Most lee equipment is cheaply made including the dies. Not to the closest specs. You get what you pay for. RCBS and Hornady make good equipment at reasonable prices. Read a manual and go slow. If you load magnum cartridges and for just your own rifle neck sizing is the way to go. It will extend brass life dramaticlly, but the brass can only be used in the gun it was originally shot in until it is full length sized again.