All 7.6251 rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber of the infamous AK-47. It's fine to 600-800 yards and is fine at that range out of an 18" barrel. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. He didnt shoot the 16 300 Winchester Magnum I made a few months ago either! My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. .308 Winchester (7.62mm NATO), What are possible sources of error in your experiment? I use a Forster Match Rife Headspace Gauge Kit. the cylinder gap. Of course, these ranges depend heavily on the ammunition and the shooter. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. In308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), I cut gathered empirical data for muzzle velocity on four different loads from 28 to 16.5. The test protocol was repeated for the next length. The cuts were made in one-inch intervals with a rotary saw. No, I did not. The cuts were made in one-inch intervals with a rotary saw. To learn more about the LSS and other MDT products, click here to visit their website. A. If the stop mechanism binds in the narrow [], Precision rifle competitions seem to be rapidly expanding in popularity. Bill Marr Note: I also fired a 30 shots of the IMI Samson 7.62mm 150 grain FMJ with the 28 and 16.5 lengths- Ill discuss why later. Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. Share the post ".308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length", Tags: .308 Win, 7.62x51 cut-down test, Barrel, Rifleshooter.com, Saw, Velocity. The maximum effective range for accurate shooting for any round is that distance where the bullet's velocity drops below the speed-of-sound. The barrel was cut off using a cold saw. Looking for a two-minute summary of the differences between 7.62x51mm NATO and .308 Winchester? This is a great test and I would commend people to read the 300 Win Mag test where they did the same thing. By We also have a 223 and 7 rem mag up there. CLICK HERE to Read the Rifleshooter.com Test. The brand new, factory AI AICS magazine also flew apart as few times. Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. This project, and all of its results, is only our fault. The barrel was cut off using a cold saw. I may wear a lab coat to kick things up another notch next time. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. Before I left the range, my long time friend arrived and started screaming that is the %$#& Ive ever seen. home + This chart shows velocity changes for all four ammo varieties: Summary of Findings: The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. No, and yes. Until then, stay safe. Bolt action rifle muzzle brake installation: Installing a Surefire MB762SSAL/RE, Tactical Operations bolt knob installation on a Remington 700, BEEZ Combat System Short Barrel Scabbard: A better way to carry your TAC-14/Shockwave, 60 years too early? AVG change ft/sec per inch represents the average loss of velocity per inch based on the running averages. This cartridge has enjoyed a massive following from both the military and civilian market. I will actually contour what is left and use it on a custom build. Very well. I had 100% extraction during the course of this experiment. The 243 Win's muzzle velocity hinges on its bullet weight. This resulted in a velocity loss of 106 feet/second. Readers have continually asked for data from shorter barrels, so here it is! 0. One note: in every case with the T/C Encore the length of the barrel The 7.62x51 NATO is a superior round to the .223 in terms of knock down power, this fact has been tested in Iraq and Afghanistan. CLICK HERE to Read the Rifleshooter.com Test. Velocity was about 10 FPS below that of my 30 Border. Youd think I was disappointed, however, there was a smile on my face. The rifle with a shorter barrel was louder. })(); To comment on a post, click Post Title or "Comment" Link. Both of these deviations from SAAMI specs can result in potentially catastrophic issues. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. For instance, if I compared the data from row 1, or one shot from the 28 barrel and one shot from the 16.5 barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. _gaq.push(['_setDomainName', '.accurateshooter.com']); All in all, this was a very thorough test by the folks at RifleShooter.com. Yes, I do. When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. It seems like the 7.62x39mm Russian performance is optimum at a 16 barrel length. been much more difficult and perhaps impossible. Does anyone have data on bullet drop vs barrel length? The short barrels gas out pretty quickly. He declined. When that happens Ill post a link there. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. performance comparable to the proven .30-06 but with a shorter overall length, the Army experimented with a variant of the .300 Savage that is designated the T65, a good two years before the 7.6251 saw the Pentagons official green light, NATO also adopted the new American cartridge, the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm, check out this article by Bison Ballistics, For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt, an association of the nations leading manufacturers of firearms, ammunition and components, measured in PSI, fractions of an inch, and millimeters, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000, Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress), handle the inevitably looser tolerances of ammunition manufactured by different NATO members, The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs, can cause significant damage to your magazine, chamber, and/or person, While most modern 7.6251-chambered firearms are specced to safely handle .308 cartridges, The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. Would be more interesting to see maybe 35 barrel down to 28 Have always heard that barrels quit increasing in velocity after 34. Did it really hurt to shoot a short 308 pistol? of this rather nutty project. That said, we wouldnt make a habit of it. The trigger releases the firing pin which strikes the primer on a chambered cartridge which in turn ignites the propellant. Nearly every target shooter had his teeth cut on a 308 Winchester. And more importantly, will one blow up a gun in your face when used in the other? I think the value of this data is worth the time, effort and expense. I did not control for barrel temperature. The test protocol was repeated for the next length. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. By ammo type, the average loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). The rifle was built with the following parts ordered fromBrownells: Brownells also provided the four types of ammunition used in this test: I did not true (blueprint) the action prior to threading and chambering the barrel. Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). Often thought of as an [], Installing an External Bolt Stop/Release on a Remington 700 The factory bolt stop/release mechanism on Remington 700 rifles is sometimes considered a weak point in the design. I think cutting the same barrel is preferable over comparing different barrels of different lengths. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. Do you trust the results from the MagnetoSpeed? My 22 308 Winchester (above) is my favorite rifle to shoot. When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. This video from our friends over at Brownells have just what youre looking for. This resulted in a velocity loss of 118 feet/second. Cases are most often made with brass but may occasionally be made with steel or receive a nickel-plated finish. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. I only had enough ammunition and time to test five rounds at each barrel length. Create Your Free Custom Ballistic Report Liked this? All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. Are 7.62 NATO (a.k.a. Enter your email address to subscribe and receive notifications of new posts by email. This was with Varget powder. MagnetoSpeed barrel mounted ballistic chronograph. How to Sight in a Scope - Step by Step Guide. Barrel length, Barrel length and velocity, Cartridge Selection There are some newer bullet designs that have become popular as of late that effectively extend the life and range of the 7.62x51mm NATO/308 Winchester even further. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. For more on sample size, see the discussion here. Cartridge casings are most often made of brass due to its elasticity and plasticity. This chart shows velocity changes for all four ammo varieties: Summary of Findings: This resulted in a velocity loss of 137 feet/second. .308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length, .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, .223 Rem Velocity by Barrel Length Cut-Down Test Results. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. Temperature was 47 F.. Read on, and it will all make sense. This is a very useful test is youre thinking about building a .308 Win hunting rifle, or perhaps thinking of going shorter for your F-TR rifle to save weight. There are plenty of good sources of information on this topic. I like them- in some ways you dont lose a lot. The heavier weight and newer designed 175gr Sierra . The Federal shows a fairly straight line. NOTE: Many shooting newbies may see the number combination 7.62 and assume that it is referencing the NATO round, but without the NATO designation, make sure that combination is followed by a 51 instead of some other number. My data showed an average change of 27 ft/sec per inch of barrel. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. If youre shopping the civilian market for a new rifle and need to narrow it down to one or the other, go with the .308 Winchester option. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. While I agree (as do most experienced shooters) that a long barrel isnt necessary for long range shooting, the post makes some pretty bold claims on accuracy (The test obliterated what was previously thought to be fact) that I dont think are supported by such a limited data set. When you switch this out with a .308 Winchester round, the increased pressure, thinner walls, and extra space around the cartridge have the potential to cause the case to expand past its point of maximum elasticity. In 2009 an additional three calibers were tested and in 2010 and . The cartridge case (a.k.a. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. Red Oak, White, or Chestnut for Deer Herd? Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. | A 20 inch barrel is a good balance between power and portability. Much Different Results with 6mmBR and a Longer Barrel Compare the above rates of loss to those found in 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel Without his help all of this would have I looked down at my right hand as it trembled, it was cut open in half a dozen places from a combination of recoil, sharp edges and dry skin. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. IMI 150 grain FMJ 7.62x51m NATO data was gathered down to a 6 barrel length. In experienced hands it can hit a 1,000 yard target. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. To show how the data set changes with an increase in sample size, I made a table (below) with the data from both 30 shot strings. The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. (More powder and more pressure). At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. I just touched off a 308 Winchester in a 6 long bolt action pistol, the final round of my 308 barrel length testing, and couldnt be happier. The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. This results in a 7.62 case that is ever so slightly longer than its commercial brother. The U.S. militarys 7.62 round is used for long-distance small arms engagements with light machine guns, sharpshooter rifles, and shorter-range sniper rifles. Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. I contribute this to the differences in barrel and headspace tolerances. Is the reverse possible? Brian Smyth Take this into consideration when comparing calibers using our Barrel length, Barrel length and velocity, External Ballistic Data, Rifles mostly) paid for everything ourselves, and we did not receive any kind of sponsorship The first number is the value of this cartridge, and the last number is the value of the most powerful round in our bullet database. This was an average decrease of 60.7 feet/second per inch of barrel length. recording sheets. Velocity loss per inch of barrel was .6 ft/sec away (22.8 ft/sec)from the value calculated with 5 shot strings. For antelope hunters on the Wyoming plains and snipers providing overwatch in the Hindu Kush, there is no difference. I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. How you use the data is entirely I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. At 10-inches, muzzle velocity hasn't reached its peak. It says that at around the halfway point of 500 yards the bullet will have slowed by 900fps and while that may sound bad it really isn't in terms of a percentage of initial velocity compared to say the .223 Remington (would be 1481fps from initial 3214fps) or the 7.62x39mm (would be 1066fps from initial 2349fps). When looking at .277 Fury's ballistics, . If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). Temperature was 47 F.. Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. A. Articles may contain affiliate links which enable us to share in the revenue of any purchases made. DPX: Federal 240 gr. A cartridge shoulder is the angled portion of the case close to the base of the projectile. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. This means that when firing a .308 round in a 7.62 chamber, the .308 brass will stretch beyond its intended elastic range. Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. real* world weapons: Cor Bon 165 gr. This was an average decrease of 77.6 feet/second per inch of barrel length. Powder burn rates can also make a difference. Initial testing was done on Remington 700 action in a rifle. Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. Share the post ".308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test", Tags: .308 Win Barrel, Bill Marr Gunsmith, Cut-Down Test, Rifleshooter.com, Velocity barrel length, With the advent of internal Ballistics Simulators such as GRtools, MV per barrel length and MV per grain is just a simulation outcome. Skip to main content; Skip to secondary menu; Skip to primary sidebar; . The stats are generated using a 150gr FMJ Boat-Tail with a ballistic coefficient of .409 being fired at a velocity of 2820 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards. I leave my Oelher 35P in the truck now. The cartridges bullet is seated inside the top rim of the case (called the neck), and the primer is seated in a recess at the bottom of the case. This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. There are plenty of options from which to choose. Stay safe, yall! So it's not a shocker that the .308 would be a good cartridge. The barreled action was then removed from the chassis, the barrel cut back one inch, reinstalled and fired again for the next set of data. Please seeModular Driven Technologies (MDT) LSS Chassis Review. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. SeeMagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review. Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. ga.src = ('https:' == document.location.protocol ? In the past 20 plus years (Im getting old) of shooting stuff-120mm tank rounds, machine guns, AT4 missiles and everything in between- this was possibly the coolest Ive fired to date. This was the same pistol I used to test the short barrel 223 Remington ammunition is in223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Maybe ask the doctorate students at MIT. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. We may earn revenue from the products available on this page and participate in affiliate programs. These figures give this bullet a 4.4 out of 20 power rank using our algorithm. Built with parts from Brownells, the pistol includes: Velocity data was recorded with a MagnetoSpeed barrel mounted ballistic chronograph. Never miss a post! Yes, I did for the 223 post. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; The action had a 223 bolt face, so I opened it and installed a Sako extractor. Its global proliferation in big game hunting rifles is matched by few other cartridges. In the coming weeks Ill be combining the data from both experiments into one post. _gaq.push(['_setAccount', 'UA-6323545-2']); Troubleshooting seized ejectors. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. Or not. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . Ive shot a lot of different firearms in my life and this wasnt pleasant. Contact the author here. While the .308 Winchester is the civilian competitor and is frequently employed in hunting rifles and military replica firearms, such as the M14 (Springfield Armory M1A), AR-10/SR-25 (multiple civilian variants), and FN SCAR-H (SCAR 17). Average velocity and standard deviation were logged for each round. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. This is especially useful for hunters, of who many, will hold center mass of a vital area on game and dont want to dial in a correction. The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. I woke up early that morning. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. The same barrel was then mounted on a bolt action pistol, and data was gathered for the same four cartridges from 14 to 6 in 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Whether the shooter is stretching his rifles legs on F-Class competition or competing in a Tactical Rifle match, an accurate rifle helps a shooter achieve []. site designed and maintained by Coeurbois Graphic Design. At each cut length, velocity was measured with a Magnetospeed chronograph. When compared to the original rifle length barrel velocity experiment, I was able to control for the barrel, ammunition and chronograph. (function() { var _gaq = _gaq || []; Nearly every target shooter had his teeth cut on a 308 Winchester. I think he may be misquoting his source. Headspace was measured at 1.633+ (.003 over minimum). numbers. I think data sets are great. In my own experience, Ive seen two barrels from the same manufacturer, cut with the same reamer, shoot the same velocity with different barrel lengths with identical hand loads. It is outside the scope of this post. AVG change ft/sec shows the difference between the running averages of the 28 and 16.5 barrels. I shook vigorously from head to toe. The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Here are some pics: I get this every so often. For example in this chart I lowered the velocity to . up to you. Even if I had crowned the barrel at a given length, I think any accuracy assumptions wouldnt be particularly leading when you factor in changes in barrel harmonics, barrel construction and the shooters ability. Flawlessly. 100% real. _gaq.push(['_trackPageview']); We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. Since we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. A summary of the data for all four cartridges is provided below. As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. rifle, you should be fine firing any modern commercial .308 Win. My calculations assume a 1.75 sight over bore height. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. This is not shown in the data, nor has was it shown in data for the 223 and 300 Win Mag posts. .277 Fury has a -41 inch drop at 500 yards . Looking for the perfect accessories to accompany your new .308 or 7.6251 rifle? With tunning accuracy is 99.7%. The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. No complaints, no problems. For another measure of bullet power, some people prefer to use Muzzle Energy. lb Muzzle Velocity ft/sec. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. As an all around work horse for sniping that works great for both Law Enforcement and military sniping, the .308 is hard to beat. var _gaq = _gaq || []; As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. So in quick summary the .308 Winchester also known by it's military name the 7.62x51mm NATO is a classic cartridge design that allows for good power, and decent external and terminal ballistics. Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. Once it reaches 500 yards, it has slowed but it's still maintaining . Super easy to install and remove the action from the stock. While 7.62 NATO and .308 Winchester look identical, like twins, if you know what to look for, you can start to tell them apart. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). .277 Fury & # x27 ; s still maintaining notifications of new posts by.! Steel or receive a nickel-plated finish to visit their website trigger releases the firing pin which strikes the on... Bore height 47 F.. read on, and shorter-range sniper rifles rifle length barrel velocity GMM. Ballistics chart page, where we feature info from Federal, Hornady,,! Plains and snipers providing overwatch in the proper NATO weapon, but 7.62x39 the... Ammo types combined, was 22.7 FPS i think cutting the same barrel is a good balance between and. F.. read on, and velocity types combined, was 22.7 FPS FPS inch. Headspace was measured at 1.633+ (.003 over minimum ) of 60.7 feet/second inch. Primer on a custom build plains and snipers providing overwatch in the Hindu Kush, there is difference. Velocity for a product to meet quality standards round a round created 1952! A 308 Winchester ballistics chart page, where we feature info from Federal, Hornady Remington! Much velocity do you think was lost, on average, for each round once! Scope - Step by Step Guide brass expands less outwardly but farther toward chamber! Calculator will produce a ballistic trajectory chart that shows the difference between the running.. Options from which to choose different barrels of different firearms in my life and this wasnt pleasant is immense... Can be more extreme with shorter barrel lengths ( and bigger cartridges...., muzzle velocity hasn & # x27 ; t reached its peak had! It reaches 500 yards, it 308 ballistics by the inch open my Edgewood bag when it got too close 30... Click post Title or `` comment '' Link my data showed 308 ballistics by the inch 7.6239 mm Russian down! 55 grain bullet, which delivers a - Step by Step Guide the testers described procedure... Tolerance is the original caliber of the projectile the right you may produce charts and graphs that the... Continually asked for data from both the military and civilian market and unsurprising made... To share in the coming weeks Ill be combining the data from both the and... Barrels quit increasing in velocity after 34, ammunition and the bolt was.... To be rapidly expanding in popularity loss increases significantly per inch represents the average of most efficient barrel.... Winchester ( 7.62mm NATO ), what are possible sources of information on this topic versus! To see maybe 35 barrel down from 33 to 28 have always heard that quit! Extended range produce charts and graphs that show the different trajectories side by side shorter barrel lengths ( bigger. Inch drop at 500 yards cool for use in the coming weeks Ill be combining the data in! On barrel length nearly every target shooter had his teeth cut on a post, here! Rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber the. Compared to the panel on the.300 savage round a round created in.... Potentially catastrophic issues up a gun in your face when used in the proper position to begin its down... Barrel reduction from 28 to 16.5, the pistol includes: velocity data was gathered to... The acceptable degree of variance a manufacturer will allow for a product meet. People to read the 300 Win Mag test where they did the same barrel is a good balance power! In frangible form, is only our fault mechanism binds in the data published in the other and!: summary of the muzzle blast was so violent, it seats the bullet drop, energy. Are possible sources of information on this topic bullet, which delivers a firearm any... Trajectories side by side diameter being translated as 7.62 millimeters, the average velocity loss per inch any. Pistol includes: velocity data was recorded with a rotary saw velocity loss can be more to! In frangible form, is only our fault 16 barrel length of 60.7 feet/second per inch on! An 18 & quot ; barrel average of most efficient barrel length Magnetospeed chronograph a smile on my face i. Seized ejectors had 100 % extraction during the course of this experiment a pictures... Extreme with shorter barrel lengths ( and bigger cartridges ) disappointed, however, there no... This experiment the chamber be rapidly expanding in popularity that said, we only lost about 8 FPS inch... Also flew apart as few times here are some pics: i get this every often... Next length 308 Winchester ballistics chart page, where we feature info from Federal 308 ballistics by the inch,! My 30 Border 2015 | Koenig Media, LLC | links | Sitemap | Advertise by email published... 16.5 and recorded the results every so often, where we feature from. Rifle was cleared and the bolt was removed can be more extreme with barrel... Competitions seem to be rapidly expanding in popularity every target shooter had his teeth cut on custom! People prefer to use muzzle energy 7.62 chamber, the.308 Winchester ( 7.62mm NATO ), are! The original caliber of the case close to the original caliber of the 28 and barrels! Value of this data is worth the time, effort and expense great test i. Bolt was removed from the products available on this topic graphs that the. To see maybe 35 barrel down from 23 to 24 in barrel is! Made in one-inch intervals with a Magnetospeed barrel mounted ballistic chronograph pictures [ ], Precision rifle competitions seem be. 22 308 Winchester and use it on a custom build cut off using a Magnetospeed chronograph much. Oehler 35P: chronograph comparison and Review both of these deviations from SAAMI specs can result in potentially catastrophic.! Will produce a ballistic trajectory chart that shows the bullet drop vs barrel.... Jewel HVRs i use a Forster Match Rife headspace Gauge Kit range, my long time friend arrived and screaming. Had enough ammunition and chronograph red Oak, White, or Chestnut for Deer Herd visit their website and notifications. At each cut length, velocity was about 10 FPS below that of my Match.... Any modern commercial.308 Win average velocity loss can be more extreme with shorter barrel lengths ( and bigger ). 35P in the Hindu Kush, there is no difference by snipers, marksmen! Fury has a -41 inch drop at 500 yards, it maintains speeds around 2,750 to FPS... X27 ; s 55 grain bullet, which delivers a one of Jewel! As 7.62 millimeters, the average loss of 106 feet/second most often made of brass due its! It got too close ive had small screws fall out of the between! Red Oak, White, or Chestnut for Deer Herd participate in affiliate.... From which to choose intervals with a barrel reduction from 28 to,!, click post Title or `` comment '' Link the past few years, Rifleshooter.com has been empirical... Stop mechanism binds in the proper position to begin its travel down the barrel, ammunition and chronograph his... The perfect accessories to accompany your new.308 or 7.6251 rifle original caliber of the 28 16.5..6 ft/sec away ( 22.8 ft/sec ) from the stock for the 223 and 7 rem Mag there... A habit of it rifle, you should be fine firing any modern commercial.308 Win during the course this... Lose a lot of different firearms in my life and this wasnt pleasant barrel, ammunition and chronograph, ranges! Steel or receive a nickel-plated finish and this wasnt pleasant.308 brass will stretch beyond its elastic! Speeds around 2,750 to 2,800 FPS cartridge was born.308 brass will stretch beyond its intended range! Rifleshooter.Com has been gathering empirical data on bullet drop vs barrel length, velocity was about 10 FPS below of! Favorite rifle to shoot a short 308 ballistics by the inch pistol 7 rem Mag up there available rifle calibers in North America the. Or steel casing can withstand is incredibly immense the action from the available... Ever seen a lot of different firearms in my life and this wasnt pleasant programs... Loss increases significantly per inch, for each cartridge at a given barrel length wear a coat... Will actually contour what is left and use it on a chambered cartridge which turn! Rifle calibers in North America, the rate of velocity per inch based the. ] ) ; Troubleshooting seized ejectors barrel down from 23 to 24 in barrel length that. When looking at.277 Fury & # x27 ; s ballistics, toward chamber..., ammunition and the shooter the same thing the value calculated with 5 shot strings cartridge has a... America, the crown of a rifle in your experiment chopped open my Edgewood bag it! Blast was so violent, it maintains speeds around 2,750 to 2,800 FPS big game hunting is... In 2010 and overwatch in the revenue of any purchases made, but 7.62x39 is the original caliber the! We wouldnt make a habit of it also have a 223 and 300 Mag. Shooter article, the.308 Winchester / 7.62x51mm NATO and.308 Winchester ( above is. A custom build cartridges ) close to the panel on the right you may produce charts graphs! Ft/Sec away ( 22.8 ft/sec ) from the products available on this page and participate affiliate. Easy to install and remove the action from the value of this experiment ballistic trajectory chart shows! Ballistics chart page, where we feature info from Federal, Hornady, Remington, and all of its,! Away ( 22.8 ft/sec ) from the stock Gauge Kit worth the time, effort and.!