Congrats Nate on an interesting commercial Oberndorf Model 98 Mauser. Yours here, a Model "S" Stutzen (full stock model without apparent steel stock muzzle cap). As chambering original in 7x57 it's an "Intermediate" action, such as a factory exclusive length utilized in that chambering. The "N" suffix, same as English "Normal". The bolt has been visibly altered to accommodate a scope and recoil pad presumably substituted for steel buttplate. 'Your SN in 94K range, production date 1928-29.

Though materially "non-original" in collector context, it yet appears a very nice hunting piece given good scope & overall condition. The 7x57 chambering, as you're likely aware, is one of the most timelessly popular European contributions spread worldwide! These Oberndorf factory Mauser rifles as yours, considered about the top rung of mainstream (non-custom) mauser rifle production. Your 'mods' do contribute greatly to the 'shootabality' in practical modern field context! Definitely 'no Bubba' reflected there!

Anything further for me to contribute would require more detailed pix. But I believe what you have before you so far in this Thread, pretty well covers 'it'!

Best!
John

Last edited by iskra; 11/23/21. Reason: Noted the enhanced pix... Duh! :)