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Hunting
Long Range Hunting & Shooting
280 Ackley Improved
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<blockquote data-quote="RockyMtnMT" data-source="post: 1492596" data-attributes="member: 7999"><p>As far as barrel length in the 280ai, I am not sure that it is necessary to use a 26" barrel to get the potential out of a 7mm cartridge that is using 60g of powder give or take. I figure my 22" barrel may give up 50fps to a 26". Could be more with big 200g class bullets but the case really it's not big enough to get a usable advantage from such a big bullet. Running the 280ai at 3200fps with a 140g class of bullet, like our 143g Hammer Hunter, makes the cartridge tough to beat out to 800y when you consider trajectory and impact vel and doing it on a standard long action. Starting a bullet for hunting big game at 2600fps makes little sense to me. My .02</p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1492596, member: 7999"] As far as barrel length in the 280ai, I am not sure that it is necessary to use a 26" barrel to get the potential out of a 7mm cartridge that is using 60g of powder give or take. I figure my 22" barrel may give up 50fps to a 26". Could be more with big 200g class bullets but the case really it's not big enough to get a usable advantage from such a big bullet. Running the 280ai at 3200fps with a 140g class of bullet, like our 143g Hammer Hunter, makes the cartridge tough to beat out to 800y when you consider trajectory and impact vel and doing it on a standard long action. Starting a bullet for hunting big game at 2600fps makes little sense to me. My .02 Steve [/QUOTE]
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