There are doubles chambered in 300WM, they can be had, but you'll likely have to import one, and wait to get it built. 12/30RBlaser is around, or at least easier to get, but, ammo isn't exactly corner store stuff. Cdn Tire and CSC keep it here in Cgy, I got some from Wolverine, Epps and Tradex over the years also. It's a rimmed 30-06AI.