S&W Mod. 60 (no Dash)

[Wraith_K]

I have a S&W Mod. 60 (no dash), and I am not sure if there is problem or not.

At the range this past weekend. Started with 158 FMJ (Western X). It's some pretty old ammo, so I wasn't suprised when a round didn't go off. I thought, "It's old, primer is bad". But it happened once every 5 rounds. On the 2nd time around the cylinder it would fire, or if I removed it and reloaded the dud into the gun.

I changed ammo. 158gr FMJ Sellier and Bellot. Still had 3 rounds out of 50 that did the same thing.

The primer strikes looked a bit light compared to the other 4 in cylinder, but not light enough for it to fire (so I thought).

Could it be worn Firing Pin?, Spring? Or something in the cylinder?

No I should have at the time, but didn't think about it until later to keep track of which chambers were having the 'duds'. Sometimes I would just rotate the cylinder to re-fire the dud and it would shoot just fine.

 

[murphydog]

The most common reason for this would be the mainspring strain screw (on the front grip strap) not being snugged all the way tight. Crud in the action or a too-light spring would also be possible.

 

[Prodigal Son]

I had a similar problem once with my 60. Make sure the hammer block isn't gummed up with a bunch of oil. I over oiled mine but a q-tip fixed it right up.

 

[Wraith_K]

Thanks guys, I'll take a look at her later today.

 

[linde]

The most common reason for this would be the mainspring strain screw (on the front grip strap) not being snugged all the way tight. Crud in the action or a too-light spring would also be possible.

I would lean toward crud in the action or too light a main spring. I'm guessing the OP won't find a strain screw on a 1965 or newer Model 60 since they use a coil main spring.

Russ