But the Short answer is: …………………………………………………….AS ALWAY REDUCE BY AT LEAST 10% Cartridge Bullet Weight in Grains Bullet Powder Max Charge (gn) Max Velocity OAL Load Source 9mm Luger 124 RCBS 9mm-124-RN 124gr 700-x 4.1 1122 0 CastData R1 9mm Luger 124 RCBS 09-124-CN 124gr 700-x 3.6 1040 0 CastData R1
I would suspect that 3.5 grs would be a good safe start point.. 700x is a fast powder so tenths are critical when hitting the upper end notcie that I posted the normal 9mm not 9mm +P