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Old 04-18-2017, 03:04 PM   #5 (permalink)
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Join Date: Aug 2014

Originally Posted by tymcneer View Post
Odd... It is easy enough to test... I can freak bore an A5 barrel tonight. I will bring that and a .670 insert on Sunday... It will either work or not.

I already did the test. I have a freak bored barrel at home. Got a 674 insert. I took the breach put of my pistol. Screwed the barrel on with the insert and inserted the bolt with the bumper oring frlm the other end and pushed as hard as i can. Bolt didnt stick. And with the return spring in place during normal usage the bolt doesnt go in as far.

Smallest i shot with it was 679 and no bolt jams.

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