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Mec-Gar Magazines and sighting in my Standard Model

This is a discussion on Mec-Gar Magazines and sighting in my Standard Model within the Ruger Rimfires forums, part of the Pistol & Revolver Forum category; Shortly after getting my ca. 1955 Standard Model a couple of weeks ago, I ordered a Mec-Gar Mk I magazine off eBay. It arrived late ...


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Old May 18th, 2017, 06:33 AM   #1
 
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Mec-Gar Magazines and sighting in my Standard Model

Shortly after getting my ca. 1955 Standard Model a couple of weeks ago, I ordered a Mec-Gar Mk I magazine off eBay. It arrived late last week, so I took it out early this week, with the dual purpose of adjusting the sights. The first few magazine loads (using Remington 40 grain solids, not the bulk pack HPs) resulted in a lot of failures to feed, but suddenly that stopped, and the Mec-Gar mag worked flawlessly thereafter. No idea why the FTFeed problem stopped so abruptly.

I went through three boxes of ammo trying to get the sights adjusted, turned out to be a bigger job than I anticipated. To begin with, it was shooting about 4" low and about 3" left from POA at 50'. It was very difficult to move the rear sight in its dovetail to the right, but I finally was able to do it. After getting the windage more or less correct, by trial and error I filed the front sight down a little, fired a few rounds, and filed some more, continuing until I had pretty good results with a six o'clock hold on the black at 50' using a sand bag support from a bench. That Ruger is definitely not a target pistol. I couldn't get any better than around 2" (5-shot) groups at 50', disappointing, but I guess I will have to live with it.



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Old May 18th, 2017, 08:26 AM   #2
 
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2" groups a 50' is really not too bad. Good shooting!

My 2 mark pistols are tapered barrels, like your standard. Something I've found is precision is difficult with the factory sights. Filing a little taper on the sides of the front sight makes it easier to determine where the center of that sight is. Then adding a small amount of bright paint or fingernail polish makes it easier to see against a black bullseye. These 2 things combined would likely drop your groups by around 1/2" at that range. More precision then that would need better ammo.

The MecGar mag probably had a burr in the button track that wore off after a bit off shooting. I'm glad it's working for you now!
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Old May 18th, 2017, 12:15 PM   #3
 
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When I first got the SM, some previous owner had put a small dot of white paint on each side of the rear sight notch, and also put a white dot on the front sight blade. I had a hard time seeing the sight picture very well and so I covered over the whitened front sight blade with a black magic marker. I left the white dots on the rear sight alone. I have always used a six o'clock hold on the target black center, and the blackened front blade made that easier. But it didn't help grouping very much. I can't say I liked the SM's trigger pull, but I don't believe it affected grouping from the bench. But maybe it did.

What is this Volquartsen sear I have seen comments about? Is it something worthwhile (or even available) for an early SM? From what I have seen, many seem to have problems with the installation. I'd also like to change the small bottom magazine catch for a larger one, it's hard on your thumb to be removing magazines a lot, as I was doing.

Last edited by DWalt; May 18th, 2017 at 12:30 PM.
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Old May 18th, 2017, 02:35 PM   #4
 
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The Volquartsen sear is super smooth and typically reduces trigger pull to about 2-2.5 pounds. It should fit in your SM just fine. They also make an "extended" mag release for the MKII (same release as the SM) that will make it easy on your thumb. There are several other companies that make them also, with differing handle designs. Ranch Products, Majestic Arms, and a few others.

Where you might run into problems would be getting a replacement trigger and installing it. Most adjustable aftermarket triggers are skinnier than the SM trigger to allow for the auto bolt stop that came out in the MKII models. Also, the trigger pin in the SM is held in with an E-clip where most later models have a detent spring. Clark Custom is where I'd look first if I wanted an adjustable SM trigger. It probably will only have the over travel screw though. You could also modify your current trigger, if you wanted.
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