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Discussion Starter #1
a new MKII was received for Christmas. It has been fired about 400 times; has been field-stripped twice and thoroughly cleaned; four different brands of ammo (LR and Hi Vel LR) have been fired. It jams (stove pipe) about every 5th round. Does anyone have a suggestion as to how to solve this problem?
Baldy
 
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a new MKII was received for Christmas. It has been fired about 400 times; has been field-stripped twice and thoroughly cleaned; four different brands of ammo (LR and Hi Vel LR) have been fired. Does anyone have a suggestion as to how to solve this problem?
Baldy
You didn't cite a specific problem in the above post that I can see. If you are referencing any of the various feeding issues that can sometimes happen when shooting bottom feeders, I would suggest using Winchester Dynapoint .22lr ammo. I have a MK2, a 22/45, a S&W 422, and all have had various feeding problems at times. I switched to the Dynapoints and 2000 rounds later I have not had a single malfunction of any kind in any of the three pistols. I have also shot them in many other pistols at the range of various makes/models with no malfunctions of any kind.
 

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Discussion Starter #3
Thanks for your response. I made an error by not posting problem and reposted about 5 minutes later. My MKII stove pipes. Your suggestion of Win. Dunapoints will be tried. Baldy
 
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I bought a new Ruger MKII standard 6" a few years back. It also had a tendency to stovepipe. Pulling back its bolt with the hammer down required more force than other MKIIs I had fired. It seemed like the recoilspring and mainspring needed to be "broken in". For the first several hundred rounds I fired only "hot" ammo (CCI stinger and CCI mini-mag). This ammo functioned fine (I used this ammo because it was available at a nearby store). I stored my MKII when not in use with the bolt locked back, to compress the springs as much as possible (I have no proof this works, it just seemed that it wouldn't hurt). About a month later (after 500-600 rounds), it was reliable.

Hang in there, and shoot it a lot.
 

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Thanks for your suggestion. Ruger was contacted and Ruger requested pistol be returned for evaluation. It was returned and I'm now awaiting for it to be returned to me.
 

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Were these MKIIs or MKIIIs? Ruger just stopped producing the MKII(I think...)and began producing the MKIII with all its safety stuff.
 

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Hi there Baldy,

I currently have a Mark II, pristine and new in the box. But I have owned at least two prior to this one.

You say that you have a stove pipe with each 5th round consistantly? I would speculate that it is a magazine related problem.

I understand that you have returned the firearm to Ruger and have gotten it back?

Should you ever have this problem again, try soaking the magazine in solvent overnight. I've done this before and its helped with a similiar problem with other semi-automatics.

I apologize for the late reply.

Chris
 

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Discussion Starter #9
Thanks, Chris, for your reply. MKII returned to Ruger 1/18/05 and it has not been returned. Two magazines came with pistol and both were tried. Both were also returned to Ruger. Baldy
 
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