JBLEDSOE: I have achieved exceptional accuracy in my all stock Remington 40XB-BR 222 Remington Rifle using H 322 powder, Federal brass, Federal 205 M (match) primers and Berger 52 gr. BR bullets!
As you have posted here on the Varmint Reloading Forum, then, I also want to suggest the 52 gr. Speer H.P. Flat Base bullet for when you are strictly Varminting.
Wishing you continued success and best of luck with your 222 Remington!
Hold into the wind
VarmintGuy
P.S.: I have read recently that the fine folks at LaPua Brass will begin manufacture and sale of 222 Remington brass AGAIN, next year!
That is a true plus for 222 Remington shooters.