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Rifles, Reloading, Optics, Equipment
Reloading
.264 once fired brass question
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<blockquote data-quote="Bart B" data-source="post: 1153871" data-attributes="member: 5302"><p>My .264 Win Mag shot most accurate with new cases of full length sized ones. Both case types shot Norma 140's with 72 grains of H870 and WLR primers into 4 to 5 inch 10-shot test groups at 600 yards. Bullets were seated a few thousandths short of rifling contact.</p><p></p><p>Better accuracy with 30-338 cases with IMR4350 and 190 and 200 grain Sierra pills. No neck sized cases; new and full length sized ones only. </p><p></p><p>Sierra Bullets convinced me to stop full length sizing belted cases. And with belted cases, new or full length sized ones produced best accuracy if a second body die sized the fired case body all the way back to the belt.</p><p></p><p>Shot them all in temperatures from 30's to 90's F. No significant accuracy problems. That said, if your bullets are shot barely fast enough to stabilize and shoot accurate in warm weather with the rifling twist used,</p><p>a few tenths grain more powder often helps in cold weather. Some benchresters add 2/10 grain or so their charge for every ten degrees less than the temperature at load development; subtract that much for higher temperatures.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1153871, member: 5302"] My .264 Win Mag shot most accurate with new cases of full length sized ones. Both case types shot Norma 140's with 72 grains of H870 and WLR primers into 4 to 5 inch 10-shot test groups at 600 yards. Bullets were seated a few thousandths short of rifling contact. Better accuracy with 30-338 cases with IMR4350 and 190 and 200 grain Sierra pills. No neck sized cases; new and full length sized ones only. Sierra Bullets convinced me to stop full length sizing belted cases. And with belted cases, new or full length sized ones produced best accuracy if a second body die sized the fired case body all the way back to the belt. Shot them all in temperatures from 30's to 90's F. No significant accuracy problems. That said, if your bullets are shot barely fast enough to stabilize and shoot accurate in warm weather with the rifling twist used, a few tenths grain more powder often helps in cold weather. Some benchresters add 2/10 grain or so their charge for every ten degrees less than the temperature at load development; subtract that much for higher temperatures. [/QUOTE]
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Reloading
.264 once fired brass question
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