Sorry the way a worded my last post It looked like I was still looking at a single shot. I am looking a Double falling block it looks like a Ruger #1 mated with a European double. It's called a Farquharson Double Rifle made by Bailey Bradshaw it screams to me midrange stalking cartridge. My first thoughts were 30-30 but if I am going custom I figured why not go all the way.
Dan