I load 9mm using my 550. I rarely get a perfect fit when I use a chamber gauge. I have a custom barrel in my G34 that I can't use because the rounds won't chamber/seat all the way. When I decap & resize, the brass drops perfectly into the chamber gauge. Since the bell of the brass is expanded by the powder funnel, and since I can see if the problem exists after seating the bullet, I surmise the problem is with the crimp die. The reloaded rounds typically extrude at the base about 1/32" of an inch. They work fine in the factory barrel, but not the custom barrel.
What do I need to do to get the reloads to work correctly?
Thanks!
Ken