I'm trying to resize some ADG 300 PRC down to 7mm. New brass neck neck diameter is .333 a loaded dummy round after neck down is .312.
I'm using a .323 and .316 bushings in a Redding competition die. When I use the .323 bushing it sizes the case down from .333 to .316 not .323. Any reason as to why the bushings are under sizing.
If I start with the .316 bushing is sizes the case from .333 all the way down to .306 not .316
I'm using a .323 and .316 bushings in a Redding competition die. When I use the .323 bushing it sizes the case down from .333 to .316 not .323. Any reason as to why the bushings are under sizing.
If I start with the .316 bushing is sizes the case from .333 all the way down to .306 not .316