A friend of mine is having similar problems with his 111 Hunter in 338 LM. He can't hit paper at 100 or 200 yards with factory 250 grain rounds. He had his Night-force 8X32 scope in high Night Force rings. I changed those to medium height rings to bring the scope closer to the bore. Tried bore sighting with my collimator and found the spud is too short to clear the muzzle brake and enter the bore so tried unscrewing the muzzle brake. The damned thing is screwed on so tight the barrel ended up turning in the receiver about 1/2" ruining the head space and the MB is still tight like it was welded on! The smooth barrel nut is still in place too. Everything on hold now until a "GO" gauge gets here tomorrow..