Forgot to insert the metering insert into the rotor once (actually twice, first and last time). Couldn't understand how I was able to spill the powder when pouring it into the reservoir. Took a while before I understood what happened. Cleaning up was not fun!
Ringed barrel
My 686 2,5 inch have a similar ring in the barrel, and I never had a stuck bullet (in that gun). My 640 also have a similar ring. Seems like this, as other have commented, is due to the torquing the barrel.
M29 cylinder
Back in the mid-eighties I had the recessed cylinder on my M29-2 replaced with a non-recessed. I also changed the barrel from 6 inch to 4 inch, taking care of the barrel-cylinder gap. The conversion worked nicely.
M-29 in Norway
Smith & Wesson revolvers are quite "abundant" here in Norway since Colt stopped producing DA revolvers. I bought my first revolver back in 1982 (29-2 6" blue). I had just discovered Elmer Keith and his fascination with the .44 magnum, and I was hooked:D This revolver was sold in...
Bushing on 645
The same happened to my 645 a short time after I bought it brand new. A slight movement developed in the bushing. It didn’t seem to affect the precision of the gun. I later sold the gun, and I miss it.