Don't worry about that bulge and don't try to get rid of it.
There are two types of crimping dies:
•
Roll crimp dies are for use with bullets having a crimping groove. These are required for use in revolvers to keep the bullet from working out forward and tying up the cylinder. Here's what they look like:
http://http://i129.photobucket.com/albums/p...a.jpg~original
•
Taper crimp dies are for use with bullets lacking a crimping groove such as those bullets for the 1911. These dies don't crimp the case mouth into the bullet. They merely remove any remaining case mouth flare when used properly.
Here's a photo of both types:
http://http://i129.photobucket.com/albums/p...a.jpg~original