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Rimfire Firearms .22, .17 and other Rimfire Handguns and Rifles

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  #1  
Old 12-24-2011, 11:52 AM
Khafre Khafre is offline
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Question Keeping .22 Pistol mags loaded. Any problems?

I was just wondering if there are any detriments associated with keeping a .22LR pistol magazine, such as a Ruger Mk III, loaded for a couple weeks or more. I know that the general consensus is that keeping a magazine loaded will not adversely affect the spring tension. My question is inquiring about the actual cartridges themselves. I notice that the cartridges rest on each other with the rim of the top cartridge resting on the case of the bottom cartridge. Will this sustained pressure on the rims cause any reliability issue with the primers?
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Old 12-24-2011, 4:32 PM
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thenodnarb thenodnarb is offline
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If anything, the feed lips may bend or break but I doubt it on a mk III. I did have a plastic black dog mag break the feed lips when left loaded(for ar 15 conversion).
And I'm sure you'll hear this: that .22s don't have primers but rather a priming compound at the bottom of the case. It shouldn't cause any problems.
FWIW on my last outing I left 3 MKII mags loaded. I'll be shooting them monday(only a week later) so I don't think I'll have any problems.
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Old 12-24-2011, 4:57 PM
Ibefuz Ibefuz is offline
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I've left my mp15-22 mags loaded for a couple months a few differant occasions and haven't had an issue with any malfunctions of any sort.
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Old 12-24-2011, 5:44 PM
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Turo Turo is offline
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You won't have any issues leaving 22lr mags loaded. I leave one if mine loaded all the time, it's been about a year now and no problems.
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Old 12-24-2011, 6:48 PM
Khafre Khafre is offline
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Thanks guys.

I thought that there would not be any problems, but it is always good to learn from the experience of others.

My main concern was that the rims contain the priming component and that is where a majority of the pressure is being exerted unlike a centerfire cartridge where the rounds rest along a large portion of the case relieving pressure in comparison to a rimfire magazine.

Also that is good to know about the reliability of plastic mag lips.
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