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Rifles, Reloading, Optics, Equipment
Reloading
rcbs full length die and cam over...
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<blockquote data-quote="MagnumManiac" data-source="post: 1438962" data-attributes="member: 10755"><p>The simple fact is that cam over is NOT always desirable.</p><p>The easiest way to determine HOW MUCH sizing is required is to index your lock ring with 1/12 marks, each represent about .004" adjustment in height. Back the die out 1/2 turn from touching the shell holder and make a mark on the press and the die. Size a case, clean it, chamber it, if it is TIGHT to close the bolt, screw the die IN 1/12 as indicated by your lock ring indexes, repeat until a slight feel is felt on bolt turn down, then screw the die IN an additional 1/24 turn, this should give you around .002" shoulder bump.</p><p>I run a few Weatherby cases, I will tell you that this design resists sizing moreso than angled shoulders and can be a PITA to get right, sometimes you need to bump more than .002" to give reliable chambering.</p><p></p><p>Hope this helps.</p><p></p><p>Cheers.</p><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1438962, member: 10755"] The simple fact is that cam over is NOT always desirable. The easiest way to determine HOW MUCH sizing is required is to index your lock ring with 1/12 marks, each represent about .004” adjustment in height. Back the die out 1/2 turn from touching the shell holder and make a mark on the press and the die. Size a case, clean it, chamber it, if it is TIGHT to close the bolt, screw the die IN 1/12 as indicated by your lock ring indexes, repeat until a slight feel is felt on bolt turn down, then screw the die IN an additional 1/24 turn, this should give you around .002” shoulder bump. I run a few Weatherby cases, I will tell you that this design resists sizing moreso than angled shoulders and can be a PITA to get right, sometimes you need to bump more than .002” to give reliable chambering. Hope this helps. Cheers. :) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
rcbs full length die and cam over...
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