Live round ejected with previous spent casing - ideas?

A classic inertia feed. Most common on the last round in the mag when the mag spring force is the lowest. Check for weak mag springs or the presence of any lube on the feed lips or follower.
 
Ozzieman said:
Let some one else shoot it to make sure your not limp wristing the gun.

I find it odd that both mags are repeating the same failure.
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Still should not do this even if limp writing the gun. If limp writing is causing this it needs to go in for repair.


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ok so..given there is no lube on the mag follower..what should i do? the mags that came with the pistols are highly polished (SS i guess) could it be just too smooth?
 
1911Tuner said:
Invited into this one from afar...so...ok.

In 1910, John Browning put a little bitty bump on top of his 1911 magazine follower.

And now you know why.

Cheers!
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Inertia feed from a 1911 type design. If it stumped your local gunsmith you need a new gunsmith.
 
well...not sure i should need to consult a local gunsmith on a brand new pistol! maybe SIG might/should care!?!
 
and...would you be so kind to explain "inertial feed" it brings stuff to mind but want to be sure what you mean! :) thanks! edit...oops sorry that wasn't you that posted that!
 
rtv5 said:
and...would you be so kind to explain "inertial feed" it brings stuff to mind but want to be sure what you mean! :) thanks! edit...oops sorry that wasn't you that posted that!
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It's known as "Jumping the Follower" and it occurs when the cartridge rides forward in the magazine almost to the release point...not far enough to let another round come up...but far enough so that when the slide hits it, it gets knocked into the chamber ahead of the slide instead of rising into the extractor from below.

If the cartridge completely exits the magazine..."Jumping the Magazine"... the upcoming round bumps it out of the port...and that round gets chambered. If it happens on the last round, the slide locks with the empty round lying loose on top of the magazine lips. Ever found live ammo amongst your brass? That's your bug.
 
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