Thanks, I have that exact barrel on order from them, I have always used proof before, just wondering if I made a mistake or notBuddy of mine has a 20” 1:7.5 6.5 PRC carbon inbound from Preferred Barrel Blanks. I’ll try to remember to come back here and post his impressions once he starts using it. I just took delivery of a stainless .308 from Preferred, haven’t mounted or shot it yet.