Recently, I've started hand loading and this past weekend I shot some of my hand loaded ammo. I used Speer brass, CCI 500 prime, Hornady xtp 155gr and Hodgdon HP-38 powder. Gun: H&K USP Comp. Tactical .40. I was having a feed jam. The rounds would cycle, but it would catch on the lip of the casing and the round would be diagonal trying to enter the chamber. What causes this?