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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="MNbogboy" data-source="post: 2216762" data-attributes="member: 18849"><p>I have 2 257 Bob Ackleys and 2 6.5/257 Bob Ackleys. I always formed brass from 270, 25-06 & 30-06 brass by extending out a longer neck & then trimming to .010 over Roberts length. The longer necks usually shorten case length from .009 to .020 when fireforming. I also made brass from Roberts brass & 7x57 mauser. Had good luck with 8x57 mauseralso.</p><p>Annealing neck shoulder area is mandatory when extending down the longer 06 based cases.</p><p>A while back on a whim I created a 6 dasher case for a friend by shortening a 243 case to dasher length. Then converting the 20° shoulder to 30° in a 6.5 creed die. Once the 30° shoulder was in place I then formed it to 40° in an Ackley die. Nosler can form 280 Ackleys with their processes. Made me think we can form 40° shoulder angles with the correct sequence of steps 20°-30°-40°. Seemed to work ok without a lot of time or effort.</p><p>Never have tried cow but fireform loads using the bullet you plan on down the road and standard Roberts powder charges will form you some nice looking Ackleys. Also seating depth tests can be done while fireforming. Barrel break-in is also accomplished simultaneously. The fireform loads usually will show accuracy capability of the barrel also.</p><p>Have fun with the Ackley.</p><p>This post makes me want to try a few more things.</p><p>Good luck,</p><p>Randy</p></blockquote><p></p>
[QUOTE="MNbogboy, post: 2216762, member: 18849"] I have 2 257 Bob Ackleys and 2 6.5/257 Bob Ackleys. I always formed brass from 270, 25-06 & 30-06 brass by extending out a longer neck & then trimming to .010 over Roberts length. The longer necks usually shorten case length from .009 to .020 when fireforming. I also made brass from Roberts brass & 7x57 mauser. Had good luck with 8x57 mauseralso. Annealing neck shoulder area is mandatory when extending down the longer 06 based cases. A while back on a whim I created a 6 dasher case for a friend by shortening a 243 case to dasher length. Then converting the 20° shoulder to 30° in a 6.5 creed die. Once the 30° shoulder was in place I then formed it to 40° in an Ackley die. Nosler can form 280 Ackleys with their processes. Made me think we can form 40° shoulder angles with the correct sequence of steps 20°-30°-40°. Seemed to work ok without a lot of time or effort. Never have tried cow but fireform loads using the bullet you plan on down the road and standard Roberts powder charges will form you some nice looking Ackleys. Also seating depth tests can be done while fireforming. Barrel break-in is also accomplished simultaneously. The fireform loads usually will show accuracy capability of the barrel also. Have fun with the Ackley. This post makes me want to try a few more things. Good luck, Randy [/QUOTE]
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Question about Fire Forming 257 bobs into 257 AI
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