myronman3: Yep, it is a Cowboy Action Shooting bullet and I guess (assume) that's what the CAS stands for. I had seen this bullet in print in the American Handgunner twice before and finally got a handle on what it was. The bullet was used in an article written by Mike Venturino but he mis-labeled the bullet number and it took me a bit to get a response from him as to what it actually was. It has a really wide metplat that appears to look about as wide as a 44 mag's swc metplat. Mikey.