Ruger GP100

[michaelhk]

I have a problem after the gun is a bit dirty in closing the cylinder on a reload. It can be sticky to the point of not allowing it to be closed at all. I have been using lead, but will switch to jacketed, I am sure that will help. Is there any way to correct this problem.

[Bubber]

First thing I would check is to see if there is any debris under the extractor. A couple of flakes of unburnt powder can cause the sympton you suggest. Does it go away after cleaning the cylinder? What kind of powder do you use? Some powders are prone to being dirty especially if not enough pressure is present to burn the powder effiiently. There may be other factors also but look at the simlest first. later rdd

[michaelhk]

First thing I would check is to see if there is any debris under the extractor. A couple of flakes of unburnt powder can cause the sympton you suggest. Does it go away after cleaning the cylinder? What kind of powder do you use? Some powders are prone to being dirty especially if not enough pressure is present to burn the powder effiiently. There may be other factors also but look at the simlest first. later rdd

Yes cleaning does make the difference. I was using Win 231 with lead bullets. It started having the problem after about 100 rounds. I will check carefully under the extractor Thanks

[Bubber]

First thing I would check is to see if there is any debris under the extractor. A couple of flakes of unburnt powder can cause the sympton you suggest. Does it go away after cleaning the cylinder? What kind of powder do you use? Some powders are prone to being dirty especially if not enough pressure is present to burn the powder effiiently. There may be other factors also but look at the simlest first. later rdd

Yes cleaning does make the difference. I was using Win 231 with lead bullets. It started having the problem after about 100 rounds. I will check carefully under the extractor Thanks

Michaelhk, What bullet weight and what other powder do you have available? A friend of mine, Roger Reid, uses his Ruger to compete in ICORE and IDPA. He has gotten pretty good with them. I think he uses Solo 1000 and the 160 grain Billy Bullet. I can check with him if you are interested. Good luck later rdd

[michaelhk]

First thing I would check is to see if there is any debris under the extractor. A couple of flakes of unburnt powder can cause the sympton you suggest. Does it go away after cleaning the cylinder? What kind of powder do you use? Some powders are prone to being dirty especially if not enough pressure is present to burn the powder effiiently. There may be other factors also but look at the simlest first. later rdd

Yes cleaning does make the difference. I was using Win 231 with lead bullets. It started having the problem after about 100 rounds. I will check carefully under the extractor Thanks

Michaelhk, What bullet weight and what other powder do you have available? A friend of mine, Roger Reid, uses his Ruger to compete in ICORE and IDPA. He has gotten pretty good with them. I think he uses Solo 1000 and the 160 grain Billy Bullet. I can check with him if you are interested. Good luck later rdd

The lead ones wre 158 gr. 3.9 gr of Win 231. I just picked up 130 gr jacketed. I was going to use 4.8 gr of Win 231. I have never used this gun in comp. I was hoping to use it in IDPA Thanks rdd Mike

[Revopop]

231 is filthy in a revolver. I'd bet just about anything you're problem is unburnt powder under the star.

[Toolguy]

It could also be lead building up between the face of the cylinder and back of the barrel.

[iron hands]

It could also be lead building up between the face of the cylinder and back of the barrel.

Give your ruger a good cleeing. I have a gp100 that now has a spring kit in it only shot 158 swc in 38 and 357,My powders are red dot and bullseye yes thay are bouth dirty even with mag primers. If I wanted my guns to look like bran new then I wouldent be shoting. Had not had eney problems with mine at all. If you dont mine a dirty gun after a day of shoting try some diferent powder. oil the crain just one or two drops

[michaelhk]

Thanks for the ideas. Will try all Mike

[johnbh]

I was also having the same problem,the cylinder finaly got stuck, could not release it,I

found out that the latch screw was working itself out.

[Chris Christian]

Checking the cylinder latch screw should be normal cleaning/maintenance on the GP-100. It's the only screw on the gun that can cause problems. A large flat tip jewelers screwdriver is best. It will back out on you. If that is not the problem, and you are shooting lead bullet reloads.... (1) check your sizing die and make certain you are getting full length case resizing, and that your crimps are smooth. (2) Check your chambers to see if you are building up a big lead firing ring. If so, scrub it out. If the ring is massive, brush some Kroil into each chamber and let it sit overnight, then hammer it with a stainless steel spiral brush. (3) make certain your primers are seated fully, slightly below flush... a high primer can... maybe... cause problems. Unburnt powder under the extractor star is a possible problem, and in light loads with 231 (or HP-38) it might be a factor because you may not be getting a full burn. But, those are my two primary powders for .38 Spl 125PF loads with 158 grain lead bullets, and at the 4.6 to 4.9 charge weights I'm using (that much is needed to make 800 fps minimum ... 125 PF... in my four inch GP-100) it has not been any kind of a problem. I would look at cleaning and reload quality first, because the GP-100 is one rugged and reliable revolver.

Chris Christian

[signsrup]

Had the exact same issue with a model 64 during a steel match. 231 flakes under the ejector made the gun hard to close, I got flustered (on the clock naturally) and withrew. I felt really stupid about 1/2 hr later when I diagnosed the problem, although it would have been hard to fix it on the clock.

[snertley]

231 is filthy in a revolver. I'd bet just about anything you're problem is unburnt powder under the star.

I use nothing but 231 in my 610 and have never had an issue with unburned powder in the last 10,000 rounds over the last 3 years.

[wide45]

231 gave me unburned powder under the star of my 625. WST did not.