Did you get the barrel directly from muller? Or from someone esle? Also what contour is it? I have a couple barrels I need to pick up and want to use a couple carbons for my hinting rifles. One will be a 6.5 or 7ss the other is my coyote rifle and I'm still undecided on that still.Thank you My friend bob built the whole thing and the barrel is a muller carbon barrel 1-8 twist 26 In