On my handloads for my .45 ACP that I shoot out of my Taurus 24/7 Pro, I have a question. I am loading with 4.7 gr of Titegroup, CCI LP Pistol primers, and various brass, topped with a 185 gr Ranier, copper clad bullet. Shoots a pretty good group, but on every single case there is evidence of gas blowby that I don't see with commercial ammo. Am I not getting enough powder for case expansion to seal the chamber when I shoot? Do I need to up the charge weight to expand out the brass to seal? Primers look very good, no pressure signs at all.