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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel Life - key factors?
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<blockquote data-quote="J E Custom" data-source="post: 570741" data-attributes="member: 2736"><p>Barrel life is based on many things so I take a stab at some well known things that should help.</p><p></p><p>The quality of the barrel material, barrel quality, type of powder, volume of powder,chamber </p><p>Pressure, Velocity, efficiency of cartrige, barrel temperature, Etc.</p><p></p><p>Cartridges with high pressure, high velocity and that are over bore tend to shorten barrel life.</p><p></p><p>Anything over 3000 ft/sec starts to shorten life the faster you go.</p><p></p><p>308s are a good example of good barrel life , small powder charge (Most of the powder is </p><p>consumed in the case) velocity between 2500 and 2800ft/sec with most loads.</p><p></p><p>7mm with very large cases (264 Win Mag ,7 Rem Mag, 7 STW, 7 Wea Mag, 7 Rum are some</p><p>examples of barrel burners, Of course there are others, these are some of the more notorious</p><p>ones.</p><p></p><p>"BUT" with care and good maintenance they can last a lifetime of hunting without any accuracy</p><p> loss.</p><p></p><p>The worst case I ever saw was a 7 STW loaded very hard (Almost 3800 ft/sec with a 31" barrel</p><p>lasted between 1100 and 1200 rounds before accuracy fell off.</p><p></p><p>The best I have personally seen is /was a 308 target with a 28" hart barrel that will still shoot</p><p>sub 1/2 MOA (With Iron Sights) that has in excess of 23,000 rounds down the tube.(It was used </p><p>in competition for 17 years By 4 different shooters.</p><p></p><p>If your talking about a hunting rifle , Don't worry about barrel life. If it is a match rifle </p><p>considerations should be though of based on estimated rounds to be fired through it in</p><p>one year. </p><p></p><p>In most cases barrel life is way overrated and should not be a consideration. </p><p></p><p>Build what you want.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 570741, member: 2736"] Barrel life is based on many things so I take a stab at some well known things that should help. The quality of the barrel material, barrel quality, type of powder, volume of powder,chamber Pressure, Velocity, efficiency of cartrige, barrel temperature, Etc. Cartridges with high pressure, high velocity and that are over bore tend to shorten barrel life. Anything over 3000 ft/sec starts to shorten life the faster you go. 308s are a good example of good barrel life , small powder charge (Most of the powder is consumed in the case) velocity between 2500 and 2800ft/sec with most loads. 7mm with very large cases (264 Win Mag ,7 Rem Mag, 7 STW, 7 Wea Mag, 7 Rum are some examples of barrel burners, Of course there are others, these are some of the more notorious ones. "BUT" with care and good maintenance they can last a lifetime of hunting without any accuracy loss. The worst case I ever saw was a 7 STW loaded very hard (Almost 3800 ft/sec with a 31" barrel lasted between 1100 and 1200 rounds before accuracy fell off. The best I have personally seen is /was a 308 target with a 28" hart barrel that will still shoot sub 1/2 MOA (With Iron Sights) that has in excess of 23,000 rounds down the tube.(It was used in competition for 17 years By 4 different shooters. If your talking about a hunting rifle , Don't worry about barrel life. If it is a match rifle considerations should be though of based on estimated rounds to be fired through it in one year. In most cases barrel life is way overrated and should not be a consideration. Build what you want. J E CUSTOM [/QUOTE]
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Barrel Life - key factors?
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