Thread: CZ452 stiff bolt

It's harder to close when chambering a round

Originally Posted by Brad S

It's harder to close when chambering a round

And what about when there is no round?, is it difficult at all or smooth.

Originally Posted by longshot

And what about when there is no round?, is it difficult at all or smooth.

Still a little tight, but probably how it's supposed to be

Originally Posted by Brad S

Still a little tight, but probably how it's supposed to be

I wouldn't put up with a tight bolt/action on a .22LR.

Warning: I've never seen what I'm about to recommend to you done to stiff bolts/actions by anyone else. I came upon this method myself and have successfully used it on six .22LR rifles - 3x JW-15s, 2x CZ 452s and 1x Anschutz 1450.

Some on this forum might say not to do this method...but it works for me and my .22s... so up to you if you follow my advice.

1 - clean all the factory grease/lube off the outside of the bolt and inside of the action with brake cleaner and a rag.
2 - cover the outside of the bolt with the top portion of this tube paste (a black coarse abrasive). Make sure you put it on the base of the bolt handle as well. That surface engages with the receiver when you close the bolt to lock it in place.

https://www.supercheapauto.co.nz/p/d...46/656180.html

3 - Sit down in front of the TV and work the bolt (open and close) about 100 times (probably best when no one else is watching TV ).
4 - Clean the paste off the action and bolt and then put the fine white abrasive on the other side of the tube over the bolt and action.
5 - Work the bolt again for another 100x.

6 - Clean it all off again (esp any that has made it into the chamber).
Result = smooth as silk bolt operation.

Originally Posted by Brad S

Still a little tight, but probably how it's supposed to be

Then unless it is a combination of two seperate problems (one being a foreign body or burr in the workings of the bolt/reciever), then it looks like an issue in the chamber, probably a build up of carbon or other shooting muck.

Have you tried chambering then ejecting a live round and comparing it to a fresh one to observe if there is compression of the projectile or scraping of the cartridge?

Another option is to just try chambering some other types of .22 and see if they fit. Some target .22 rifles struggle to chamber or extract some types of .22 ammo.