Quote:
Originally Posted by H Richard
Are you roll crimping or taper crimping? If taper crimping the case neck may be a little too large and hitting a small amount of carbon buildup in the chambers. If roll crimping, you can accidentally get too much crimp and the case end can swell out making seating fully difficult. If you aren't getting enough crimp the round may not be sealing enough causing blow by and causing carbon buildup.
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I would assume the die does a taper.
Quote:
Originally Posted by dr. mordo
I'd suggest you reread the directions to that Lee die set. They tell you how to set the crimp. I have been setting mine very light and have had no issues, but being educated in a recent thread I plan to start crimping more tightly.
Basically, you just need to screw down the crimping/seating die a bit more that crimp more tightly.
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Like I said i have always used a factory crimp die for all my other loads and have had no issues. I've never messed around with a 3 die set. I'll try tinkering with the crimp after seating the bullet a bit deeper first.