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Old December 28, 2021, 09:18 AM   #9
Shadow9mm
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Join Date: March 21, 2012
Location: Indianapolis, IN
Posts: 3,977
Quote:
Originally Posted by 74A95 View Post
I've slugged seventeen 9mm barrels. Of those, only 2 were less than 0.3560". The total range was between 0.3553" to 0.3578".

I've slugged eight 38/357 barrels. Their range was from 0.3532" to 0.3577".

Yes, bullet makers make two different bullet sizes. But my Ransom Rest results have shown that undersize bullets are as accurate as bullets that are the 'appropriate' size. See my previous post.
I have had problems with undersized bulletsin my gp100. But the cylinder throats are .3585 and I am generally shooting lead. Jacketed are more forgiving. Best thing is to slug the barrel, and load a few to try. Did not say it was unsafe or it would not work. Just that it might not work well, but it should work. Only way to know for sure is to try it.
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