I don,t know which model Mauser you are looking at. The 8mm is an excellent hunting cartridge. B Square makes no gunsmithing scope mounts for many Mausers. They are a little ugly but most work well. I have half dozen or so old Mausers. I shoot most of them open sighted but have sporterized several 6.5x55 Swedish Mausers and installed Timney triggers in them. The accuracy of thes 6.5's is astounding. You really should have any old Mausers checked out by a good gunsmith before you shoot it with hot hand loaded ammo.