Supposedly Walt Berger made the comment if a 243 won't shoot with IMR3031 it won't shoot. I had it on hand and the manuals listed loads. I can see why he made that statement if he really did.
IMR 3031 gets my vote! I definitely agree but then again i dont try anything else anymore
I agree quite a bit with Walt Berger's comment... and that applies to alot of other cartridges.
If you want the fastest MV with a 55 to 60 grain bullet in a 243 ( to include the 58 gr V Max ), I'd be reaching for IMR 4198 or even moreso, Reloader 7. Both will definitely give pretty darn good accuracy along with the quick MV.