Got a weird problem going on with my 2 Shields

[Rastoff]

That's an assumption.

No, it's a fact. Unless of course the gun is broken or the shooter has improper technique, i.e. holding the slide stop down with his thumb.

We are talking about the Shield here. So, the slide will be held back after the last round:

This sequence can be repeated until the last round has been fired, at which time the magazine follower exerts upward pressure on the slide stop causing it to engage the slide and to hold it in the "open" position.

Of course he is using Pro Mag mags so, it's possible that the mag is not holding the slide back on the last round. It's the "weak round" that is a conundrum. The gun cannot cause that.

 

[jtaylor996]

No, it's a fact. Unless of course the gun is broken or the shooter has improper technique, i.e. holding the slide stop down with his thumb.

We are talking about the Shield here. So, the slide will be held back after the last round:

Of course he is using Pro Mag mags so, it's possible that the mag is not holding the slide back on the last round. It's the "weak round" that is a conundrum. The gun cannot cause that.

I think Steve is stating that if there is an issue, the slide isn't necessarily going all the way back far enough to lock. That would definitely cause a stovepipe.

I don't think the ammo or gun is causing it, I think the mag follower is dragging on the slide so it doesn't have enough recoil energy to lock back or eject the round.

 

[kramden]

Kramden, I did a Google search on "won't eject last round." You might find some ideas there. Good luck.

Good idea , thanks!

 

[gqllc007]

If you were on a Glock Forum you would be told you are LIMP WRISTING the gun and there is not enough energy for the slide to do it's job. Or your thumb is riding the release. Also Shield magazine springs are no good. get the Wolf mag springs like other poster said.

 

[jim46ok]

Wow. This issue has really got folks a thinkin'. Can't wait for the solution!!

 

[jim46ok]

If you were on a Glock Forum you would be told you are LIMP WRISTING the gun and there is not enough energy for the slide to do it's job. Or your thumb is riding the release. Also Shield magazine springs are no good. get the Wolf mag springs like other poster said.

Then why ONLY on the last round? Are you saying he is "LIMP WRISTING" only on the last round? Maybe I'm missing something here....

 

[gqllc007]

Then why ONLY on the last round? Are you saying he is "LIMP WRISTING" only on the last round? Maybe I'm missing something here....

Sorry it was a tongue in cheek answer. Everything wrong with a Glock is LIMP WRISTING. Lol
Since it's both guns most likely it's the mags (springs or followers)
There is nothing special about a last round except with the Glock 43. The last round is slanted in the mag
G43

Shield

 

[martybee]

OP's problem with the Stove Piping on the last round can most likely be attributed to the non-OEM mags he is using!
A far as the illusionary or preceived notion that the last round is weaker than the other rounds, IMHO, I believe this is strictley conjecture!

 

[Konk]

Sorry not to give any updates but its winter here in Wisc. So I have to wait till I can get to the range again.

If you are anywhere near Appleton or Rice Lake there are indoor ranges called Fireline that are awesome places to shoot.

 

[kramden]

If you are anywhere near Appleton or Rice Lake there are indoor ranges called Fireline that are awesome places to shoot.

Thanks for the info. I have some ranges close by. Its more of a time issue. I plan on going next week.

 

[Steve912]

A far as the illusionary or preceived notion that the last round is weaker than the other rounds, IMHO, I believe this is strictley conjecture!

It could be the Carbonaro Effect...

 

[030201_S&W]

Clean and lubricate the firearm properly and use S&W mags. Also change your ammunition. If that isn't it send it back to S&W, nothing worse than a improperly operating self defense firearm.

 

[martybee]

Clean and lubricate the firearm properly and use S&W mags. Also change your ammunition. If that isn't it send it back to S&W, nothing worse than a improperly operating self defense firearm.

"Firearms"....!

 

[kramden]

Might get the chance to go today. If I do I'll post an update tonite.

 

[030201_S&W]

"Firearms"....!

Can't ask a man to give up both his self defense firearms the same day. It's not exactly in operational just the last round.

 

[kramden]

Ok heres what the problem was. No issues with the guns or the mags or the ammo. The magazines I was shooting that day had been cleaned , lubed and loaded months ago. Key word is lubed. Some advice learned on the internet. Normally might not be an issue with regular use. I probably loaded those (16) mags last October. They have sat till I used them a week ago. They worked fine till the last round in each. Very weak fire and then FTE with both Shields. I believe the last round being on the bottom of the mag slowly picked up the lube into the primer of that bottom round. Yesterday I took all of the emptied mags reloaded with the same ammo I used last time. They ALL fired and cycled perfectly. All my fault. But lessoned learned.

 

[030201_S&W]

Keeping fairly fresh ammo in it is wise as body sweat ect, and storage area can mess up the ammo. (shoot up your old buy/load new weekly, or more often, if you carry). It is your survival you care bout most.

 

[jtaylor996]

Keeping fairly fresh ammo in it is wise as body sweat ect, and storage area can mess up the ammo. (shoot up your old buy/load new weekly, or more often, if you carry). It is your survival you care bout most.

If you're that concerned just seal the primers yourself. Pretty sure it just takes some fingernail polish.

 

[Rastoff]

Yeah, mags need no lubrication. In fact it's bad for just this reason.

If you're that concerned just seal the primers yourself. Pretty sure it just takes some fingernail polish.

I guess you could do that, but be careful. Added material to a cartridge could cause feeding or firing issues.

 

[JVSIII]

While you shouldn't lube your magazines (running a silicone impregnated cloth through them isn't terrible), I have to ask. What ammo and what lube did you use? How much lube and how long were they loaded?

We tried soaking some carry ammo in WD-40 for up to a week and had no failures. It was hardly a scientific test though. We put 50 rounds in a cup and shot up 10 per day. With a weekend in the middle. This was with Federal SD ammo that when pulled, there is a black in color sealant on both the bullet and primer.

ETA: I am in no way condoning the use of any penetrating oil on a firearm nor that penetrating oil can't kill a primer or foul the powder, just that oil and that particular box of ammo had no issues.

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