Uberti 1873 new hammers and over rotation/throw by

[matthew nielson]

Hello all. Hoping the experts in here can guide me through this issue or let me know if this is a job for a gunsmith.

I have a pair of Uberti Cattleman 1873’s or technically Cimmaron Thunderers. I just switched the original hammers with new runnin iron hammers from Taylor. The only hammers available from them now we’re the new safety style with a retractable firing pin. I replaced the hammers as well as the triggers to work with them.

On function ion test everything is working fine when cocking hammer as slower speeds. The cylinder bolt engages just at the beginning of the groove before the notch and at full cock everything locks into place.

If cocking fast however the bolt does not catch the notch and cylinder over spins landing somewhere in the middle, or in some cases will spin right to the next notch and lock up.

Replacing the original hammer fixes the problem. However On function test with both hammers the bolt appears to engage the cylinder at the exact same time, but will only over rotate with the new runnin iron hammers.

I have ruled out out the bolt spring being the issue.

Does anyone have any clue what could be causing this suttle but serious issue ?

 

[Jackrabbit1957]

Sounds like possible hand/hammer geometry issue, try comparing the hammers side by side and see if the hand appears taller. I know it sounds confusing but a comparison might show what's going on.

 

[Armorer 101]

Take it to a smith that is a single action expert and have it fixed correctly. All you need is to have a center fire revolver fire out of battery.