45 raptor

I just finished a 45 raptor and I'm having the hardest time making mags that will work. This thing will not load a round for nothing. The bullet goes half way up into the chamber and half still on the mag then jams. I've tried 3 different mags without success. Getting pretty frustrated and just...

I just finished a 45 raptor build and need to find the best powder to use. It's too expensive to buy a bunch and try them out. I just need a good starting point. Thx in advance