Uberti Hombre

[Thumb Buster]

Since buying my Uberti Hombre in .45 Colt almost a decade ago I've messed with this 'kit gun' on numerous occasions.  First thing I noticed was that it was 'over-sprung' as Coffin Maker had posted at one time.  I switched to the bolt/trigger spring with a flat-leaf spring which helped greatly.  There was still a lot of drag in the revolver so deburring and polishing was the next step during which time I noticed two things needing to be attended to; one that the hand would advance the cylinder before the bolt dropped clear.  Okay...no big thing.  A swipe or two on the hand and that issue was solved.  Secondly getting that darned itty-bitty screw back into the frame for the hand plunger was a major pain.  This website answered my question about that screw not being necessary.  Thanks for the information. 

Having shot BP in the revolver several years ago I decided to do a thorough cleaning using moose milk (once again thanks to the info on this website).  I reinstalled the itty-bitty screw just for yucks and giggles noticing as sort of chatter as I thumbed back the hammer.  Oh!  Maybe time to readdress the hand channel!  I polished that again and certain surfaces of the hand especially where the plunger rides.  Nope!  The chatter was still there when the screw was in place.  Taking out the screw seemed to do away with this.  So my question to all is was this chatter between the plunger and the hole it sits in?  To my old eyes it seems the plunger protrudes almost half its length and there is just enough difference in the plunger diameter and the I.D. of the plunger hole that under excessive spring pressure it producing this 'chatter". 

If I am not clear in what I'm asking I apologize.  I can't think of any other surface that could create this.  Again, when I have only the back strap creating the tension the chatter is gone and all is smooth.

Thanks y'all. 

[45 Dragoon]

TB,
 It is more likely the wear pattern on the backside of the hand that the plunger rides against. Using a magnifying glass or a loupe, look for a divot in the surface. The divot is from spinning the cylinder in half cock. There will probably also be a mark extending from the resting position to the end of the cycle and the divot not far from the start.
 The contact end of the plunger may be worn as well and if a sharp shoulder is present, it will "chatter" along the wear mark on the hand.  Added pressure with the screw installed will "magnify" the problem.
 This is the reason I use a longer/ larger diameter plunger (or pushrod as I call it). The longer rod resists "rattling" in its bore and the larger diameter gives more bearing surface. Cleaning up the end of the plunger (rounding the edge but not putting a point in the middle of it) and dressing the backside of the hand  to remove the wear line and divot, should give you many more years of use. I would go out the back door and toss the screw into the yard so as not to be tempted to use it ever again!!  Better yet, a little longer plunger with a little stouter spring will get you closer to a "normal" sound/feel  with less possibility of throw-by.

 As to your own thought of the problem, it could very well be the spring causing the chatter, but only if it has a bend in it. In that case, the addition of the screw would also increase the tension of the spring against the side of the bore. It wouldn't hurt to use a small round file and lightly remove any high spots in the bore and try to straighten the spring or replace.

Mike

[Thumb Buster]

Thanks for the response.  I had the two digits you spoke of and polished them.  The idea of a longer for did cross my mind and my just do that.  Thanks again.