There is an original M51 elgrifle for sale on auctionarms.com, no. 9080214. Go to the main site and there is a space to insert the sale number. Good photos. Interesting to compare to this handsomely modified rifle. The original calibre on these was 8x57, so Steve's rifle must have been rebarreled. In Scandinavia, an "elg" is what we call a moose, so apparently the 6.5x55 on the military Krags was not thought sufficient. The guns were made at the government arsenal and were sold to Norwegian NRA members. There is an earlier M48 elgrifle, also 8x57, that is a little different, am too lazy to give all the details unless someone asks me. The 8x57 was a low powered special load, again from the arsenal, that I think used the original .318" bullet rather than the later .323". American factory 8mm Mauser loads which are loaded way down to be safe in 1888 Mausers ought to be OK, but don't take my word for it !! I have original M48 and M51s in my Krag sporter collection but have never fired them.