I tried the hornady SST sabots 250 grain with 90 grains pyrodex rs and i managed 1 1/4" @ 100 on a windy day. My advice to you is to remove the barrel from the stock, but before doing so, take note and mark the areas of the stock that rub the side of the barrel. 2" was normal with my x-150 before i did the stock work and then free floated the barrel. 5/8" groups @ 100 with 80 grains pyrodex rs and a 385 grain great plains conical. Excellent shooting rifles IMO.