Thanks very much for the info Double B. Yes, my SB1 originally came with a shotgun barrel. I definitely want to eventually get an SB2 and try max. Barrel should be arriving today according to package tracking, I'm hoping it doesn't take much fitting. I've read it may need sanding here or there are a shim. We'll see. Since I'm staying with mag, you suggest something like Remington 180gr SJHP High Terminal Performance? When I just Google for suggestions I have to wade through a bunch of forums with people saying they wouldn't use .357 mag for deer, but I did find recommendations for Hornady XTP 158gr JHP and Federal 158gr Fusion. Thought I'd try here and see what folks are using.