I use them exclusively for cast bullet load in bottleneck rifle rounds. very easy on the brass, no shaving, and seem to affect the bullet less than standard dies. I've used 4-5 different die sets for the .32-20, and the cowboy dies are by far the best. They work well in the .30-30 as well.
I've been using my normal rcbs dies in conjuction with a Lee expander die. My brass is crackin necks way to fast. Thanks for the imput boys. I think I'll order a set of the cowboy dies from Midway,there givin 10 bucks off on rcbs for the month of December.