686 ejecting issue?

[HooVooLoo]

Hi all. Sorry if this has been asked before, but I noticed an issue with my 686 and am wondering if it is a common problem, seen before...

686 7-shot, using semi-wadcutter .357 and FMJ .38 special +p loads.

After a few cylinder loads, one of the shells would not eject. The gun was hot at this point, and it seems to me that because of the heat, cartridge expansion was preventing the case from being ejected when the ejector rod was used. I had to bang the rod down on the table to get the casing out of the cylinder.

Was this issue caused simply because there were too many rounds too fast, heating up the gun, or should the wheel of this gun be able to eject empty casings no matter how hot they are?

 

[EddieCoyle]

It's not a heat problem. It's a residue problem.

The .38s are shorter than the .357s. When you fire .38s, a ring of crud forms just in front of the case mouth in each chamber. When you then fire the longer .357s, the cases expand into this crud and you end up with sticky extraction. It's worse in a 7-shot than in a 5 or 6-shot revolver.

 

[Mike-Mike]

It's not a heat problem. It's a residue problem.

The .38s are shorter than the .357s. When you fire .38s, a ring of crud forms just in front of the case mouth in each chamber. When you then fire the longer .357s, the cases expand into this crud and you end up with sticky extraction. It's worse in a 7-shot than in a 5 or 6-shot revolver.

Eddie, Why is it worse in a 7 shot??

 

[Mike-Mike]

GUESS:

The distance from the center of the extractor rod is greater therefore causing the shells to be extracted at a tiny angle due to flex in the lifter?? and the fact thats it's an extra casing??

 

[EddieCoyle]

Eddie, Why is it worse in a 7 shot??

Because 7 stuck cases are harder to push out than 5 or 6.

If you really want a good example of this, try firing a bunch of .22 shorts out of a 10-shot S&W 617, followed by some .22LR.

 

[Mike-Mike]

Because 7 stuck cases are harder to push out than 5 or 6.

If you really want a good example of this, try firing a bunch of .22 shorts out of a 10-shot S&W 617, followed by some .22LR.

HAHA, Why are wrinkled clothes heavier in a suitcase then presses clothes?

Answer in white..



Cuz, you got to pack an Iron!

 

[fanocool]

Originally Posted by EddieCoyle
It's not a heat problem. It's a residue problem.

The .38s are shorter than the .357s. When you fire .38s, a ring of crud forms just in front of the case mouth in each chamber. When you then fire the longer .357s, the cases expand into this crud and you end up with sticky extraction. It's worse in a 7-shot than in a 5 or 6-shot revolver.

I have wondered about the same issue as HooVooLoo with regard to my GP100 and an explanation similar to Eddie's was given to me. However, yesterday at the range I fired .357 first and from my freshly cleaned Ruger experienced this same condition. The gun is realtively new (to me) and the only ammo I have run through it so far has been aluminum cased blazer, to which I had attributed this to thinking the the aluminum was more prone to expansion versus brass cased cartridges.

 

[EddieCoyle]

I have wondered about the same issue as HooVooLoo with regard to my GP100 and an explanation similar to Eddie's was given to me. However, yesterday at the range I fired .357 first and from my freshly cleaned Ruger experienced this same condition. The gun is realtively new (to me) and the only ammo I have run through it so far has been aluminum cased blazer, to which I had attributed this to thinking the the aluminum was more prone to expansion versus brass cased cartridges.

Does it eject better when it's a bit dirty?

If so, read this thread. Ruger DA revolver chambers tend to have a rougher finish than S&W. The discussion in that thread might explain it.

 

[Ray-500]

It's not a heat problem. It's a residue problem.

The .38s are shorter than the .357s. When you fire .38s, a ring of crud forms just in front of the case mouth in each chamber. When you then fire the longer .357s, the cases expand into this crud and you end up with sticky extraction. It's worse in a 7-shot than in a 5 or 6-shot revolver.

Had (have) the same problem with my 627, 8-shot. Cleaned it to get rid of mfg. residue and took it out to zero. Very first rounds would not eject normally...not a question of dirt. Had to rap ejection rod on bench to get empties out. Next eight got worse. Put it aside for now while I'm doing other things.

Will take apart and clean again....have only fired 16 rounds using new, factory 38 spcl....and will try .357 of a different mfgr. to see if its the same. If the .357's act the same way as the 38's, there has to be a problem.

Grin, the first 8 out of a clean gun should not have to be banged on a bench to eject.

 

[EddieCoyle]

Ray,

Click on the link in post #8 for a likely explanation.

 

[Ray-500]

Ray,

Click on the link in post #8 for a likely explanation.

Got it.....thank you.

 

[strangenh]

I keep a little Black & Decker power screwdriver and a hex chuck adapter around for cleaning the .38Spec rings from the .357mag chambers. Saw a gunsmith at a rental range do that trick with one of their range 686s.

I just load the chuck with a .40 brass brush, put in some cleaner (like MPro 7), and power out the rings (be very careful if your brass brush has a steel core!). I then use a mop and finish with a dry patch to ensure the chambers don't have any residue left.

Only need to clean like that rarely.