Jim Carmichael seems to write an awful lot about using Douglas barrels. He has built several guns using the Douglas XX barrels(which I believe designates Premium barrel). I guess if it's good enough for Jim Carmichael, it's good enough for me. It prompted me to purchase one several years ago but that rifle is long gone. It performed very well but got an offer I couldn't refuse. It has a new home. Built for a 243 win, it shot very well and very consistent.i have used 4 douglas bbl never had a bad one all cals. .22 .17 .6mm 30/06 very good accuracy