Disclaimer: My 300 99EG has a several modifications including a 20" barrel instead of the original 24" which could explain these these results. Supposedly, the way Hornady gets the extra velocity without drastically increasing pressure is slower/longer burning power.
Anyway, went to the range today for deer season preps. Usually shoot 150 Rem CL but I have some SST's bought earlier this year so they came along too.
100 yard bench. Rem 150 CL's are circled in red. First 2 were high-right thru a clean & oily bore. A little wider than expected but still OK so no adjustment. Next 2 were a nice group 4" right. Adjustment made. Next 4 were good to go.
Next up, 5 SST's. I pulled the one way off to the left due to hot 5.56 brass bouncing off my head. The other 4 were minute of deer, but not too spectacular for my shorter-than-standard barrel