It's not a bad rifle - There's many a Mauser owner who'd love to have the DS triggers and the hinged floorplate with the toggle latch.
Just to be sure, you could slug the bore, or take a cerrosafe cast of it to determine the bore diameter.
If it's .318", then ensure that any commercial ammo shot through it is 8x57J, and not plain 8x57 (which is usually 8x57SJ - a .323" spitzer) - and/or use only .318" bullets for handloading.
|