Originally Posted by shootitout
Hay everyone I was just wondering do firing pins really break because of dry firing? Also dose keeping mags loaded damage there spring?
...well you sure know how to stir up a bucket of worms!!
There is only one for sure way to safe guard against damaging your firing pin, from dry firing.......you know....don't do it. On the other hand, your firing pin could be damaged from shooting your gun, poor maintenance, or poor manufacturing! The reason, or cause of firing pins being damaged from dry firing are many, but basically what is the design of the firing pin, the design of the firing pin holder, and the quality of the pin material. These are all pretty difficult for us layman to determine or measure, so we are better at examining the history of a firearm design and consulting with the guy who makes it. For example, back in the 60-70's the firing pins in Star auto pistol were very weak and many broke from the repeated pounding of dry firing even when using a snap cap device. However I have dry fired 1911's, S&W 38 revolvers, AR-15, and many others, thousands of times without a firing pin failure.
If you are concerned with a firing pin failure, and you should be, we all should be, checking the pin should be a part of your function check after cleaning. This doesn't assure the firing pin will not let you down when you most need it, but it may prevent you from using or carrying a gun, with a broken pin, in the event it broke on the last round you fired at the range. This has happened, I speak from experience!!!
Spring design is a science industry all it's own, as I'm sure any of the engineers here will attest to. I have had failures from magazine springs left compressed for extended times. I have had magazine spring failures from springs I just plain wore out using them. I think it has more to do with the magazine spring compression design, the quality of the spring, and the maintenance. Springs are designed to be compressed and released.....that's there job, to provide flexibility, not static support (oh the engineers are going to jump on that one!). I don't think manufactures design magazine spring to fail, but I'm not convinced they all have done a good job of designing or using quality manufacturing either.
If you compress a spring past it's design, I think we should expect some failure. And, if we use the spring, compressing and expanding, sooner or later I think a spring is going to wear out and fail. With that said, I haven't had too many problems either using or storing magazines lately......maybe they are making them better now, or maybe I finally am buying better quality magazines. Whether you leave your magazines loaded or empty, or partially full......and use them a lot.....they should give you a long service life.
As others have already stated.....stick with the magazine you get the best service out of, and keep a couple or half dozen, new ready to replace those that fail or whenever you are suspicious of a pending failure.
The average shooter probably has 2-3, maybe 5 magazines for their gun. I have that many dozen magazines for each gun. Magazine are no kidding matter.....they are the feed supply that offer the advantage of using or carrying that auto-loader.
Anyway.....nothing above scientific.....just the opinion of an Old Redneck.