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Will a worn mag spring cause nosedive?

539 Views 12 Replies 7 Participants Last post by  Uncle Bob
Curious if my thinking is correct on this....

Reliable gun (9mm 1911) for thousands of rounds, reliable mag since new (3-ish years) noticed over last month or 2 that the mag has gotten very easy to load, Spring is clearly shot/weak. New springs ordered and not yet installed. Yesterday mag started to allowing nosedive on reload when loaded to capacity. (it is a +1 mag) Happened 3-4 times between yesterday/today. (ammo is same FMJ that I've been running previously)

I assume that the weakened spring no longer exerts enough force keep the rounds against lips at upward angle?
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Curious if my thinking is correct on this....

Reliable gun (9mm 1911) for thousands of rounds, reliable mag since new (3-ish years) noticed over last month or 2 that the mag has gotten very easy to load, Spring is clearly shot/weak. New springs ordered and not yet installed. Yesterday mag started to allowing nosedive on reload when loaded to capacity. (it is a +1 mag) Happened 3-4 times between yesterday/today. (ammo is same FMJ that I've been running previously)

I assume that the weakened spring no longer exerts enough force keep the rounds against lips at upward angle?
Yes. You are correctly assessing the mag and spring. Nose diving rounds could also be caused by a spring being installed the wrong way. But if you have not disassemble and reinstalled a spring, that's not likely the culprit.

Spring fatigue happens with use. No way around it.
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I’d swap out both magazine springs and recoil springs. Might as well swap the firing pin spring out as well. Sounds like a lack of maintenance since the gun is otherwise reliable.
Magazine spring worn or backwards. Also dirty magazines can cause this.







Fix the magazine first before worrying about anything else
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Sounds like a lack of maintenance since the gun is otherwise reliable.
...lol OK, lack of "range only mags" maintenance.

Gun springs changed on intervals. Gun cleaned after every shooting day. This was my 1st 9mm 1911- had no idea how long range mag springs would last.... CC mags aren't mixed in for range use.
Doubtful. I would make sure the tube is clean and follower is in good shape. 9mm mag springs don't have to be super heavy-a 9mm stack weighs a lot less than a stack of 8 45 ACP for example.
New springs installed. Geeze- by comparison, the old ones were about like 22lr mag springs! ...lol
A good reason to not buy mags with welded on bases.
A good reason to not buy mags with welded on bases.
May I ask what makes you believe this?
May I ask what makes you believe this?
Changing springs on welded base pads never worked out well for me. Wilson, DW, and Colt have been no issue, their pads on mine are removable.
Changing springs on welded base pads never worked out well for me. Wilson, DW, and Colt have been no issue, their pads on mine are removable.
You can still change springs & followers on fixed plate mags. It takes an extra minute or two and you have to pin the spring compressed to remove the follower 1st. A 3rd hand would be nice for this as well. ...lol
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Changing springs on welded base pads never worked out well for me. Wilson, DW, and Colt have been no issue, their pads on mine are removable.
It’s easily done…..I prefer fixed plate mags for carry
May I ask what makes you believe this?
When Checkmate first got the 1911 magazine contract, the first two runs of 1911 magazines were seriously flawed. Load up 7 rounds and the bottom would blow out. they were also known for a few other problems.

Guy from Aberdeen was sent to Checkmate to find the problem. As it turned out the guy on the grinder who was smoothing the welds was taking too much off weakening the welds. This is true, a lot of those magazines wended up on the surplus market, and I did end up with about 5 of them. All got tossed.
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