Would someone please explain to me why 6 grains of hp-38, with a 200 grain Berry's fp will not cycle in my g21c. I am shooting outside in the cold weather, and i do understand that the porting in the barrel reduces psi. I haven't chrono'd that load yet but i can tell you that when i fire, the case barely comes off 3-4 inches. oal is 1.215. Everything i read says 6-6.2g of hp-38 is max. Ready to bump it up to 6.4. Can someone stear me in the right direction please. I'm about to have a blue light special on this thing, and just stay with my g-32. Thanks, Bill P.S. This pistol is new.