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Rifles, Reloading, Optics, Equipment
Reloading
Cooper arms 280 ackley velocity
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<blockquote data-quote="TOM H" data-source="post: 583532" data-attributes="member: 306"><p>I would chronograph the load again also the test barrel is a Wiseman 1/19 twist 26" long. We have one 280AI with 25" long Kreiger barrel using Nolser load for the 150gr with H-4831sc we get little better than max published velocity (3000fps) at 1gr under max.</p><p></p><p>I had a factory Rem 280 with 24" long barrel I was going to use that action as donor for another 280AI want to have build. Alliant site has some loads for the 280 max 53gr/R-17 with 145 Speer @ 2968fps. I started at 50gr with 145gr Speer @ 2656fps max of 53gr @ 2904fps.</p><p></p><p>You could have problems with the chronograph if you have another rifle that you shot over it before use that to check it with. If that check you might want to call Cooper see what they say before spend lot on more powder etc.</p><p></p><p>Wish I could help more</p></blockquote><p></p>
[QUOTE="TOM H, post: 583532, member: 306"] I would chronograph the load again also the test barrel is a Wiseman 1/19 twist 26" long. We have one 280AI with 25" long Kreiger barrel using Nolser load for the 150gr with H-4831sc we get little better than max published velocity (3000fps) at 1gr under max. I had a factory Rem 280 with 24" long barrel I was going to use that action as donor for another 280AI want to have build. Alliant site has some loads for the 280 max 53gr/R-17 with 145 Speer @ 2968fps. I started at 50gr with 145gr Speer @ 2656fps max of 53gr @ 2904fps. You could have problems with the chronograph if you have another rifle that you shot over it before use that to check it with. If that check you might want to call Cooper see what they say before spend lot on more powder etc. Wish I could help more [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Cooper arms 280 ackley velocity
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