A deburring tool works great and is cheap. Buy a cheap Lee and find a way to chuck it in a drill and go to town. I have a RCBS Trim Mate Case Prep Centerhttp://www.midwayusa.com/eproductpag...eitemid=565099that has the debur, chamfer, primer pocket cleaner attachments on it that I use, but before then, the Lee tool worked fine.