check out this site Willy, lots of stuff to spend $ on, has some good deals on the 6.5 ball ammo
http://www.samcoglobal.com/
btw, they have hte orignal bayonets, slings, and ammo pouches to got with your mauser
I've been thinking about picking up one of these
https://www.samcoglobal.com/1-1916.html its rechambered in 308
the K31's are nice, but they've gone up a bit, and the 7.5 Swiss isn't cheap to shoot