To answer your question, Yes. I had a Douglas Super Duper, Premium, Air Gaged, XX, Quadruple Lapped, well you get the idea! Chambered in 7mm STW that never shot better than 1 1/2 MOA even after several scopes and stocks. About 500 rounds it went to 9 MOA and makes a real nice SS Tomato stake! No plans at present to ever chamber any caliber over 50 grs. powder capacity again.