Gunslinger
07-03-2011, 05:57 PM
I found my leading issue with the 9mm to be caused by my Dillon sizing die. After removing a boolit, it measured a surprising .352!! I had noticed the hour-glass shape of the cartridges, but didn't think it was this bad.
I borrowed a Hornady sizing die from a friend. A pulled boolit revealed a measurement of .355. Still too small... and still causing leading. I shoot 130gr wheel weights at 1020fps. I know this is what's causing my leading, as I have changed and adjusted everything else. I shoot a EAA Witness with a polygonal barrel slugged at .356.
Does anyone else have/had the same issue?! Can the die be reamed or anything to size the brass a little bigger?
I only use as much crimp as needed for the cartridge to fall in and out of the chamber by itself.
I borrowed a Hornady sizing die from a friend. A pulled boolit revealed a measurement of .355. Still too small... and still causing leading. I shoot 130gr wheel weights at 1020fps. I know this is what's causing my leading, as I have changed and adjusted everything else. I shoot a EAA Witness with a polygonal barrel slugged at .356.
Does anyone else have/had the same issue?! Can the die be reamed or anything to size the brass a little bigger?
I only use as much crimp as needed for the cartridge to fall in and out of the chamber by itself.