Alot of guys are modifying those vetterli rifles to centerfire and handloading for them. Very cool guns. I have hunted with my K31 a few times but plan to more.My Brother bought an old Swiss Rifle, a few years ago, made in 1885 chambered for the .41 Swiss Rim Fire cartridge. The rifle has all it's matching parts and the bore looks to be unfired, in perfect condition!! Since there is no ammunition available, it is just a display rifle. Kind of neat, and it is in perfect working order.