Check to make sure you didn't buckle the shoulder. You can tell by a mushroom shape at the shoulder. It's caused by having the seating/crimp die set improperly that causes the crimp ring to be too deep. As you seat the bullet and/or crimp the case is jammed into the crimp ring, the weakest poimt gives causing the shoulder to buckle.
Like so: not so bad on top to downright ugly on the bottom