MP Sheild issues

[BJ Shock]

My 9mm shield is acting up...

...Full mag, one in the chamber, aim and shoot.

Shoots fine. Try to shoot again... nothing.

Try to rack the slide... its stuck.

Notice that slide is not fully forward...

Bump it hard with my hand...slide goes forward... shoots fine and the same thing happens every time,

Tried JHP and FMJ, same thing...

 

[Doug M.]

How well lubed is it? A decent quality semi-auto (pistol or rifle) should easily go 1500 rounds without cleaning a long as it is properly lubed. What ammo brand?

 

[Kp321]

Sure sounds like ammo/chamber problem. Been shooting any steel case ammo? It can leave a sticky residue in the chamber. Clean chamber very well, steel wool wrapped around a brush and spun with a drill.

 

[rwsmith]

Sure sounds like ammo/chamber problem. Been shooting any steel case ammo? It can leave a sticky residue in the chamber. Clean chamber very well, steel wool wrapped around a brush and spun with a drill.

I use a copper chore boy for that.

 

[BJ Shock]

My 9mm shield is acting up...

...Full mag, one in the chamber, aim and shoot.

Shoots fine. Try to shoot again... nothing.

Try to rack the slide... its stuck.

Notice that slide is not fully forward...

Bump it hard with my hand...slide goes forward... shoots fine and the same thing happens every time,

Tried JHP and FMJ, same thing...

Sure sounds like ammo/chamber problem. Been shooting any steel case ammo? It can leave a sticky residue in the chamber. Clean chamber very well, steel wool wrapped around a brush and spun with a drill.

Yup dirty chamber. Silly me.

 

[toddstang]

Mine wasn't a dirty chamber.
First time out it did exactly what the OP's did.
Sent it back to S&W. They said that they polished and "Reworked" the barrel.
So far it's been 100% since it's returned.
Pics are from the failures.
Also, didn't have pics, but the slide would not go fully forward when it would cycle next round.