Finally got around to using the tool after stripping and cleaning. You have to have the tool well clamped down and good arm muscles to turn the crank. Far too much muscle required to do a few hundred rounds I am thinking of making up a jig and attaching a 1/2 drill with a variable speed trigger to it. It does make the best crimps of any tool that I own. Very consistent from round to round and a well formed crimp with no flaring at the end. The holder does however, leave a notch where each or the holding arms contract the base of the hull and it is a bit of a pain to align the shell into the crimp collet.