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Old April 8, 2011, 03:48 PM   #14
hornetguy
Senior Member
 
Join Date: January 14, 2011
Location: on the north side of DFW
Posts: 970
From my experience fireforming cases, I have a difficult time believing that a dimpled shoulder could cause any kind of discrepancy in your accuracy, unless you've REALLY dimpled it... like half the circumference of the case, which could cause a weird headspacing event.

Other than that, I just can't see it being any kind of problem. When fireforming my .22 K-Hornet cases, I'm blowing out the whole shoulder and case body, and the accuracy is almost identical to my pet loads in fireformed brass. No fliers, no "what happened to THAT one?" kind of things.

Dimples? We ain't scared of no steenkin dimples! Shoot em!
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