22Mag SMG ?

[GUNS-R-US]

is it a strait mag or is it cruved?

The mag its self is curved for the hole 25 rounds but the first 14 or 15 are strait. At that point it starts a noticeable curve. As long as the rim of the top one is ahead of the bottom it work just fine! Curved or not!

[GUNS-R-US]

I was just looking at my Marlin's .22 mags and it's double stacked as well. It's only about 2" long, enough for 7 rounds, but it's strait. Take a mag as long as the ruger 22/45 and it should be able to get 14 to 15 rounds in it with no problems feeding. It seems to me that the manufactures just don't want to put the R&D into it because they can sell 10 rounders anywhere, but their limited in where they can sell higher capacity mags.

[Combat Diver]

Rimmed cartrigdes can be double stacked as the Kel-Tec and BREN LMG in .303 demonstrates.  I would not want one as a full auto as I think the center fire 5.7x28 does a better job and more reliable ignition.  However,  I am in need of a new .22 Mag rifle to replace my Marlin 793 that I had to sell.

CD

[ratcatcher55]

I did get to shoot one of these many years ago.

http://en.wikipedia.org/wiki/American-180

I think there was a 22 short mag version

[Fatman]

They do just fine. The S&W M&P15-22 uses a double stack 25rd mag with out any feeding problems!

Beat me to it.

[Sponsor]

[tombogan03884]

There was also the Coonan Arms 1911 in .357 Mag, I never heard of feeding problems with that.
As far as I know the reason it didn't take off was the size of the grip needed to hold .357 rounds.