Make sure your ejector rod is tight, righty tighty, they will sometimes work loose and a little bit of blue lock-tight is your friend.
Check the gap between the face of the cylinder and the forcing cone. You should be able to see daylight through the gap.
Make sure the cylinder stop on the bottom of the inside frame is not stuck in the up position.
Also, I once bought some reloads that were blowing unburnt powder into everything, threw them away.