I have an MGM G2 rifle barrel in 6.5 Grendel and it absolutely fantastic in finish (stainless) and a literal tack driver. I took a very nice big body 8 point here opening weekend of Deer Season with it at 182 yds. I hit within about 1.5 inches from my aiming point, I was using a tree to lean against. I have had various barrels from all three makers mentioned but since Mike Sirois (OTT) doesn't make barrels anymore my next choice would be MGM then Bullberry and SSK. They all make top notch barrels but that is just my choice.
Steve..........
Steve..........