John R- He probably has a gun chambered for the 41 Special.
I don't have any great ideas for for shortening a bunch of cases that much. I have shortened 30-30 cases to 30 Herrett with a tubing cutter and it isn't easy. I have also used a power mitre saw with a carbide blade for shortening to 30 Herrett and for cutting 375 Winchester down to 375 Supermag.
I drilled a hole the size of the case in the side of a block of 2x4 and mounted the block on the saw. That worked pretty good.
Another trimming method I have used to cut a lot off a case is to put the case in a Lee caseholder for their little trimmer, and mount the caseholder in a drill press vise. I then mounted the cutter in the drill chuck and set the depth stop.
Harbor Frieght sells a mini bench top cutoff saw that seems like it would work well as a brass trimmer:
http://www.harborfreight.com/cpi/cta...emnumber=42307