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Thread: Ruger Mark I

  1. #1
    Jon54 is offline Junior Member
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    Ruger Mark I

    I'm hoping someone can help. Some 36 years ago, I purchased a new Ruger Mark I for simple plinking purposes. About 30 years ago, my father in law "borrowed" it. Well, he is now in his mid-80s and his health (and mind) aren't that good anymore and I figured I better get my pistol back should something happen to him and an in-law wouldn't know that the pistol was really mine. I took it to my range and had someone there completely take the pistol down and clean it thoroughly.

    The pistol still looks to be in as new shape. The first magazine through the gun shot flawlessly. On the second mag, the first shell wouldn't cycle into the chamber. After a while, I got it to load properly and all subsequent shots from that magazine fired fine but the first round issue seemed to be a steady pattern. Any ideas? I thought maybe the magazine spring could be weak so I've ordered a couple of new Ruger mags. Any other ideas before I send it off to a gunsmith?

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  3. #2
    TedDeBearFrmHell's Avatar
    TedDeBearFrmHell is offline Senior Member
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    my guess is that you are using a soft lead nose ammo, and its hanging up on the feed ramp.... with a full magazine it is tight and keeps the nose down as the first round feeds..... subsequent rounds are a lil looser and the nose rises enough to get over the lip.

    my MkII does the same, i loves jacketed, hates soft lead

  4. #3
    prof_fate is offline Member
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    My mkI is the same as well.

  5. #4
    DJ Niner's Avatar
    DJ Niner is offline HGF Forum Moderator
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    If it worked well initially, then it's possible that they might have cleaned it but didn't lubricate it (or lube it enough). As soon as you got some fouling and/or bullet lube on/in the gun, it started to hang-up. Make sure the gun has a coating of lubricant on all the moving parts, and I'd even go so far as to put a drop on the feed ramp (then wipe off any excess).

    You might also want to try a few different types/brands of ammo, as some guns can be a bit picky about functioning properly with certain loads or bullet styles. I'd recommend CCI ammo in general, and their less-expensive Blazer .22 LR ammo is pretty decent stuff, full-powered yet reasonably priced. It's one of the few non-plated-bullet .22 loads that I will recommend, and it has actually worked very well in a few guns that wouldn't function reliably with almost anything else.

    Finally, the early Ruger MK-I magazines sometimes needed a bit of "tuning" in the feed lip area. The little tabs on either side help guide the bullet up the ramp, but if they are too close together, they hold the bullet too tightly, and can be a source of feedway stoppages. Load the mag, and push a few rounds out with your thumb, pushing the nose upward slightly with your other hand (as they do when they hit the feed ramp); if they seem to stick or hang-up as the bullet passes between the tabs, very carefully bend them outward JUST A TINY BIT, using needle-nose pliers or something similar, and then test-fire the gun/mag combo with live ammo.
    "Placement is power" -- seen in an article by Stephen A. Camp
    (RIP, Mr. Camp; you will be remembered, and missed)

  6. #5
    buckklier is offline Junior Member
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    Hi, I bought mine in the mid 70's used, and had the same problem, I took it back, and they found a burr some place in the gun, and removed it. Look at the feed ramp, and check the clip over well, clean it, lube it well, I had great luck with WD40. Also my gun loves CCI Stingers!

  7. #6
    TomC is offline Member
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    In addition to doing a polish job on the feed ramp, you might want to consider how you are releasing the slide for the first shot. If you are releasing it by using the slide lock, you may not be giving the slide enough momentum prior to hitting the first cartridge to load. Try pulling the slide all the way to the rear and releasing it to load the first round and see if that works.

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