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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Componants are finally all here!!!
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<blockquote data-quote="Black Diamond 408" data-source="post: 103755" data-attributes="member: 1563"><p>What Kirby says is right on! My test reamer for the 338 Snipe Tac had .006 per inch taper, it would get sticky before it reached the top loads. I sent the reamer back to be reground to .009 per inch and now it extracts perfectly.</p><p></p><p>Ackley did lots of testing on chamber finish, he found that a fresh cut chamber would impart less stress on the bolt, the more you polish a chamber the more rearward thrust is created. Just somthing for you guys to mull over, i polish my chambers, "Just what he says"</p><p></p><p>There is a fine line where extraction and case taper meet, with full loads. With these big cases i suspect it is right around where Kirby has set his. Mine has just a bit more taper, but you couldnt see it if you set the two side by side. </p><p></p><p>Big-Boomers</p></blockquote><p></p>
[QUOTE="Black Diamond 408, post: 103755, member: 1563"] What Kirby says is right on! My test reamer for the 338 Snipe Tac had .006 per inch taper, it would get sticky before it reached the top loads. I sent the reamer back to be reground to .009 per inch and now it extracts perfectly. Ackley did lots of testing on chamber finish, he found that a fresh cut chamber would impart less stress on the bolt, the more you polish a chamber the more rearward thrust is created. Just somthing for you guys to mull over, i polish my chambers, "Just what he says" There is a fine line where extraction and case taper meet, with full loads. With these big cases i suspect it is right around where Kirby has set his. Mine has just a bit more taper, but you couldnt see it if you set the two side by side. Big-Boomers [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Componants are finally all here!!!
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