Can spring compression damage a magazine?


  1. Physics 101, springs by definition are meant to be compressed, what wears out springs…again, physics and metallurgy, is compression and decompression regularly. ..regardless. eh,

    There is a reason I dont use berettas 😉

    • There are actually two failure modes for springs. One is fatigue, which is the cycling over and over again. The other is creep, which is a gradual “relaxing” of the metal over time in response to stress (compression due to remaining loaded).

      The author here is discussing creep. It does occur in springs under certain circumstances to one degree or another. It depends on the material used to make the spring, the heat treatment of the spring, the geometry of the spring, and how heavily the spring is loaded.

  2. 7 20 round ar mags found in a bandoleer compressed 20+ years, fired flawlessly mags worked fine, and still using them.

  3. I knew I liked Glocks for a reason. Lol
    On the other hand beta mags can be left loaded indefinitely per the manufacturer. This is due to a low torsion spring. Hmmm 100 rnds…… I leave 99 in it. You should never fully load a magazine to maximum capacity. Just my 2 cents.

  4. WOW I was just thinking about this yesterday. What are the odds? I have a Springfield XD 40 that I have kept loaded for like 13 years I think. It still works great.

    Thanks for another great post.

  5. I like how this guy “allows” you to kick yourself for your own actions.
    * I change out quick-grab mags for my AR’s
    * I will swap mags in my handguns
    * My POOR Rem-870 HD shotgun has carried a heavy burden of staying loaded for long times on end.

    Thanks M.D. for another great video!

  6. Chuck Findlay says:

    I have a friend who’s father had a German Luger loaded since the early 1960’s as it was his bedroom gun that sat in a drawer in the night stand. It worked perfectly every time we shot it.

    It’s still loaded to this day, so I don’t know that spring fatigue is the issue it’s made out to be.

    I’m sure metallurgy comes into play, but I’m around a lot of guys with lots of guns and I can’t remember anyone ever having an issue with weak springs.

    Not saying it can’t happen, it’s just in 35-years (many of those years working at a gun shop) I haven’t seen it.

  7. Ok… after watching the video and reading the comments, there’s a lot to consider… the quality of the metal… the amount of use… fully loaded or not.
    I have 12 mags for my Colt AR but only keep one with rounds in it and only at 10 rounds. Same goes for my 40 S&W… Every few months the “light comes on” and I remember that “time to swap out the mags” as I’ve always been told and I do that. Again just one each and half capacity. The 22, 12 guage, 30/30 and 308 are not loaded. I’d like to think that if the SHTF there would be enough time to get things loaded. I guess it’s a matter of what one considers “it hitting the fan”. Should I keep them all loaded or not?
    I’d like to be more vigilant on all of this but I’m single and with work and home etc… I’ve got too much going on…
    Regardless… the one I don’t worry about is the 357 S&W. Just keep it clean with a dozen speed loaders at the ready.
    So if I may ask … any thoughts about I should keep all of them loaded or just the ones mentioned?
    I’m on my own way up here … neighbors don’t think about prepping and SHTF…
    Thanks for the help

  8. I always keep half mags loaded, half unloaded, and a separate set for range use (off brand/after market)

    As i tend to have 10 to 20 mags per firearm…this means go bags are always ready…I also have in vehicles, water tight quick fix kits/ bolts for ars/springs etc for glocks and all that and in two main bugout locations…full replacements and spares of everything…

    Took 15 years to get here…but, heck, worth it!

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