H332 will work in bullet weights from 40 to 80 grains. However, in several hundred 223 threads over the years, I do not recall anyone saying that their best accuracy was with that powder.
If you do not use the hard cup primers, sooner or later you will get a slam fire. CCI's are harder cup than most primers, but the CCI #41 are NATO Spec. And a general rule of thumb is to use magnum primers (CCI 450) with ball (spherical) powders.
Last edited by Shoney; July 29, 2011 at 12:55 AM.