Lots of reasons could cause shell stickyness.
1. trim your brass to its >(minimum) acceptable tolerance.
2. consider using a Small base resizing die.
3. a headspace comparator gauge like the Hornady tool is nice to set your dies up with.
4. seat your bullets to their suggested cartridge OAL >(minimum.)
(To cut a die or shellholder) I myself wouldn't resort to such a draconian tactic to remedy this type of issue. Reason being: You would loose your dies lifetime warranty and there are a few other things you need to check out first.