Ruger Mark 3 Light Primer Strikes

204dude · Post by **204dude** » Tue Jun 09, 2009 2:53 pm

I ordered the vq extractor. Will keep you posted when I install and test it.

204dude · Post by **204dude** » Thu Jun 11, 2009 4:38 pm

Well I ordered the vq extractor but decided to throw in the towel anyway before trying the new extractor. I called Ruger and they sent a call tag. It is on the way to them now.

I put all stock parts back in including magazine disconnect, factory sear, loaded chamber indicator and factory hammer bushing. I tried the pistol with all factory parts in and still had light strikes. I can say without a doubt that it was not the vq sear.

I still think it is the magazines as they sit very very loose in the mag well. How do other Mark 3 owners magazines fit. My Mark 2 fits very snug in the mag well.

I shall report back when the hopefully fixed gun comes back from Ruger.

Happy Shooting.

Post by **Bullseye** » Thu Jun 11, 2009 10:12 pm

I've seen them fit snug and some fit loose but they all work the same - usually. We'll see what Ruger has to say after they work on it.

R,
Bullseye

204dude · Post by **204dude** » Mon Jun 22, 2009 4:16 pm

Well the Mark 3 came back from Ruger today. The only notation on the workorder was that they replaced the trigger stop screw. They said they tested the gun. I have yet to try it out. Probably won't get to try until this weekend.

I will keep you posted.

Thanks

Post by **Bullseye** » Mon Jun 22, 2009 6:23 pm

If the stop was causing the sear to not clear the hammer as it dropped the resulting drag on the hammer body would cause light strikes. That would also explain the rubbing mark on the hammer you had in your pictures earlier in this thread. Hopefully this will solve your problem.

R,
Bullseye

204dude · Post by **204dude** » Thu Jun 25, 2009 10:50 am

Well yesterday I got a chance to test the Mark 3 as it came back from Ruger. I ran 80 rounds of federal bulk thru it. I had 1 dud but put it back in the gun and tried 2 more times and it still did not go bang. I am convinced since the round had 3 dings around the rim that it was a bad round. The primer striked appear deeper now.
Hopefully this fixed the problem.

Thanks for all the replies.

204dude

FourCornerm'n · Post by **FourCornerm'n** » Fri Jun 26, 2009 9:01 pm

Coming in way late to an interesting conversation. My response is only anecdotal compared to the experienced expert.

Perhaps you will see improvement by installation of the VQ extractor. I had a very similar problem. Though not as often as you've had, still often enough to make feeding and ignition somewhat testy. Installed the VQ and have not had the problem even once in many thousands of rounds in my two Mark II era 22/45's. Good luck.

---------------------------------------------------------------------------------------------------------------------------------

Whoops. Not only came in late, also didn't use my noggin. Looks like everything's probably copasedic. Good shooting.

45dave · Post by **45dave** » Tue Jun 30, 2009 10:17 pm

I had a problem with my mark 2 that would not ignite rounds where the cartridge had it's rim on the thin side. I would get a shallow firing pin hit but no ignition.
In my case I saved a number of the cartridges that would not fire even with multiple tries and measured the thickness of those rims and found out they were on the thin side. My solution was to reduce the head space on my bolt and the problem went away. If your gun is still acting up with all you have done, you may want to check that.

204dude · Post by **204dude** » Fri Jul 10, 2009 10:37 am

Well I now have over 250 rounds thru the mark 3 without cleaning and not one light strike. I think we are now out of the woods.

Thanks for all the suggestions.

blue68f100 · Post by **blue68f100** » Fri Jul 10, 2009 2:12 pm

That's good news.

What ammo were/have you testing with?

204dude · Post by **204dude** » Sat Jul 11, 2009 12:21 am

I was using Federal Champion and Federal 550 round 36 grain copper plated hollow point value pack.

You gotta take what you can get with ammo now days.

StretchMaK · Post by **StretchMaK** » Wed Aug 19, 2009 7:46 pm

Please forgive the late reply but what part in the MkIII parts list is the "trigger stop screw"? NVM I found it during the install of my VQ trigger and sear. It is not listed in the parts list.

Post by **Bullseye** » Thu Aug 20, 2009 9:51 am

It's in the upper front face of the factory trigger. When installed in the frame the screw is not accessible. To adjust it one has to partially remove the trigger and adjust with an Allen wrench - like shown in the picture below.

R,
Bullseye

204dude · Post by **204dude** » Sun Dec 13, 2009 6:27 pm

I wanted to give an update. After sending the gun back to Ruger and they replaced the trigger stop screw the gun functioned flawlessly for about 1000 rounds - then started to light strike just like before.
I called Ruger and they sent a call tag. They said "we take it very seriously when a gun comes back a second time for the same problem."
They had my gun back in my hands in about 10 working days.

The work order is as follows:

Barrel/Receiver Assembly - Repaired
Ejector -Repaired
Extractor - Replaced
Firing Pin Stop - Replaced

As far as the Barrel Receiver Assembly it looks like they dremmeled out the frame just behind where the slide stop sits in the frame.

I have put about 200 rounds thru it since coming back from Ruger and it is flawless so far.

I don't know what the problem was but I suspect the magazine was not fitting in as tight as it should but I could be all wet.

We are good for now. I don't go to the range without this gun as it is so much fun to shoot.

Post by **Bullseye** » Sun Dec 13, 2009 7:51 pm

I suspect the barrel/receiver repair was re-reaming the chamber.

R,
Bullseye

GunTalk-Online.com

Ruger Mark 3 Light Primer Strikes

thin rims?

Well the light strikes started again!