1 1/2 is bad at 100
1 1/2 is bad at 100
Need more info. What kind of scope and rings are you using? Are you shooting off bags or some kind of led sled? Having it cryoed may or may not help, but it only cost $75 dollars so it is worth trying in my opinion.
Well, 300 round will be more suceptible to wind than say a 243. But I would think it could do better than 1 1/2" at 200yds. Who knows