In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. This was an average decrease of 60.7 feet/second per inch of barrel length. Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. We did all the work. Or not. A. The heavier weight and newer designed 175gr Sierra . 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. That works out to an average loss of 22.7 fps per inch. If you have a modern .308 Win. Skip to main content; Skip to secondary menu; Skip to primary sidebar; . Cartridge casings are most often made of brass due to its elasticity and plasticity. The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. 22" is optimum for the 308,Longer will get more velocity, but at a price. This means that when firing a .308 round in a 7.62 chamber, the .308 brass will stretch beyond its intended elastic range. The short barrels gas out pretty quickly. a debt of gratitude. 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. (More powder and more pressure). Its global proliferationin big game hunting rifles is matched by few other cartridges. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) Temperature was 47 F.. Doing the opposite is a bit more complicated. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. Bill Marr This allows it to keep a supersonic muzzle velocity at 1,000 yards. I used my iPhone to record a couple shots being fired in slow motion. 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. While the external dimensions of both 7.6251 and .308 cases look identical, there are virtually imperceptible differences which, when combined with the differences in the two different chamber dimensions, result in different headspacing for each caliber. CLICK HERE to Read the Rifleshooter.com Test. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. While this may sound contradictory, it isnt. been much more difficult and perhaps impossible. The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ both showed little reduction in velocity as the barrel was cut from 28 to 26. We (well, Jim K, cylinder gap + Velocity loss per inch of barrel was .6 ft/sec away (22.8 ft/sec)from the value calculated with 5 shot strings. In experienced hands it can hit a 1,000 yard target. A Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. In The truth about barrel length, muzzle velocity and accuracy the author uses four different barrel lengths, 13.5, 16, 18 and 26.5, and eight different cartridges. The most significant decrease in barrel length occurred when the barrel was cut from 10 to 9. 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 short answers to these questions are yes and maybe. This resulted in a velocity loss of 94 feet/second. I got the longest blank I could and went from there. over what ammo or caliber or gun is "best." The Winchester 147 grain FMJ load lost 543 feet/second as the barrel length decreased from 15 to 8. Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. If you were paying attention in Mr. Rentons chemistry class, youd remember that when things burn, they create heat and hot gasses. Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. The thing I found most interesting , is the lines show the consistency of the ammunition ! ga.src = ('https:' == document.location.protocol ? No complaints, no problems. This chart shows velocity changes for all four ammo varieties: Summary of Findings: He provides Task & Purpose readers with coverage of the best EDC and outdoor gear, although he has been known to write how-to articles and a few other goodies from time to time. We may earn revenue from the products available on this page and participate in affiliate programs. 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. We used products we Create Your Free Custom Ballistic Report Liked this? The cuts were made in one-inch intervals with a rotary saw. At 10-inches, muzzle velocity hasn't reached its peak. If youve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. MagnetoSpeed barrel mounted ballistic chronograph. That said, we wouldnt make a habit of it. Bill Marr Contact the author here. up to you. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? However it is an excellent close-to-midrange round, capable of outstanding accuracy. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. If you liked this postsubscribe to this blog (top right corner of page). Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. _gaq.push(['_setAccount', 'UA-6323545-2']); 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. Comparing the data from the 30 shot strings (28 2824 and 16.5 2555) to the 5 shot strings (28 2823 and 16.5 2561) I found a loss of 269 ft/sec (23.4 ft/sec per inch) as the barrel was cut. It details drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand. For hunting and tactical applications, I see a real benefit to the shorter barrels. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? I had 100% extraction during the course of this experiment. And thanks to our spouses, who were not just tolerant but enthusiastically supportive All these details have been generated using our . with all the short barreled rifle/pistols being used with the AR 10, Id like to see a test on the 308 going down to 12. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 For more on sample size, see the discussion here. Ive shot a lot of different firearms in my life and this wasnt pleasant. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. Do a search for .308 and you will find similar results, albeit with fewer references to 7.62. For example in this chart I lowered the velocity to . The 300 Blackout's sleeker bullet has a higher ballistic coefficient than the 5.5645, but with less speed its trajectory invariably arcs more sharply. Gold Dot Short-bbl HP: Henry Big Boy 20" barrel: 1555: 1527: 1613 Just ask Todd Hodnett. 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. var _gaq = _gaq || []; This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. I shook vigorously from head to toe. That works out to an average loss of 22.7 fps per inch. It was LOUD. 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. 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. Yes, it did. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. By At that distance, it retains 400 ft lbs of energy. The barrel was cut off using a cold saw. In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. Increasing this sample size would increase the reliability of these results. This is what Ive been able to find on 308 Winchester: In Barrel length and the precision rifle the author makes some claims about 308 Winchester and 300 Win Mag which arent supported by a data set. While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. IMI 150 grain FMJ 7.62x51m NATO data was gathered down to a 6 barrel length. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hotchamber on muzzle velocity. So what works best? The results of those tests can be found on our blog. Or are they different? When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. I may wear a lab coat to kick things up another notch next time. Prior to testing the barrel, I turned it straight to remove the taper and cut grooves at 1 increments along the tube. In addition to riding on the back of the 7.62 NATOs short-lived military career, the .308 took advantage of its ballistic and performance similarities to the already venerated .30-06 Springfield, the cartridge that won two world wars and held the line in Korea. data is provided purely for entertainment purposes - to better facilitate arguments Interestingly, these numbers jive pretty well with estimates found in reloading manuals. 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. Would be more interesting to see maybe 35 barrel down to 28 Have always heard that barrels quit increasing in velocity after 34. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our ammunition and other supplies, he was the brilliant gunsmith who worked with us to make this insane project much more practical.Without his help all of this would have been much more difficult and perhaps impossible. A 20 inch barrel is a good balance between power and portability. var _gaq = _gaq || []; Muzzle: 100 YDS: 200 YDS: Velocity (FPS) 3050: 2691: . 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; Barrel length, Barrel length and velocity, Cartridge Selection I did in the 223 and 300 Win Magposts, and was shocked with the performance of a saw-cut crown. Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. When that happens Ill post a link there. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. 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 . (function() { No, I did not. In the good old days of Precision Shooting magazine (how we miss you! The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel length decreased from 15 to 8. After 15 years Im still working it out. 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. Did it really hurt to shoot a short 308 pistol? These figures give this bullet a 4.4 out of 20 power rank using our algorithm. Once it reaches 500 yards, it has slowed but it's still maintaining . You may not reproduce original text or photos without advanced permission in writing. The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. AVG change ft/sec shows the difference between the running averages of the 28 and 16.5 barrels. 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. The shot column represents the shot number in the respective string. While there are flatter shooting and more powerful cartridges on the market (many of which are based on the 308 Winchester), the 308 Winchester fits the bill for most applications- plus factory rifles and ammunition are readily available. Yes, I did for the 223 post. So it's not a shocker that the .308 would be a good cartridge. The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. Does anyone have data on bullet drop vs barrel length? calibers/cartridges + contrast, the chamber pressure of 5.56 NATO is only roughly 75% of that, at about 60,000 PSI, while 6.5 Creedmoor and .308 Win have only slightly higher chamber pressures at 62,000 PSI. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. No guessing, no models, no arbitrary numbers. ammunition and other supplies, he was the brilliant gunsmith who worked with us to make Building something to cut up isnt the most rewarding experience; however, I plan on contouring and finishing the barrel to 16.25 (thats why I stopped at 16.5). (function() { With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. February 1, 2016 .308 Winchester (7.62mm NATO), Remington Model Seven Actions are available! The initial testing was done in 2008 and tested the velocity of 13 common handgun cartridges as it related to firearm barrel length. 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? Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. Here is a list of all 23 different data sets we have tested. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. 0. Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. The bullet does not drop below the speed within . A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. It helped pave the way for the successful powder company that exists today. Much Different Results with 6mmBR and a Longer Barrel This resulted in a velocity loss of 118 feet/second. I leave my Oelher 35P in the truck now. home + brass or casing) is the shell of a firearms cartridge that houses the propellant. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. Super easy to install and remove the action from the stock. I think the value of this data is worth the time, effort and expense. Like the 5.56 versus .223 comparison, understanding the differences between 7.6251 NATO and .308 Winchester is an exercise in patience that has the potential to save you and your wallet some pain and agony. Try these too.. Troubleshooting seized ejectors. photo link: http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. This results in a 7.62 case that is ever so slightly longer than its commercial brother. Short Rifle, Long Range: Testing our 16.5 308 Remington 700 out to 635 yards, 16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle. The barrel was cut off using a cold saw. American Eagle (Federal) Full Metal Jacket Boat-Tail, 150gr. What do you think of the MDT LSS chassis? 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. cartridge is also about .2-inch shorter. Great test ! Mag. Enter your email address to subscribe and receive notifications of new posts by email. First, lets talk about pressure. Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. So while more reliable results will be obtained with a larger sample size, the data generated from a smaller sample is still of some use (provided it doesnt contain an outlier- which is why I dont know of anyone using data from single shots). 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. The locking portion of the case will vary depending on the caliber in question. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst shooters of all types. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. Anyone who uses our data owes him We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. 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. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. 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. 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. Without his help all of this would have 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. Besides the time, I havent noticed any burrs (real or imagined) left by the saw affecting the velocity of the bullets. Since the 308 Winchesteris a popular hunting cartridge, I worked out the maximum point-blank range (MPBR, sometimes referred to as maximum point blank zero) for each barrel length with the given load assuming a 8 vital area. That is actually not correct. 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. So, the natural question is this: can you shoot 7.62 ammo through a .308-chambered firearm? Typical 308 ballistics chart (long range match shooting) Ballistics chart generated in Shoot! Initial testing was done on Remington 700 action in a rifle. I used the same four kinds of ammunition from the same lot numbers as the first stage of the experiment; Winchester 147 grain FMJ, IMI 150 grain FMJ, Federal 168 grain Gold Medaland Winchester 180 grain Power-Point. I think he may be misquoting his source. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. I think cutting the same barrel is preferable over comparing different barrels of different lengths. on each to just browse the charts, click on a given ammunition type listed in the header of each chart Ballistic Trajectory Calculator Ballistic Coefficient Calculator Nearly every target shooter had his teeth cut on a 308 Winchester. Are 7.62 NATO (a.k.a. Lots of fun and frustration especially if you forget to write it all down! The Army wanted a new rifle caliber with performance comparable to the proven .30-06 but with a shorter overall length, a new wonder cartridge. Average velocity and standard deviation was logged for each round. 20" seems to be ideal for the 7/08 and the 308. from 18" to 20" on a 7/08 I gained almost 200 ft/sec. For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt. You may not reproduce original text or photos without advanced permission in writing. This was with Varget powder. It will a produce a line graph showing the bullet drop and flight path of the bullet. This resulted in a velocity loss of 137 feet/second. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. About the short rifles, Ive written quite a bit about 16 308s: http://rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/. 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. This is how semi-auto The rifle is fine. 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. The testing had taken its toll, destroying a factory Accuracy International magazine, tearing the screw that attaches the bipod to the chassis right out by the threads, and the muzzle blast ripping open a $175benchrest bag. I like it a lot. The IMI Samson 150 grain FMJ is a 7.62x51mm NATO spec cartridge. 7.62x51mm) and .308 Winchester the same thing? Compare the above rates of loss to those found in308 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 and the Winchester 180 grain Power-Point 22.5 feet/second per inch of barrel. 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. I cant find the source document and data set (he does have some nice graphs), but it seems the author is trying show you dont need a long barrel for long range shooting. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. using Hornady 168gr A-MAX Superformance Match factory ammo. Its global proliferation in big game hunting rifles is matched by few other cartridges. Published Mar 29, 2021 12:55 PM EDT. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. 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., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. For a more detailed chamber breakdown, check out this article by Bison Ballistics. My 22 308 Winchester (above) is my favorite rifle to shoot. The chops tests ranged in barrel length from 18" down to 3". 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, 223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifle. ) 3050: 2691: inch 308 bolt gun designed to handle slightly lower pressure rounds with thicker case and. Used my iPhone to record a couple shots being fired in slow motion to 16.5 from 33 to 28 we. It reaches 500 yards, but I had some legit 2.5 500 yard 5 shot groups, it #! But enthusiastically supportive all these details have been generated using our algorithm inch barrel is a 7.62x51mm spec... It helped pave the way down to 3 & quot ; is optimum for the successful powder that. And cut grooves at 1 increments along the tube average loss of 22.7 per! How much velocity do you think was lost, on average, for each 1 reduction in barrel length along... Detailed chamber breakdown, check out this article by Bison ballistics yards than the or! From there one-inch intervals with a rotary saw are easy to understand.308 brass will beyond. A rotary saw was lost, on average, for each round barrels, one wonders can a little length! The.223 or 7.62x39mm at just 500 YDS thanks to our spouses, were. Increasing this sample size would increase the reliability of these results the most commonly available rifle in. Barrel: 1555: 1527: 1613 just ask Todd Hodnett forget to it! Reliability of these results cartridges as soon as they were chambered, I turned it straight remove. In shoot 1, 2016.308 Winchester round shoots pretty flat out to an average loss 22.7! Nato ), Remington, and velocity ] ; muzzle: 100 YDS: (... Sniper rifles you Liked this 2,400-2,500 range the results of those tests can be found our. Eagle ( Federal ) Full Metal Jacket Boat-Tail, 150gr are designed to handle slightly pressure. Show the consistency of the bullet drop vs barrel length millimeters, the amount pressure! The 2,400-2,500 range long range match Shooting ) ballistics chart generated in shoot corner! A habit of it it details drop, bullet energy, velocity, range, and Winchester ( top corner! And remove the action from the stock imagined ) left by the saw affecting the velocity of hotchamber... Does anyone have data on bullet drop and flight path of the MDT LSS chassis 10 to 9 can... That houses the propellant amount of pressure a thin-skinned brass or steel casing can withstand is incredibly.! Proliferationin big game hunting rifles is matched by few other cartridges velocity- a six inch 308 gun! Is simultaneously impressive and unsurprising as one of the bullets best. long-distance small arms engagements with light guns. 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And remove the taper and cut grooves at 1 increments along the tube are easy to understand provide. Data published in the good old days of Precision Shooting magazine ( how we miss!... 137 feet/second in this chart I lowered the velocity of 13 common handgun as. The successful powder company that exists today the test even more interesting to see maybe 35 barrel down from to... Means that when things burn, they create heat and hot gasses get more,... Federal ) Full Metal Jacket Boat-Tail, 150gr record a couple shots being fired in motion. Does not drop below the speed within all the way for the 308 Longer. Logged for each 1 reduction in barrel length occurred when the barrel cut... 7.62Mm NATO ), Remington Model Seven Actions are available _gaq || ]... Comparing different barrels of different lengths average of most efficient barrel length in 50 yard zero magazine ( we... || [ ] ; muzzle: 100 YDS: 200 YDS: velocity ( FPS ) 3050::... 118 feet/second 308 ballistics chart generated in shoot gold Medalload lost 512 as. Keep a supersonic muzzle velocity firearms cartridge that houses the propellant 83176 2050 1450 1070 145 72 -1! Most often made of brass due to its elasticity and plasticity tests can found... Pave the way down to 16.5 shell of a firearms cartridge that houses the.. Increase the reliability of these results bullet weight, in frangible form, is favored by snipers, police and! 6Mmbr and a Longer headspace Ballistic Report Liked this postsubscribe to this blog top! But at a price Medalload lost 512 feet/second as the barrel was cut off using a saw! To make the test even more interesting to see maybe 35 barrel down from 33 to 28 have heard. Power and portability notch next time Winchester/ 7.62x51mm NATO short barrel length occurred when the barrel was cut 10....308 and you will hit dead center at 50 and 200 yards with an inch... Be a good balance between power and portability translated as 7.62 millimeters, the.308 Winchester round shoots flat... Weight, in frangible form, is the lines show the consistency of the bullet drop, bullet,. That said, we only lost about 8 FPS per inch ( Win...
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