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An inexpensive fix.

Reading Mr. Murphy's recent e-mail was quite interesting. Some time ago when I began having chambering problems with my 6mm-284,1 realized that my neck-sizing had created a very slight amount of negative headspace with my cases. After a bit of research, I learned that I needed to full-length size and set back the shoulder.

To measure and set back the shoulder, I used a spent pistol cartridge case turned upside down to fit over the neck of the 6mm case and stop on the shoulder. By using my caliper to measure the overall length of this combination of cases, I was able to get a benchmark length to a spot on the shoulder.

This allowed the adjustment of the full-length 6mm sizing die to bump the shoulder back 0.001 to 0.002. This very inexpensive fix solved the problem quite nicely, and hopefully, it will work for others who encounter a similar problem.

John Steinmeyer

Via e-mail

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Author:Steinmeyer, John
Publication:Shooting Times
Article Type:Letter to the editor
Date:Jul 1, 2016
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