MM,for sure it's not a light setup. A while back I saw stag offering the 6 in a few shorter barrel configurations. Don't think that's the rule tho and may warrant a phone call. In my experience they are very customer friendly..for the record they use ER Shaw barrels in the 6.
Evidently Shaw has come a LONG way with their barrels if you have 3 that shoot 1/2 inch groups.
I sometimes had a time finding the right load to shoot .5 moa repeatably with TOP line barrels.
Thats good info to know though, when a cheap barrel will knock out winning groups easily.