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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm/08 AI velocity confirmation
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<blockquote data-quote="J E Custom" data-source="post: 1758806" data-attributes="member: 2736"><p>3000 ft/sec with a 140 grain bullet is very possible in a 7/08 AI. 150 to 200 ft/sec gain is normal and possible if the proper powder is used.</p><p></p><p>Varget seams to be the fastest powder in the 7/08 and the most accurate I have found was with H414 but it gives up about 100 to 150 ft/sec in a standard 7/08.</p><p>My most accurate load is 49.5 grains of H 414 .054 5 shots @ 100 yards with a 120 grain ballistic tip at 3010 ft/sec the Varget load ups the velocity to 3133 ft/sec with a group size of .071. My 7/08 AI ups all of these loads by 150 to 200 ft/sec depending on the bullet used and allows the 140 to meet or exceed 120 grain velocities without pressure. </p><p></p><p>Unlike the 7/08, The 20 " barrel will be marginal for the AI to exceed 3000 with a 140 but add 2" to 22" and it will work. My 7/08 AI has a 23" barrel and it doesn't have any problems reaching 3000 ft/sec with a 140 ((The reason I added 2+inches to the AI). The AI can utilize a longer barrel and can use anything from 22' to 26' and beyond to get the maximum velocity with the added powder charge.</p><p></p><p>The AI version of the 7/08 not only adds powder capacity, it adds efficiency to the powder burn and this is where/why it can boost the velocity as much as it does.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1758806, member: 2736"] 3000 ft/sec with a 140 grain bullet is very possible in a 7/08 AI. 150 to 200 ft/sec gain is normal and possible if the proper powder is used. Varget seams to be the fastest powder in the 7/08 and the most accurate I have found was with H414 but it gives up about 100 to 150 ft/sec in a standard 7/08. My most accurate load is 49.5 grains of H 414 .054 5 shots @ 100 yards with a 120 grain ballistic tip at 3010 ft/sec the Varget load ups the velocity to 3133 ft/sec with a group size of .071. My 7/08 AI ups all of these loads by 150 to 200 ft/sec depending on the bullet used and allows the 140 to meet or exceed 120 grain velocities without pressure. Unlike the 7/08, The 20 " barrel will be marginal for the AI to exceed 3000 with a 140 but add 2" to 22" and it will work. My 7/08 AI has a 23" barrel and it doesn't have any problems reaching 3000 ft/sec with a 140 ((The reason I added 2+inches to the AI). The AI can utilize a longer barrel and can use anything from 22' to 26' and beyond to get the maximum velocity with the added powder charge. The AI version of the 7/08 not only adds powder capacity, it adds efficiency to the powder burn and this is where/why it can boost the velocity as much as it does. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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7mm/08 AI velocity confirmation
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