That's a pretty significant size difference. My understanding is that the Single Six has a smaller main frame than the Blackhawk, but the grip frame is the same. The Bearcat however is smaller all the way around and has an integral grip frame. I have never personally held a Bearcat, I will have to hunt one down in a store somewhere and check it out. Single actions don't enjoy much popularity around here anymore. Heck, even the DA revolvers are hardly represented in the local stores anymore. Thanks Z.