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Old December 3, 2021, 09:51 PM   #16
tangolima
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Join Date: September 28, 2013
Posts: 2,629
Quote:
Originally Posted by 44 AMP View Post
I've converted a lot of 06 brass into 8mm Mauser and 7.7mm Jap. Never needed to ream, neck turn, or anneal. Never any problems. You're only changing things about 1/4".



You can do those things if you want, but if you don't need to, why bother??
When the shoulder is moved back by 1/4" (is guffy still here?), brass flows from the old shoulder into the new neck, making the wall much thicker. It sometimes shows up as a step in the neck. You have never seen that? I do.

-TL

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