The Scandinavians had a "gallery load" for the 10.15x61R and a bunch of old rifles prior to the adoption of the small ring m96 Mausers. I guess some of them could have been used for training purposes while the new 6.5x55 made its way into the inventory.
Kinda like we were still using Garands in basic training when the M14 was adopted, and still using M14s in basic training when the M16 was adopted.
despite my nomer I am not particulary vested in firearms knowledge, even my countrys own.
Jimro is probably correct. what I would add is that similar to what he wrote the homeguard/reserves have a history of getting old junk, the last mausers were in "service" until like 15 years ago
I have only seen them hanging on walls (plugged due to laws) and in gundealers safes. never heard aboput anybody hunting with them
not even a big collectors market, I think most of them get destroyed.
never seen commercial ammo for it either.
They pop up now and again amongst relatives and friends, most often when some old dude dies and nobody knew he had it or when somebody renovates an old house and find one of them in a wall or something
This came up because I was looking up some things on the M96 and read a few were chambered in the above training round. Seemed crazy to use a larger round, even with reduced loads, for training. Didn't realize it was the previous service rounds. Must have had a big stockpile of training ammo. I guess NATO doesn't standardize supply accounting(Yes, I know this predates NATO).