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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Most efficient .22 center fire
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<blockquote data-quote="Wallie" data-source="post: 2979135" data-attributes="member: 107256"><p>Now I'm curious as well! </p><p>I've only had it happen that one session, when I was initially testing CFE223 in my 223AI (multiple rifles, but all built the same) 8 twist 6 groove benchmark button barrel. I had tested at the same time (same batch of bullets, probably) in my 220 swift that is a 12 twist, and got up to… memory is failing me… 4100fps? Over 4000 for sure and no puffs from it. </p><p></p><p>My best guess is that with CFE I was compressing the powder hard enough to cram enough grains in the little 223AI case to get 3700fps that I was ringing the nose of vmax with my seating die. I don't know for sure, but I don't think that could help their structural integrity. </p><p>I would never have adopted that for my "normal" but I absolutely would have tried it for a group or two, if for no other reason to establish if pressure threshold was "just around the corner" from where I might want to end up.</p></blockquote><p></p>
[QUOTE="Wallie, post: 2979135, member: 107256"] Now I’m curious as well! I’ve only had it happen that one session, when I was initially testing CFE223 in my 223AI (multiple rifles, but all built the same) 8 twist 6 groove benchmark button barrel. I had tested at the same time (same batch of bullets, probably) in my 220 swift that is a 12 twist, and got up to… memory is failing me… 4100fps? Over 4000 for sure and no puffs from it. My best guess is that with CFE I was compressing the powder hard enough to cram enough grains in the little 223AI case to get 3700fps that I was ringing the nose of vmax with my seating die. I don’t know for sure, but I don’t think that could help their structural integrity. I would never have adopted that for my “normal” but I absolutely would have tried it for a group or two, if for no other reason to establish if pressure threshold was “just around the corner” from where I might want to end up. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Most efficient .22 center fire
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