Thread: CZ 527 Mauser Feed Issues.

The extractor sounds like it's not clicking over the rim of the case correctly, camming the case to one side and binding the action up. Mauser's are notorious for this, the dreaded Mauser extractor 'click' as everything sorts itself into place on the way into the chamber.

A trip to a gunsmith would probably be in order to sort it as it's easy to cock it up if you aren't onto it. Then it won't work at all...

The mag polish job you mentioned to stop the cases getting scratched up is fairly easy to perform, and low risk. Just take the minimum off to remove the problem (sharp edges) and no more. As someone mentioned, the Mauser actions were designed to be operated by men getting shot at - they don't tend to like being girly'd about (apologies to girls but that's the easiest way to describe this). A smartly worked bolt with a lightly oiled boltway to reduce binding does wonders for these actions and tends to fix all manner or issues with feeding. Unfortunately where we use them (in tight bush up close to animals where we don't want excess noise) slapping a bolt aggressively is not something we want!

I had this issue with a Syrian M48a action I built into a sporter - took a long time and a lot of polishing to get it to cycle without the click or binding or jamming and as part of that I had to get the extractor's claw welded up to extend it as I shortened the claw to aid it slipping over the case rim. That didn't help the feeding until I ground the extractor's spring tail pad down to reduce the spring tension inside the receivers bolt raceways which reduced the binding and the tension on the claw. This meant that the extractor claw was then too short to reliably grab the case rim (odd occasion of popping out from under the claw) so it needed to be repaired and reground (a good tig welder is your saviour!!!). There was a lot more work involved in reshaping the bolt face rim channel to remove the binding here (this was a fixed dual stack mag not a detachable single) and I replaced the bottom metal with the solid metal Swedish M96 type (the M48a is an intermediate length action the same as the M96). Going for the Swedish bottom metal fixed the issues with the rounds hanging up and jamming half way through the feed process - the final step was a careful polish and slight reshape of the feed ramp and polish of the feed rails. This resulted in a Mauser action that actually properly feeds .308 rounds no matter how you work the bolt fast, slow, stopping half way, dumping a round into the action and not feeding it from the mag (this is usually an absolute requirement for a Mauser controlled round action as normally the claw is likely to be damaged by not feeding from the mag so that the case rim engages under the extractor). I can also empty the mag by sort stroking the bolt to release the rounds from the mag rails and then drop them straight out of the action onto a flat surface - all without stuffing up the 'controlled round feed' advantages when you work the bolt normally. So fixing your action to work correctly can be done but it takes a heap of methodical and pendantic work and it's easy to cock it up,