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1873 uberti rifle firing pin


cajun bandit
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does anyone happen to know the length of the firing pin  [ having some light hits ]  many rounds fired on this pin 

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1.940" stock Uberti. 

 

If the spring hole in bolt is bured that can be the issue.

www.wheelergunworks.com see tab bolt maintenance 

Edited by Lefty Wheeler
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Dirty firing pin channel or jammed FP spring

Weak hammer strike

Loose junction between firing pin extension and bolt

Egg-shaped worn frame bearing surface that firing pin extension slides through from lots of use without keeping grease on the FPE itself.  This allows FPE to buckle upwards at the bolt interface absorbing lots of energy from the hammer strike

 

But a broken firing pin is the most common problem, and not all broken pins spit out the broken section, so it still appears good until FP is removed from bolt.

 

good luck, GJ

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1 hour ago, Dark Horse Charlie said:

tension on the pin spring.

 

That would be the tension screw for the hammer spring.   Yes, adding a little more tension MIGHT take care of a spring that has seen lots of use, or a replaced spring that was made or adjusted on the light side.  If you gun is still stock, making the Uberti hammer spring even tighter is probably not going to fix anything, except help you build up your triceps.

 

good luck, GJ

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My old gunsmith used to add 40/1000’s of an inch weld to the end of the firing pin Extenstion.   That solved the problems caused from setting primers too deep when loading on a Dillon 650   The weld was slightly smaller in diameter than the firing pin.   It basically made your firing pin have a longer reach 

 

I think Deuce and Carty now sell Extensions with that type of mod for the Winchester 73 rifles

 

 

3GC

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