S&W M&P22 - Failure to Eject 99%

[trader914]

Bought a used M&P22 and had lots of problems with it initially - FTF and FTE 15% of the time. The ammo was bulk Federal lead ammo. Then I switched to bulk Federal copper hollow point and it still had little bit of problem but not as much. Then I thoroughly cleaned the gun and it fired perfectly for about 300 rounds until I ran out (maybe 1 or 2 problems in 300 rds).

Today, I went to shoot some new 500 round bulk Federal I got from Walmart (Lightning - 40 grain/lead) and it literally failed to eject 99.9%. When I examined the gun, I noticed that the extractor was not grabbing the shell. It looked like the lip on the shell was too short/thin for the extractor to grab and eject. I did not have the copper hollow point to try again after this failure with the Walmart bulk ammo and I did not pick up the spent shell casing to try to compare (they were all over the floor).

What can you conclude from this, if any? Is this kind of short-lipped shell casing common? I do have a Ruger Mark III which I have not yet tried to shoot with this ammo yet.

 

[Rastoff]

Were these failures to eject or extract? Did the spent casing stay in the chamber or did it just not clear the ejection port?

I have a friend with one of these. He says that he needs to use higher power ammo to get the gun to operate reliably.

 

[trader914]

The spent casing was in the gun. And it would eject when I rack the slide manually.

 

[Sgt 45]

I'd guess it's ammo. My .22 conversion for my Wilson does not like certain ammo. For whatever reason it likes Remington Thuderbolt even though it's dirty and leads the barrel. It does not like Winchester bulk ammo at all. CCI stingers are great if you can find them and afford them.

 

[Jagrmaister]

Mine was ammo picky at first and would have around 25% failure with bulk packs. Used CCI exclusively for a few hundred rounds without any hiccups. Switched lube and also tried the bulk again thereafter with no problems.

 

[moonclips]

I had one like that, I sent it back and they "fixed" it, still kept doing the same thing. I got rid of it, I don't want a .22 that only feeds mini-mags

 

[Wolfman-Iraq]

I've had my M&P22 for over a year now, with over 10k through it, have no problem with any ammo.

Did have to replace the coil spring and the extractor (s&w replaced them under warranty).

 

[Wolfman-Iraq]

I've had my M&P22 for over a year now, with over 10k through it, have no problem with any ammo.

Did have to replace the recoil spring and the extractor (S&W did replace them under warranty).

 

[gm272gs]

...over 10k through it...Did have to replace the coil spring and the extractor...

Yeah, I guess you would.

 

[Rastoff]

The spent casing was in the gun. And it would eject when I rack the slide manually.

If it's being left in the chamber, then you have an extractor problem.

If it's just laying in the ejection port, then it could be the ammo or the ejector.