Pull the bullets dump the powder deprime and toss the cases.
Pro-tip: If you do plan on roll crimping cases at some point, set up the die for your crimp depth, then unscrew the die from your press and put a 7/8 flat washer under the die. Screw the die back in, now you can seat bullets without using the crimp. Once you have a bullet seated to the depth you want, back off the seater stem, unscrew the die, remove the washer and screw the die back in your press. Run your cartridge into the die, then screw the seating stem in until it makes contact with the bullet. Now you are set to seat and crimp in one step.