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Rifles, Reloading, Optics, Equipment
Reloading
group size when fire forming brass
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<blockquote data-quote="Shufisher" data-source="post: 114487" data-attributes="member: 2806"><p>What should expectations be for groups shot while fire forming brass; 257 Roberts to AI? I used 87 gr. Speer bullets seated to touch the rifling pushed by 37.5 grains of IMR 4895 straight from the hopper, weighing powder every 5th round. This load produced a 10 shot group of just over an inch at 100 yds. The barrel was scrubbed after the first 5. </p><p></p><p>The rifle is built on a virgin Sako Forester L579 with a Montan Rifleman stainless 26" heavy barrel (1/10 twist).</p><p></p><p>I hope my expectations arn't too high, but I am really looking forward to working up loads with a heavier bullet in my newly formed brass. I'll post the results once that operation is complete.</p><p></p><p>Thanks,</p><p></p><p>Jim</p></blockquote><p></p>
[QUOTE="Shufisher, post: 114487, member: 2806"] What should expectations be for groups shot while fire forming brass; 257 Roberts to AI? I used 87 gr. Speer bullets seated to touch the rifling pushed by 37.5 grains of IMR 4895 straight from the hopper, weighing powder every 5th round. This load produced a 10 shot group of just over an inch at 100 yds. The barrel was scrubbed after the first 5. The rifle is built on a virgin Sako Forester L579 with a Montan Rifleman stainless 26" heavy barrel (1/10 twist). I hope my expectations arn't too high, but I am really looking forward to working up loads with a heavier bullet in my newly formed brass. I'll post the results once that operation is complete. Thanks, Jim [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
group size when fire forming brass
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