Just got this barrel last week and took it out for the first time yesterday. Wow this thing recoils like my 450 marlin barrel!! I think maybe this gun is little too light. Shot 3 different types of slugs:2-3/4" Rem. Buckhammers, 3" federals w/ tipped barnes expanders, 2-3/4" win. partition gold. Was raining, but still did some off-hand shooting at 50 yds. The buckhammers did the best with all but 1 hole touching each other. The federal barnes expanders coming in second w/ 3-4 in. group. The partition golds did not fare very well. But that might because the recoil got to me alittle. I'm not liking this thumbhole stock that much. My ultra laminate stock feels a bit better as far as recoil. I shoot my 450 marlin all day with that stock and have no problems. I think the comb is too high for this open sight barrel, though I would like to try it. I might try putting some weight in the thumbhole stock first. Can this be done??? Have not took the pad off and looked to see if there is a place to put weight. Has any one else tryed out the new thumbhole stocks?? What was your exp. with them???