The 7mm Remington Magnum is the ballistic equivalent of the .30-06 except in 7mm diameter. I own one, and would consider it for any game except deer-in-timber and the largest bears. The Santa Barbara Mauser's were made using actions identical (at the time) to Interarms Mark.X's, although I don't know if they were sourced from Zastava like Interarms or from the Spanish foundry at La Coruna (I have two of those actions). In any event, I'd have absolutely zero qualms about (a) buying that rifle (if you don't, maybe I will :) ) or (b) using it. The 7mm Rem Mag is well known, highly respected, and will do the job.
NRA Life member
NAHC Life member