Bolt opens too easy

Martin

Martin

Regular
EE Expired
Rating - 100%
38   0   0
Location
NS, now Rome, Italy
I'm wondering what might be wrong if a bolt lever on a Mauser turns in its upright position too easily. It is a #### on opening but when I catch a branch or my jackets it snaps just open and I even lost a round in the field and recently I had a misfire as the bolt was slightly open. Any idea? A weak spring maybe?

BRNO21H.jpg


Thanks

Martin
 
Last edited:
With the rifle on safe the bolt should not open! Do you have an aftermarket 2 position saftey? or are you carrying it in the middle safe but action still operates position?
 
A Brno? Remove the firing pin assembly and inspect the mechanism to determine if the safety is designed to lock the bolt closed. The foreward end of the safety spindle may be intended to make contact with the bolt, to lock in. It may never have been intended to lock the bolt, or may be worn, broken, or modified. Is the safety rotating all the way when applied?
 
It looks as if there was no provision for the safety to lock the bolt. Short of changing out the entire bolt shroud assembly, and safety system, I cannot suggest a way of having a safety that would lock the bolt closed.
 
It has been a while since I had my old 1949 Brno but I don't think the bolt locked with the safety.

I also do not see anything in your photo's that indicate a bolt lock.

I suggest handling your rifle more carefully when you have one in the chamber. When the chamber is empty closing the bolt in the fired position will hold it down.

An after market 3 position safety/shroud can be installed. A nice one is quite expensive.
 
Brno 21

Hello,,,, I have 3 8X57 Mod 21 Brnos and just checked,, all 3 bolts will open easily when safety is on. One of my Brnos is as new, having fired only 15 rds.
I would sugest that there is nothing wrong with your rifle . Just a design feature of the model. In my humble opinion these are one of the nicest Mausers one can own!!! Enjoy it !!
 
Brno 21H

I agree with Fastex.

My 21H will open easily when the safety is engaged. I just checked mine and it open as smooth as silk and I can see why you lost the round. You will have to carry it differently and being aware of it.

Albayo
 
Martin said:
I'm wondering what might be wrong if a bolt lever on a Mauser turns in its upright position too easily. It is a #### on opening but when I catch a branch or my jackets it snaps just open and I even lost a round in the field and recently I had a misfire as the bolt was slightly open. Any idea? A weak spring maybe?

BRNO21H.jpg


Thanks

Martin
Click to expand...

That is a Brno model 21, the safety does NOT lock the bolt down and because the safety takes the tension of the cocking piece the bolt is extremely easy to open.
The problem is not the spring it is a minor quirk in the design of the firearm, should this continue to concern you your only recourse is to change the bolt shroud and safety, generally this is changed to a Brno zg47 unit.
Regards, J Stuart.
 
The rifle been diddled with!!!!! The cocking piece you show is Mauser not BRNO....no way to enage the safety.....very dangerous!!!!! Safety does lock the bolt. Hard part to find....Is the bolt body BRNO? Maybe show a picture....I've got a few of these rifles and done lots of maintenance on them. PM me and maybe I can help you out. Ron
 
rgg7; The Brno 21H or 21F does not lock the bolt down with the factory safety. These rifles are not the same as current production CZ's and are basically a small ring Mauser in most respects. The cocking pieces are pretty much pure Mauser. However the safety does lack the bolt locking feature that original Mauser safeties were equipped with.

The answer is to have a M-70 type three position safety fitted.
 
If your bolt is #### on opening, then releasing the cocking piece as you close the bolt should help, but I must ask you without sounding arrogant I would like to inquire as to why you would travel through the woods with a round chambered in your rifle? Even with the safety on. I notice a lot of people hunt this way and I think it is a very unsafe practice. The way I hunt without a detachable mag is to drop 2 or 3 rounds in the mag well and hold them down with my thumb. Then, close the bolt over the rounds without chambering one, and allow the cocking piece to close. At the first sign of moose, deer, or bear, simply cycle the bolt and you're good to go.
 
I think I'd have lost deer if I carried my rifle with no shell chambered. Too much noise generated chambering a round. Keep the muzzle direction safe and your finger off the trigger. I've had the same problem as you describe and about all you can do is keep an eye on the bolt handle position. Maybe you could come up with some sort of velcro hold down?
 
You must log in or register to reply here.
Back
Top Bottom