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7WSM, 300WSM or 300WM

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Unread 10-18-2007, 10:21 PM
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Join Date: Sep 2007
Posts: 60
Nyles, thanks for your info, I appreciate it.
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Unread 10-19-2007, 11:45 AM
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Join Date: Feb 2002
Location: Colorado
Posts: 73
Originally Posted by Jumpalot View Post
Also, in my research, I've been reading that it would be better to go with a case that doesn't have a belt. Why?
The reason for this is the fact that when a case head spaces off the belt, it is prone to case separation just forward of the belt. After as little as two or three firings, it may show signs of incipient separation. In other words, it comes down to case life.
This can be alleviated by adjusting your sizing die to let the case head space off the shoulder rather than the belt.
Most FL dies when screwed into the press to touch the shell holder and allow the "cam over," will push the shoulder of the case back far enough that the case then head spaces off the belt. By adjusting the die to NOT push the shoulder that far back, you eliminate the problem.
It helps if you have a head space gauge to get your die set up properly.
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Unread 10-19-2007, 12:51 PM
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Join Date: Dec 2006
Location: FREE RUN, MS
Posts: 774
I only neck size in my 7RM and 300WM, these are hunting guns so they dont get shot that much, brass life is not a concern. I do however chamber every finished round through the gun, every now and then I get one thats snug....I use those for zero checking, and usually chunk it.
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