Ammo in the magazine

[coachray]

Will leaving a magazine loaded for an extended period of time weaken the mag spring or cause any other problems? My mags are for a SD9VE.

 

[Muss Muggins]

Short answer: No. Brace yourself. Longer answers are coming . . .

 

[Arik]

NO


(Thanks as short as I can make it)

 

[NYlakesider]

A bit longer----------------------No

A few years ago I fired .45s that were loaded in the mid 1940s in 2 mags, both ammo and mags worked perfect!

 

[bigwheelzip]

And, uhh, no.

 

[coachray]

I thought so, but thought I would ask people with more knowledge than me. Thanks for the replies.

 

[fedoff]

(Long version)
No. Fired Ar 15 ammo that was in mags for 10 yrs. No malfunction. New mag springs are even better than they were 10 yrs ago.

 

[Hapworth]

If the spring is properly made, the weakening that will occur from extended compression will be so minor as to be insignificant.

However, if there's a flaw in the spring's construction (typical in lousy makers, and happens from time to time with the good ones), extended compression (and any other use) can weaken the spring to a dangerous degree.

Run your new, carry, and stored loaded mags every so often to make sure they're functioning properly and you're good to go.

Repeat compression-decompression cycles are what ultimately weaken mag springs, not extended compression -- again, if the spring is properly made.

Mags (or at least their springs where replaceable) are probably best viewed as disposable items if you run them a lot.

 

[ISCS Yoda]

Long answer.

Modern gun. No.

Vintage gun. Maybe.

Really old gun. Likely.

There is a lot more to this subject but NO is the correct, short reply.