I have a couple 8 pound kegs of Military Surplus WC 844, which (I have been told) was originally used to load military 5.56×45 M193 ammo. Since there is VERY LITTLE DATA available for Milsurp powders, I thought it might benefit someone to post my chronograph results for Hornady 55 gr. FMJ BT bullets.
Keep in mind, the fact that Milsurp powders can vary significantly from lot to lot, so start low and work up! You are on your own if you decide to use this data!
25.18 grains WC 844, 55 gr. FMJ BT, 2755 fps AVG, 12 fps SD, from my AR with BA 16\” SS barrel 2.217\” OAL
25.83 grains WC 844, 55 gr. FMJ BT, 2859 fps AVG, 27 fps SD, from my AR with BA 16\” SS barrel 2.217\” OAL
27.10 grains WC 844, 55 gr. FMJ BT, 3028 fps AVG, 22 fps SD, from my AR with BA 16\” SS barrel 2.217\” OAL (this load was slightly flattening my CCI 400 primers… I didn\’t go any hotter, and accuracy was better with the slower loads.)