642 spring change, unexpected results

[beatledog7]

OK, this will seem weird.

I just swapped the factory springs in my 642 for a set of Wolff. Job done, and the difference in trigger effort is favorable. However, also I sense two differences in the gun that should not have anything to do with this simple mod.

First, the cylinder lock up seems slightly looser; that is it, it rotates a tad more when locked into battery. Second, when swung out, the cylinder now contacts the frame slightly as I turn it to load.

Any idea what's going on?

 

[mmitch]

Skipper,

Did you get the side screws back into their original holes? The forward-most screw also retains the crane and a swap with either of the other two could foul the cylinder's action.

Mike (usedtobeasecondclassPH)

 

[beatledog7]

Good thought, but they are in the right holes. Thanks.

 

[Pict]

That's really strange. It sounds like something went awry during reassembly, but examination of my 642 isn't giving me any ideas. What part of the cylinder is contacting the frame?

 

[beatledog7]

I thought it was the outer perimeter of the rear of the cylinder, just touching the frame at the star end of the cylinder. Maybe the slight ticking sound I hear when spinning the cylinder isn't frame contact at all but in the cylinder/spindle area; I think I can see light all the way around as I spin the cylinder slowly and look into the gap. Honestly, I can't say for sure it was not doing this before. Lockup is firm. Maybe cylinder has a bit more play on its spindle than before. I took it out while I was replacing the springs and cleaned/lubed it, but everything went back together normally.

Probably nothing.

 

[gotigers]

I went with an Apex reduced power spring kit. My 642 feels exactly the same, other than the lighter pull.

 

[Shimitup]

I'm just wondering if you had the cylinder lock out if you got the spring seated squarely against the pin when it went back in.

 

[beatledog7]

Shimitup, I did have it out at one time but not when I did these springs. I believe I got the spring back in correctly. The cylinder locks up, and I have put rounds through the gun without issues since it was out.

But I will check. Thanks

 

[Shimitup]

beatledog7,

Sorry, I'm not sure what I'm talking about, I think my mind is going. That spring sits against the front of the frame now that I think about it. As I recall it can get a little sideways if you don't tuck it in when you reassemble. I just don't know that that would make the cylinder feel a little loose though. Only other thought could be a little burr holding the side plate up a little.

 

[beatledog7]

Thanks for the help everyone, but I think I was just paranoid. Gun went with me to the range this morning and performed flawlessly with light to moderate handloads (158gr lead roundnose with 3.2 or 3.6 gr Bullseye). Guess there was nothing really wrong.

And the trigger is noticeably better!