629-3 classic 6 spots on the cylinder

T

turkeybuzzard

New member
I bought a new to me S&W 629-3 classic with 6 1/2" barrel, shoots and looks good. I can shoot 6 rounds and a black spot will appear about a 1/4 to 3/8's of an inch from the front of the cylinder on every loaded round, not on the flutes. (I don't know if I am saying this right) I can take some metal polish and get it off and it will be back on the next round of shots. The only thing I can think of is maybe the gap between the cylinder and the barrel is to wide letting more gas out? This is something new to me?
 
If I understand you correctly- it's probably just carbon that gets reflected off of the inside of the top strap, and deposited on the cylinder. My Security Six does something similar.
 
In m opinion its normal .../my 629's and 66's do the same thing.....and so do my nickel model 29's and 27's and 19's .../ but its a little worse on my 629's and 29's ...

It might change a little with the ammo you select..( I reload - but I still get it as well..) and its worse on 2 1/2" and 4" guns than it is on 6" or 8 3/8" guns...
 
I have a stainless redhawk in 44 as well as a singlesix blackhawk. Neither of them does this, same reloads. My 686 l frame 6' barrel does not do it either. Thats why I posted the question. They will get dirty yes, but will wipe off. It wont come off the 629 unless I use flitz, in my opinion one out of four guns should not do that.
 
The only thing I can think of is maybe the gap between the cylinder and the barrel is to wide letting more gas out?
Click to expand...

Have you measured the gap with a feeler gauge? And not just one, all six.
same reloads
Click to expand...

I also reload, however you might consider running a few factory rounds through just to see what you see... (I know, factory ammo when one is a reloader... but, you never know till you try.)
 
Regardless of what your other guns are doing, this is a very common condition on a lot of revolvers. It may be worse on one than another due to several factors such as cylinder gap, etc. Also, different powders do different things when burning. You need to realize that the 44 uses a lot of hot powder. Ever shot that thing at night? You wouldn't believe the corona that comes out of that thing. All gas and burning powder particals. FYI: my 686 does this with some powders and not others. All part of shooting. If you shoot it, it's not going to look brand new forever.
 
What you're describing is completely normal on a stainless or nickel revolver. It actually happens with a blued gun too, but you simply don't notice it due to the color of the finish.

On a stainless gun, a lead remover cloth will take these marks (as well as the burn rings on the front of the cylinder) off in short order.
 
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