I stopped into the local gunshop today and I ended up walking out with what I thought was a Steyr M95 straight pull rifle. When I went to chamber the ammo, though, I noticed it wouldn't even begin to chamber. Closer inspection revealed that it appears to be an M95/24 which is chambered in 8mm Mauser instead of 8x56R. Is there a way to safely tell for sure what I picked up and what it's worth? There's not a lot of info online about identifying them.