DB Bill

I understand that Benelli has begun selling R1 barrels chambered in the 9.3x62mm in Europe --- does anyone know what else is available in Europe that we can't get in the U.S.? Or where I could buy an R1 chambered in 9.3x62mm?

I understand that you can switch barrels or different calibers on a R1 rifle --- are there any restrictions such as they must have the same size bolt-face or they must both have about the same length? Or ??? Does anyone have more than one barrel and if so which barrels?