I shoot a 1.150 in my 34, diff grain bullet and powder. Glock chambers are deep but the mag on a 9mm does hang for some people with anything over the 1.150. I loaded to 1.150 because it is the most accurate and consistant in my gun from my hands, my spread is way tight about 25fps with range brass. Try this one, 147gr rn / 3.0 vit320 @1.150. oh and you will need a 13lb recoil spring -3 coils or an 11lb ismi spring. (giving away my secrets)