18" Proof Research - 6mm ARC build and testing - factory and handloaded ammo
#30
Do the same thing with a 108 and post pics. That was way worst than what I was seeing.

I think that camber needs to be chased with a reemer.

The top angled mark looks like where its hitting the riffling, the other marks look like tool mark chattering in the chamber.

What is the OAL of that round?
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RE: 18" Proof Research - 6mm ARC build and testing - factory and handloaded ammo - by Dino11 - 08-19-2020, 12:34 AM

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