Hi Caps won't Jam if you are using BB Bastards brand BB's.
The crappy BB's are not held to the high standards that BB Bastards are famous for. The poor quality BB's have mis shapen BB's that when bulk poured into a hi Cap will go un noticed and jarr the winding / spring and feeding system of a Hi cap. That will stop your game.
This Mid and Low and real Cap's are fanatics of the Milsim experience and will spout much like the Westboro Baptists. Fill your hicaps and spray them till they curl in a corner. Espesially this Guy .............
Official ASC "Dumb Ass"