I have 2 FCP Mcmillan's in .308. I'm gonna take the barrel off of 1 and cut it down to 20" and replace the other with a 6.5x47 barrel I have on order with mysticplayer. The .308 with the stock 24" barrel is shooting really well with no ammo playing yet. I shot a 10 shot group that was .750" at 100 and I know it can do better because I've been out of it for awhile. Too busy it seems.