I have a 2 die set for my 7.35 mm. The bullet seating die says to screw the die into the press until it touches the shell holder. If you want a crimp, screw it IN another 1/4 turn. If you don't want a crimp, screw it OUT 1/2 turn. I decided to crimp and the first one worked fine. The second one crushed the brass down and caused the base of the shoulder to flare out. I could not remove the bullet with a puller. I decided to forget the crimp and everything worked fine. Was it the crimp that caused the crush or something else?