Thread: ZKK-600 7x57 Hard to chamber

Originally Posted by stug

Are you chambering from the magazine, or just sitting on the mag follower? They have a Mauser extractor so the rim needs to pop up behind the extractor as it comes up from the mag.
Chambering when the round is sitting on the follower may not allow the extractor to bend and pop over the base of the cartridge into the extractor groove.

Yes it’s tight in the magazine, ie 5 rounds or one, I still need to smash the bolt forward to pick up and seat.

Strangely it’s smooth as butter empty.

Magazine floor plate and internal well are both marked “7x57” and are BRNO parts.