Thanks for the in-depth reply.
2in @ 100yds is ok with me, it is an open sight M1 Garand after all. The rifle has a TE 2 barrel I believe, so I have some confidence in it.
The 1903 Springfield generation only had this grade bullets to work with, and they did well, but for the most part I wont expect too much out of these bullets.
If all else fails, I'll have really cheap plinking ammo for rapid fires.