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Cylinder locking up on Uberti

2494 Views 6 Replies 5 Participants Last post by  mc1911
A few weeks ago, I posted on here about loose screws on my Uberti and a problem with the cylinder locking up. Everybody was so interested in the loose screw issue (since resolved) that the cylinder issue got lost in the shuffle so I'd like to try again. I got a Uberti Cattleman II last year and have now put maybe a hundred to a hundred and fifty rounds through it. If I recall, the first range trip or two was fine but since then the cylinder wants to bind up on me. The hammer becomes difficult to cock and, when going to half-cock and emptying spent cases, the cylinder becomes very difficult to turn. Within a single range trip it seems to get worse the more it is shot so that there is some resistance in cocking with the first cylinder and it is moderately binding when emptying cases but it gets worse (both cocking and ejecting empties) with each new cylinder. By the third or forth cylinder, it's essentially unusable. Once the empties are out of the cylinder, however, it rotates smoothly. I am using factory loads and the gun has never had enough rounds through it to get really dirty although I did remove the cylinder and clean it once after only about fifty rounds. I'm ready to send it back to Uberti but I wanted to see if I was missing anything. This is my first single-action revolver so I am not real experienced with them.

Thanks in advance for any help or advice.
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· real dogs
2,599 Posts
Since it rotates freely without cases in place and worsens with use then fouling is certainly part of the picture. The type of ammo and /or cartridge may be part of the picture. If youre using a low intensity cartridge and your revolver has headspace that is on the long side of specifications the primers may "set back". They will inturn drag on the recoil shield. As you fire more rounds the fouling in the chambers may keep the cases pushed back against the recoil shield. If you coat the case head and primer with magic marker and examine them after firing the cylinder full. On observation of the fired cases the primers will protrude above the case head. This may work in various repeaters but not in most revolvers. One important thing to consider also is that the little "hand" thingy is what rotates the cylinder. They tend to be kinda spindly so overloading it can affect timing. Only a very small dimensional change can make a profound difference.
Knowing what cartridge and load youre using is of interest, regardless. If youre using cricket fart loads then primer set back is likely the cause of your difficulty. In that case the cure may be as simple as using normal powered loads. If the recoil shield is excessively "ramped" the fix is going to fall into factory work.
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