10th round fails to load every time

[Swans]

I just bought the P22 and went to the range. when I start with a fully loaded magazine rounds 1-9 fire reliably but the 10th round goes high, right over the chamber/barrel and the tip of the round sticks above the slide every single time.

From what I have read so far I am guessing this is a magazine problem. I have the B stamped on the mag which I think indicates it is gen 3. I see posts for problems with older gen mags but not much for the gen 3.

can anyone tell me if this is most likely a mag problem or a problem with the firearm itself. I do not suspect it is the firearm because if it was rounds 1-9 would also not be reliable. Is there a way to fix this or do I need to buy new mags?

[Cokeman]

Is it a new gun? When did the problem start in the gun's life?

[bigfatdave]

Well, if you only have one magazine, then YES, YOU NEED MORE MAGAZINES!
Why people have a semiautomatic and only one magazine will never make sense ... if you want all the ammo you could possibly have prepared to exist inside the gun, get a revolver. The entire point of a magazine-fed weapon is that you can have another magazine on hand. I know that Walther/Umarex/S&W screwed you by only including one mag, and that's a asshat move on their part, but there is still no point in a mag-fed gun with one mag, get another magazine, or even better, two or as many as you can get your hands on.

Now ... to troubleshooting, first, get another magazine. Seriously, you can't troubleshoot much of anything without a second mag.

...Then...
Clean your old magazine, check for damage/roughness on the follower and feedlips. Look for burrs on the side cutouts, feel around with a cotton swab and see if somewhere that should be smooth starts tearing up the tip. Remove those burrs gently.

After you clean everything off, leave the mag dry, do not put oil in there. If you must lube, use something that leaves a dry film, like "Liquid Wrench" spray (cheap at your nearest auto-parts store, look for a white spraycan with a yellow nut-shaped cap) or a graphite powder type lube.

Re-assemble magazine #1, making sure it is assembled just like magazines #2-103, then take apart the next one and repeat the above procedure. Umarex makes these magazines as cheaply as possible, and sometimes that means burrs and other stamping artifacts aren't removed.

My remote troubleshooting crystal ball is somewhat cracked, but if rounds 1-9 are feeding, narrow it down to things that are different for round 10 exiting the mag, which includes (but is not limited to) the following:
no round under it, just the follower
less spring tension from below
less tension against the lips above
different region of travel for the follower

[1917-1911M]

100% magazine problem. If the pistol/magazine is new I'd call S&W and ask em to send me another. And a spare for my trouble. Even if it wasn't new. M1911

[Swans]

I bought it used from Cabellas, it is 2 magazines not one, sorry I did not specify that it is more than one magazine. both magazines fail to load on the 10th round.

I have taken both apart and they are both clean and free of lube or other oil.

I will look to buy a 3rd of a different brand and see what happens with that.

[Cokeman]

Look on the outside of the chamber where the proof marks are. There is a 2 letter code stamped into it. What are your letters?

[1917-1911M]

Originally Posted by Cokeman

Look on the outside of the chamber where the proof marks are. There is a 2 letter code stamped into it. What are your letters?

He said they were B mags in the OP which means they should be good to go but something is wrong with them. Weak spring, someone has been playing around with the lips, something. Might be really easy to fix...might not be. I should put up a good, clear picture or how the last round sits in a properly functioning mag so the OP can see if his sits likewise. M1911

[Cokeman]

He should put a picture of his mags with the last round in it too.

[searcher451]

Lots of might-bes here. Might be the spring was put in backward after the last cleaning, or the one before that -- or the last time the guy who originally owned it did it and then sold it because it no longer worked?

[ans1215]

Originally Posted by 1917-1911M

100% magazine problem. If the pistol/magazine is new I'd call S&W and ask em to send me another. And a spare for my trouble. Even if it wasn't new. M1911

i just put a 5 inch barrel on mine 2 days ago, i didnt polish and smooth the edge of the chamber per your write up like i did with my standard barrel and im having same problem, i tried 3 different magazines and same story. i'll polish it tomorrow, maybe his and my problem have to do with the barrel and ramp?