Below is from QuickLOAD showing the maximum velocity performance ranking for a couple of different bullet weights from some commonly used powders. The criteria I gave it was to load to 100% fill (no compressing) or to 55,000 PSI, whichever was reached first. Both are seated to 2.260" COL. The barrel is 20" for the AR, but the velocity ranking from fastest to slowest doesn't change for barrels 16" and longer. The case capacity is 30.5 grains of water, which is just a typical number coming out of one of my chambers.
Note that some popular powders, like Varget, need compressed loads to match some of the others, which the table below does not allow it to do. Note also that the 55,000 psi limit is SAAMI's. The CIP in Europe allows 430MPa (62,366 psi). They measure it with their pressure sampling points differently located.
Accuracy often depends on ignition characteristics as well as case fill or pressure, so it does not automatically follow that you can discern accuracy from this kind of table. It does, however, give you some sense of how burning rate and bulk density may combine to affect rank of a powder or its potential performance. In the example below, 748 is dense so it is able to be loaded to full pressure in both cases, while, at the other extreme, Varget has more bulk, so it fills the case before reaching the pressure limit.
Code:
77 grain SMK 2.26" COL, 24" barrel
case 100% full or pressure 55,000 psi, whichever comes first.
77 gr. SMK 53 gr. SMK 77 gr. fps 53 gr. fps
748 748 2776 3283
BL-C(2) H335 2771 3248
H4895 H322 2751 3245
TAC X-terminator 2737 3243
H335 REL 10X 2735 3241
H322 TAC 2733 3237
IMR 4895 Accurate 2015 2727 3217
X-terminator IMR 4198 2722 3207
IMR 3031 Accurate 2230 2715 3202
Accurate 2230 BL-C(2) 2701 3194
REL 10X H4198 2698 3162
Accurate 2015 Benchmark 2686 3162
Benchmark H4895 2679 3122
IMR 4198 IMR 3031 2657 3045
H4198 IMR 4895 2643 3033
Varget Varget 2600 2902