The Beretta 21A is the only reliable Pocket 22 auto I have found.
Reliable .22 pocket autos. Astra Cub and Beretta 950 in .22 Short with the plated 29 grain solid bullet

The Beretta 21A is the only reliable Pocket 22 auto I have found.
I got a 629-4 Mountain gun, an 11-87 special purpose and a 1.75x6 Leopold from the Jumbo Sports in Lafayette when they were going out of business all at "theft" prices.I bought the S&W 317 from Jumbo Sports when they went out of business. $250.00 well spent!!
Reference Post 27 (The Quote button doesn't seem to work this morning!), I have one of the Erma-Werke versions and have found it reliable with all ammo tried so far. I did once get a slam fire with the first round of a fresh magazine. Forget the brand cheapo ammo, but I never bought any more. It has never happened again.I have a blued American Arms distributed by Interarms as the PX-22. This is marked Designed by Erma-Werke. Slightly different magazine release, otherwise a TPH copy. It too likes only round nose, and as others noted, 100% reliable with Remington Goldens. After I used up all the Goldens I had in other 22's, I tried CCI Mini-mags and it shoots dead-on the sights at 15-25 feet. Found it in a pawn shop in 1989 for $100, and I found 2 Erma-Werke branded mags for it on FleaBay a few years ago at a good price.
Read this-Reference Post 27 (The Quote button doesn't seem to work this morning!),
Unfortunately I have not had a chance to fire mine yet. When I do I will have as much of a variety of ammo as I have to see what it likes, and a bore brush and patch.
a range toy for me and not a carry weapon.