CZ455 Firing Pin

rdinatal

rdinatal

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I have a question to the CZ45x owners.

Took my 455 American to shoot the other day while it was cold. It had less than 50% light to no primer strikes. The ammo fired fine in a pistol. I was thinking the pin was held up by too much lube and it being cold (45 deg) was exacerbating the condition. Last time it was used the temp was 80 deg or so with no issues.

Today, I had a chance to take the bolt apart for a cleaning. The pin had a bit more lube on it than 'normal' but not a lot, cleaned it anyways. Upon assembly I noticed while sliding the pin into the bolt the pin was binding the last 1/8". Not bad but enough so it would seem to be a problem. After another solvent cleaning, with pipe cleaners, brushes, same deal. There is no wear on any section of the pin indicating binding, no burrs. The bolt has never been dropped.

Is this 'normal' for a CZ bolt/pin movement??
 
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I have a friend who had the same issues with light strikes with his 455 and he upgraded to DIP firing pin spring without any issues. It is about a $10 part if I recall correctly. If you can't find the source of the binding it may be worth replacing the spring.

<>< Fish
 
My 452 is my go to for 22lr rounds that won't go bang in another gun. If it doesn't go bang in it....... it probably isn't going bang in anything else.

By chance..... have you dry fired it some and maybe the front of the pin has been flattened out or shortened?
 
Pin isn't bent. No dry firing.

Only noticed an issue when it was cold out. The firing pin hole in the bolt face seems to be off a bit. Polished the pin in that area and now it's smoother by 50%.
 
BlackGun said:
Compression of the metal in the firing pin. Barrel end.
Click to expand...

No, I wouldn't say so. When the firing pin is inserted into the hole from the bolt face there is plenty of clearance. Although the pin is smoother, it's not moving freely the last 1/8".

I will ink the side of the pin where I think it's sliding against the bolt face hole tonight to see if it gets marked.
 
rdinatal said:
No, I wouldn't say so. When the firing pin is inserted into the hole from the bolt face there is plenty of clearance. Although the pin is smoother, it's not moving freely the last 1/8".

I will ink the side of the pin where I think it's sliding against the bolt face hole tonight to see if it gets marked.
Click to expand...
My point is the last 1/8” makes contact due to the firing pin has enlarged from continued strikes thus binding. No gunsmith but pin or spring are good starting points.
 
Pink_Vapor said:
WOW, those 22 firing pins look like they weigh a pound. What's the lock time on that thing?
Click to expand...

Wow, I have a 452 and have never had the bolt apart. Firing pin is quite hefty.

IMG_9193.JPG
 
I would take mine apart and look for possible scenarios but then I might be a partner in a needed resolution afterwards.
 
BlackGun said:
My point is the last 1/8” makes contact due to the firing pin has enlarged from continued strikes thus binding. No gunsmith but pin or spring are good starting points.
Click to expand...

I hear you. The rifle has not been dry fired and it's only two years old with less than 300 rounds. The F2F was only observed when very cold.

After cleaning the problem may have gone away but I observed the binding. I could be chasing Unicorns so I asked the CFF Collective of CZ owners what they observed.
 
I keep empty shell casing in a little box for when I want to dry fire. Just insert in the chamber and close the bolt. Don't pull the bolt back though.
 
rdinatal said:
I hear you. The rifle has not been dry fired and it's only two years old with less than 300 rounds. The F2F was only observed when very cold.

After cleaning the problem may have gone away but I observed the binding. I could be chasing Unicorns so I asked the CFF Collective of CZ owners what they observed.
Click to expand...
Never mind. 300 rounds is not going to expand a pin. I shot mine with the shipping lube and a shot of can oil in the bolt in 30 degrees. Never misfired. I don’t clean a new out of the box gun before it gets fired. Heck, I don’t want to clean a gun twice in one day. I don’t clean after every shoot either except for a oil wipe down. I keep the gun out so I know it’s been fired so it doesn’t get put up for extended periods dirty. I do clean pistols after shoots unless I will shoot within a week.
 
Dry firing a 455 shouldn't hurt a thing. That's straight from CZ.
What I would do is e-mail their customer service and see what they have to say about your problem. They'll likely make it right one way or another.
 
rdinatal said:
I will ink the side of the pin where I think it's sliding against the bolt face hole tonight to see if it gets marked.
Click to expand...

This is your best place to start. Dry fire shouldn't hurt your rifle. I have a 452 with thousands of dry fire rounds fired, firing pin is identical to when I got it new. Mark it up, push it down the firing pin channel a few times pull it out and post up some pics so we can help out.
 
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