Here is a series of real world tests on a variety of powders in the 5.56 (Wylde) attempting to duplicate the factory loading of MK 262 as produced by Black Hill, 77 gr SMK.
When you open the link, the entire series, by test episode, will come up on the right.
In almost every case, his results have pretty closely mirrored my results with the same combinations, so that's why I say it real world.
MM
Duplicating MK 262 from Black Hills
