fist of all the 98 mauser is a fine action for a sporing rifle.pretty strong.i have seen 1000 yard benchrest rifles that use these actions in many different calibers.but........these actions were mass produced by a lot of manufacturers during wartime.the best ones to my knowledge have BRNO on the large ring.these actions are heat treated properly.some of the others were made elseware and are not of the same quality.these actions are "sloppy" as far as the bolt locking up and thus not keeping the bolt face square with the chamber.most of these actions are "military surplus".they can be worked on and gotten into decent shape by a gunsmith.a mauser also has a "claw"extractor.they were designed to pick up a round from the magazine,and not to be used as a single shot.a gunsmith may be able to help out here too,those 1000 yard rifles wearing a mauser are single shots.please dont take the info i'm giving you as "you got junk"its quite a fine piece of engineering/still used today.i'm by no means an expert,just letting you know what i know.i have a 98 mauser in 30-06,love it for pa whitetails in woods.wouldnt trade it for a thing.jason