Google up TM-43-0001-27
Its an Army Tech Manual for Army Ammunition Sheets Small Caliber Ammunition
in short it has the Load data for wc 844 and 846
It calls for 26.1 gr of Wc 844 for a 62 gr projectile (SS 109 Penetrator) Chamber Pressure 55,000 PSI, Vel 3025 FPS
This Info can be found in...