I still haven't had any luck finding a load using IMR4350. So far my best grouping has been 3" at 100 which is way off for my gun. Just to make sure it wasn't my gun or scope, after trying several different load recipes and seating depths with the IMR4350 with no luck, I shot several sub 1" groups at 100 yards using 150 grain Sierra Gamekings, 57.5 grains of H414, and Winchester casings. I also shot some Federal 150 grain Power Shoks and got several groups of 3/4". So for some reason, I am supposing that this rifle just does not like this brand of powder for some reason.
