I noticed a dramatic difference after installing a Proof pre-fit. With the factory barrel, I was getting just under 1moa groups with handloads. Once I dropped in the Proof barrel, I started seeing sub-half moa. These barrels rock.
Pro tip: when removing the barrel nut, everyone tends to use a breaker bar with an armorer's wrench. In my case, I couldn't get the proper support/angle when applying pressure and it would slip off. I ended up using an impact wrench in the socket port of the armorer's wrench and the nut came off in literally two seconds.
Pro tip: when removing the barrel nut, everyone tends to use a breaker bar with an armorer's wrench. In my case, I couldn't get the proper support/angle when applying pressure and it would slip off. I ended up using an impact wrench in the socket port of the armorer's wrench and the nut came off in literally two seconds.
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