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Rifles, Reloading, Optics, Equipment
Reloading
Question about Fire Forming 257 bobs into 257 AI
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<blockquote data-quote="Bret GRAVELINE Graveline" data-source="post: 2216061" data-attributes="member: 108926"><p>A quick and easy way to check if your rifle is headspace properly is take a Virgin round or case and place a single layer of masking tape on the case head, trim the excess with a sharp knife, the bolt should not close on the case without meeting resistance, if the bolt closes freely that's diffently the problem, I've been shooting and hunting with the 257 Ackley since the late 70's I have 3 with 1 being on its third barrel, my dad and brother plus a couple hunting partners use this round as well, I have chambered and fired nearly everything Ackley from the 17 hornet to a Ackley improved 338 lapua, I have improved thousands of rounds, I have tried all the recommended ways to do so, hydraulic forming to cow, what worked the best for me is a full case of slow burning powder, I like AA 8700 for this, years ago AA had a surplus powder called 8600 it was even slower than 8700 which itself is quite slow, I purchased 32 pounds of the stuff just for fire forming I'm down to about 2 pounds now, in trying faster burning powders to form cases I found even though it produces higher pressure the cases were not always perfect, A full case of the slow stuff almost always produces a perfect case with perhaps 3 percent needing a second firing, our deserts over the years have had a fair population of jack rabbits we usually spend summers picking on them while fire forming our cases, I've never used nosler brass, but hornady federal Winchester and remington both standard and nickel never had any problems with any of them, for big game I stick with The 115 and 120 gr slugs there are over a dozen powders That will safely push these slugs over 3000 fps some will produce over 3100 my go to rifle wears a 21 inch tube and weighs 6 pounds in the field it too produces over 3000 and its the one on its third barrel, A safe load should give 5 or 6 firings with the primer pockets still being tight,</p></blockquote><p></p>
[QUOTE="Bret GRAVELINE Graveline, post: 2216061, member: 108926"] A quick and easy way to check if your rifle is headspace properly is take a Virgin round or case and place a single layer of masking tape on the case head, trim the excess with a sharp knife, the bolt should not close on the case without meeting resistance, if the bolt closes freely that's diffently the problem, I've been shooting and hunting with the 257 Ackley since the late 70's I have 3 with 1 being on its third barrel, my dad and brother plus a couple hunting partners use this round as well, I have chambered and fired nearly everything Ackley from the 17 hornet to a Ackley improved 338 lapua, I have improved thousands of rounds, I have tried all the recommended ways to do so, hydraulic forming to cow, what worked the best for me is a full case of slow burning powder, I like AA 8700 for this, years ago AA had a surplus powder called 8600 it was even slower than 8700 which itself is quite slow, I purchased 32 pounds of the stuff just for fire forming I'm down to about 2 pounds now, in trying faster burning powders to form cases I found even though it produces higher pressure the cases were not always perfect, A full case of the slow stuff almost always produces a perfect case with perhaps 3 percent needing a second firing, our deserts over the years have had a fair population of jack rabbits we usually spend summers picking on them while fire forming our cases, I've never used nosler brass, but hornady federal Winchester and remington both standard and nickel never had any problems with any of them, for big game I stick with The 115 and 120 gr slugs there are over a dozen powders That will safely push these slugs over 3000 fps some will produce over 3100 my go to rifle wears a 21 inch tube and weighs 6 pounds in the field it too produces over 3000 and its the one on its third barrel, A safe load should give 5 or 6 firings with the primer pockets still being tight, [/QUOTE]
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Question about Fire Forming 257 bobs into 257 AI
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