jw6k [OP]

I've had a Ruger GP100 .22LR (model 1757) for about a month, now. In that time, I've put 1200+ rounds through it. I shoot almost exclusively CCI Mini-Mags (about 90%). I shoot about 50-100 rounds every other day, and clean it about 2-3 times per week.

Starting with round count about 300, case ejection started getting increasingly more difficult. Now it's at the point where I have to use a folded rag or some other cushion to smack the ejector rod because it requires so much pressure, it's painful to use my bare hand.

I've tried other ammo, and this only seems to happen with CCI; the 3 other kinds which weren't CCI didn't stick like this; however, when I first got the gun, CCIs didn't stick either.

Is there something that's causing this or can it be addressed in some way? It wasn't always like this, but I'm enjoying shooting it less and less the worse it gets.

ngashooter

Welcome to the forum. Please describe your cleaning process, especially how you are cleaning the chambers in the cylinder. Do rounds go into the chambers easily? Is the ejector rod sliding freely? Is there any gunk under the extractor star?

jw6k [OP]

I should mention I'm a beginning shooter, so I could very well be doing something wrong.

My cleaning process is essentially that of the "Tech Tip - Double Action Revolver Basic Cleaning" from the Ruger web site, except I'll run a wet patch through before I use the brush (i.e., to bore & chambers: wet patch, then brass brush, then cycle wet/dry patches until clean; scrub forcing cone, breech face, face of cylinder, extractor star & under with solvent-coated nylon brush).

Rounds load into the chambers easily. If I tilt the loaded gun back, unfired rounds slide right out freely on their own. After firing, once I've jammed the ejector rod hard enough to get it to move, the rod moves quite freely. I have no gunk or build-up under the extractor star, and no problems with the cylinder binding, etc. while firing. Unloaded, a swung-out cylinder will spin quite freely for several seconds unhindered. I do notice some tiny, metallic flakes on my cleaning table after I've cleaned the back of the cylinder, under extractor star area; it looks like some sort of chrome plating?

rick2106

I have a s&w 617, I used a qtip, cut 1 end, inserted cut end in a dremel with a dab of flitz polished the inside of the chambers, worked for me.

*Shoot*

Don't bang on the ejector rod, that's asking for trouble. Check the ejector rod, Them pieces of chrome plating stuff is probably shavings off the rod. You must have a build-up of dirt and metal chips that need to be flushed out with solvent.

blackvoid

If you are using an aluminum cleaning rod, that's where the shavings are coming from. Like my Single-Ten, not all Rugers have had the benefit of someone removing every sharp edge from the cylinder bores. Once I switched to a carbon-fiber rod the shavings disappeared. I have found that some LR ammo leaves much more dirt/fouling in the bores than others. Such fouling can build up in the bores, and be hard to see. When I clean I use a bronze brush chucked in a slow-speed drill for the cylinder bores only.

fixitagain

Make sure you're cleaning the cylinder thoroughly and Frog lube the cylinder. Examine the spent cases especially near the mouth and see if they give you any clues.

wkuban

I have started using a boresnake to clean the cylinder chambers on my .22s, works like a champ. .22 ammo is dirty and can cause sticky extraction. Even in bolt action rifles. Keep chambers clean and no problem.

DenStinett

Amen ! ! !
Plus a little brushing between the Star and the Body of the Cylinder wouldn't hurt
About every 100 - 150 Rounds or so
You gotta remember, as stated above:
22s are the dirtiest, cruddiest Loads around
AND, your Revolver has 33% more Chambers than your average Revolver
That's one-third more crud build-up than most Revolvers
One third more friction during extraction / ejection

jw6k [OP]

For all who've been waiting in suspense, I permanently switched from CCI Mini-Mags to CCI Standard Velocity and the problem went away after a few dozen rounds. No difference in the way I clean the thing. After the switch I decided to stop cleaning the gun for several hundred rounds just to be sure I wasn't going crazy. I now have an extremely filthy gun, but no issue ejecting casings. I also now have several dozen sticks of Mini-Mags for which I've no use.

*Shoot*

That was an easy fix, I'm glad you got the problem solved. Have fun shooting.

danlbobb

Time for a new gun!

BigG

With all due respect, I wouldn't say the problem is solved at all. Unless the manual says to only shoot standard velocity ammo I'd send it back to Ruger. That gun ain't cheap. It should run whatever u put through it.

blackvoid

If the problem is caused by dirty Mini-Mags, then that's where the cause lies. Not the gun.

CtYankee

I had a similar problem right from the start only not with CCI Mini Mags. I noticed that there is a slight bulging of the case just above the rim where the extractor sits. The diameter of the extractor is slightly greater than the diameter of the chamber and the case appears to be bulging into the extractor - check your cases. Standard velocity rounds have less chamber pressure than high velocity and this may be related. In my instance, using only CCI Mini Mags solved the problem, obviously that isn't working for you; try different brands of ammo and see what the results are. I've checked and found the same bulge on cases fired out of S&W 617's only those guns didn't have the sticking problems. You might also check with Ruger and see what they know.