Worlds Finest Trimmer 223 Rem
The WFT was developed as a precision tool built to last a lifetime (or more) and uses a source of power most people already own - a cordless or electric drill. Once adjusted to the user's preference, it's simply a matter of chucking it up in a drill and feeding cases in by hand - a pace of 10 cases per minute is pretty easy to maintain. The razor sharp high-speed cutters and the sealed ball bearing incorporated into the trimmer produce an extremely smooth cut.  In most cases it will only be necessary to slightly chamfer the inner edge of the case mouth. Unlike other case trimmers the W.F.T. does not use pilots, the case is supported by the shoulder and body of the case.