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Old October 28, 2020, 06:15 PM   #2
res45
Senior Member
 
Join Date: September 15, 2007
Location: NC
Posts: 744
I powder coat and size my 45 ACP bullet to .452" using the Lee push through sizer or the RCBS Lube A Matic if I get a wild hair and want to use traditional lube.

I use a Lyman pistol die set that has the M die expander, NOE also makes a pistol expander plug that goes inside the Lee Universal expander that works just as well with neither giving me any buldged cases. I also run my loaded rds. through the Lee FCD and have not noticed any différance in accuracy.

The Lee expander doesn't expand the case as much as the Lyman or NOE so that's probably why your seeing the bulge at the base of the bullet as the bullet is doing the final expanding of the case when it's seated.
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