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I have a Ruger M-77 Mk-II in 7X57 Mauser that will not feed Remington brass reliably. When the round is pushed into the chamber it takes more force than normal to get the bolt all the way forward. The downstroke of the bolt handle requires a lot more force to push the bolt handle down.
One handloaded round using Remington brass did not eject after firing. I tapped the casing out with a cleaning rod (it came out easily and there were no pressure signs) and the rim had a groove dug into it. It appears as though the claw is not getting a proper grip around the rim.
I have tried Remington factory ammo and have gotten the same results. Federal factory ammo is also hard to chamber but doen't require as much force. Winchester factory ammo feeds like it is supposed to and will cycle without a problem as fast as I can work the bolt.
Has anybody seen this problem before? Any advice would be appreciated. I thought of just getting a big batch of Winchester brass and not worrying about it; but the stuff is almost impossible to find lately so I may just take the rifle to the gunsmith.
-Matt
One handloaded round using Remington brass did not eject after firing. I tapped the casing out with a cleaning rod (it came out easily and there were no pressure signs) and the rim had a groove dug into it. It appears as though the claw is not getting a proper grip around the rim.
I have tried Remington factory ammo and have gotten the same results. Federal factory ammo is also hard to chamber but doen't require as much force. Winchester factory ammo feeds like it is supposed to and will cycle without a problem as fast as I can work the bolt.
Has anybody seen this problem before? Any advice would be appreciated. I thought of just getting a big batch of Winchester brass and not worrying about it; but the stuff is almost impossible to find lately so I may just take the rifle to the gunsmith.
-Matt