An 8mm Mauser is usually a large-ring Model 98 of some kind ( there are MANY kinds), and can be verified via checking a few areas for M98 features that other/older/weaker actions don't have.
1) Cock-on-opening ? (pre M98's are usually cock-on-closing unless modified)
2) Front receiver ring has a larger radius than, and stands proud of, the left receiver wall.
3) The bolt sleeve ( that hold the safety) is flanged around it's forward edge, as a gas escape safety feature
FWIW, once the maker's marking are gone, it's virtually impossible to determine it's origin, and so must be checked out for what it is.
The action, bolt lugs & barrel should be checked for any obvious cracks, rust or other defects.
The headspace should be checked by a gunsmith or knowledgeable person with proper headspace gauges.
The action should get a Rockwell hardness test done, and a Magnafluxing, before considering it as a project gun IMHO.
If it checks out good, it CAN be used as a project - but can easily cost more than a new commercial rifle, once the required mods are done & paid for.
