Home Forums Hunting & Shooting Ask The Gunwriters Using SR 4756 in 9mm AR-15 with a 7 1/2" barrel ?

I have a 9mm AR-15 with a 7 1/2" barrel. Was given 5 lbs. of SR 4756 and have 12,000 Remington 115 gr. jacketed bullets and 3000 cases.

Looking at IMR pistol data they are calling for 6.3 gr. compressed of SR 4756 and a CCI primer. I put 6.3 gr. in a fired case and a bullet on top of the charge I get 1.152" OAL, just touching the powder, I think that is good for the burn rate of the powder and not worry about bullets being pushed depend in the cases feeding.

I will also shoot some in my Browning Hi-Power and Glock 26.