So i purchased a k98 in 308 (supposedly) it had no caliber markings and the previous owner assured me it was 308 but it wasnt! Its 7mm mauser. I now have a steel cased 308 stuck in the chamber, very little force was used to seat the round, i think the steel to steel contact created alot of friction and i cannot get the bolt to open! Its a brazilian 7mm large ring mauser 98. Thanks and I dont feel like going to the gunsmith if there is an easy fix.