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AR15.COM
5/28/2016 1:25:11 AM EDT
Brought home my Optimus this week, and ordered a 2nd Checkmate QD. Now I'm thinking about a 45. The Resistance looks good, can use many of the same mounts as my Optimus, and is in stock.

Is the Resistance rated for .45 Colt on a 20" Winchester 94? My pig loads are 300gr bullets with 22gr of H110 - fairly stout, but not quite a max load.
6/8/2016 9:21:20 AM EDT
[#1]
That load is technically a +P load, and those are more than halfway to 454 casull muzzle energy.

Given your application is a 20" barrel, I think you'll be ok, but it may make sense to use a fixed mount for that.  The fixed barrel spacer is 6061 and we haven't really put it into any crazy testing senarios- just std 9mm, 45ACP etc.
6/8/2016 4:23:15 PM EDT
[#2]
Cool, thanks. I already have a 1/2-28 fixed mount for my Optimus, works great for my Gen2 Sub-2000.
I'll pick up the 5/8-24 fixed mount once my Resistance is approved.