The 3rd gun is a newly built gun that only has about 75 rounds through it.

It is an American Defense upper, with a SIG lower, a Rise Armament 16" barrel & the only scope I had around that was not mounted is an older BSA 1-6x but it seems to hold zero for range work in the past when used, but at best, a 6x scope, even a good one, is a bit of a handicap for this kind of group shooting.

Likely a different scope & a little more break-in & it may do a bit better.

The Gun
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The Targets
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MM