7.65x53???
Might need that translated into a better known name.
Was going to post but got beat out by a few. The.313 was introduced before the original 8mm Mauser, as a reaction to the French 8mm Lebel. At that time, and until roughly the 1940's the .313 bore size was decently popular in Europe, including notably in the Fir of Westley Richards, and others designing rounds for use in Africa and elsewhere on plains game. The original 8mm Mauser, was a .318 bore diameter (7.92x57J) and was a heavy bullet design, similar in concept to the 30-40 Krag. After the Spitzer design came to be (also of German origin), the bullet weight was dropped to between 150-190 grains, the pressure ramped up, and the bore increased to .323, to prevent being fired in the J. The original action was also notably less stout in design (though still quite strong and proven since), than the 98, which all others that have a true CRF design have followed since, most notably the Model 70 Winchester, and the Ruger 77. There was also a rimmed version in the 7.92x57 JR and JRS.
Dad and I have a pair of 8x57's, mine in a sporterized milsurp Czech BRNO VZ-24, His in a Remington 700 Classic. Both are fine rifles, though the barrel is largely done on mine and will either have an E.R. Shaw, Bartlein or a Shillen in the future. His is outstandingly accurate with anything from 150-220gr pills. There's nothing an '06 can do that the 8mm can't (except be found in virtually every ammo store on God's green earth), and it's still popular in Europe. It's just a PITA to find components here, outside of buying online.
We had to show up the krauts by issuing the 30-06 Springfield.. Mo Powah...
a step up from the 30-40 Kraig..
Ironically we not only stole the action design, but the cartridge but made it taller and more American in .308...
The original 30-03 had a bullet similar to the Krag, but a longer neck than the -06. The .270 retains that neck lengt and makes it quite friendly for hand loading, when it comes to the bullet seating step.
British Enfield 303 is also very sufficient.
My first doe fell to an Enfield Jungle Carbine so chambered. She was on a dead run, and it sent her a$$ over tea kettles at about 80 yards on a dead run... It was impressive.
I wonder if it's possible to have it re-chambered to a more common round?
Or would that be a bad idea?
There are options, but the cartridge and action weren't designed to exceed 55K PSI. To re-chamber it, you'd likely have to re-barrel it, as boring would be your only other option, and I wouldn't push the action beyond 60K PSI. depending on your proclivities, a .250-3000 Savage or .300 Savage would both work quite well in that action. as they were designed to operate between 44K-55K PSI. You'd still have to hand load for best results, but they're both fine cartridges. Or, keep it stock. I have heard of a few Argentine Mausers being converted to 45-70, but that requires many additional steps like modification of the bolt head, extractor, ejector, magazine follower, etc.
If you did bore the barrel, a .338-53 could be an interesting, slightly lower pressure wildcat alternative to the .338 Federal, which is actually a pretty neat and practical round. Just a few thoughts.