I started loading 9mm with a Lee auto drum and loaded about 30 rounds and everything was perfect with that measure until last night. I started loading what I thought was 4.2gr of HP-38 and I measure about the 5-6th one because I have a little OCD. Well that one threw 4.4gr which is hodgdons max. I then ran the turret through each stage and threw another charge and it threw 4.4gr and did this about 5 times. I turned the dial in a bit until I hit 4.2gr and checked it 5 times and it was dead on so I loaded 10rounds and had to pull about 10rds that threw at 4.4gr and some were a little light at 4.1gr.
what am I doing wrong? I empty the hopper and drum after each loading session and put the powder back in the bottle.
what am I doing wrong? I empty the hopper and drum after each loading session and put the powder back in the bottle.