A little over a year ago, I noticed the barrel on my 2nd Gen Colt 1851 was loose. Significantly so... It wiggled about 1/16th of an inch at the end of the barrel. I'm sure that if I didn't mostly use this pistol for cowboy action, it would have affected accuracy. (Totally tongue-in-cheek, as there's no way it didn't)! After deciding that I lacked the skills to take on repairing it... I turned it over to a gunsmith. Who kept the gun for about 9 months and gave it back to me... clean and totally assembled. Along with 4 other 2nd Gen 1851s I had him do the "Manhattan conversion" on, along with a new Cimmaron 1878 coach gun. When I got home I noticed the barrel was still loose on this gun. "Ooops, I forgot to do that, it wasn't on your bill" Rather than drive 2 hours and leave it again, I turned it over to another gunsmith just down the road from me. Who admitted, "I don't know how to repair that." So, I told him I do some research and let him know what I learned. Well...it appears you have to drill out a locking pin, unscrew the arbor and either "upset" the threads for a better interference fit, sleeve the frame and cut new threads to fit the arbor in the sleeve, or... seemingly, the "go to" fix is to JB Weld the arbor in place, add a new lock pin, replace cylinder, barrel & wedge, and allow the JB Weld to set. So, that's what he did. I picked up the frame, cylinder, barrel & wedge from him this past Saturday on my way out of town... and I must say, it is rock solid. When I get home this Saturday, I'll reassemble the rest of the gun and test fire it. Maybe attend a local match on Sunday. I've got my fingers crossed that everything is still within tolerances and it'll still set of caps and operate correctly. Of the 4 1851s I use for cowboy action, this is one of my favorites. Along with the other three it sports the Manhattan conversion, a Ruger hand spring & plunder, plus a wire bolt trigger spring by "Heinie". I'm sure Colt afficionados will find the work I've had done to these sacrilegious... but... it's a tool for my competition. & I prefer reliable, dependable tools! Since no topic is complete without pictures...
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Here's a video of me shooting it before I found the problem.

It's the first gun fired.
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