So the Proof Research barrel I purchased has a 5/8x24 threads on the business end and was wondering if any of you have experimented a little with comps? I did some digging and found some research done on the APA fat bastard, did really well but there’s a new version 2 so I don’t know if it’s just as good or if that’s the one the test was done with.
Check out the Insite arms Heathen Brake as well. There's a couple reviews on here for it. I will have one on my 6.5CM in the next couple weeks as well.