Is this the one from the auction today in Clyde Alberta? If it is here is what the description was:
Mauser (Brazil) M0.30M954 - Model 98K - 7 mm
Based on that, it sounds like a model 1954 and those are usually in 30-06. Maybe double check. The description sounds odd. MO .30M954 sounds like model 1954 and the .30 could be caliber.