1911 8rd .40 AUTO, .357SIG Magazine is rated 3.6 out of 5 by 7 .

Rated 5 out of 5 by Rob1776 from 1911 magazines for 357 Sig These are well made and I have had no problems with them and they were a great price!

Rated 5 out of 5 by Bushmasterwill from 357sig magazine 1911 Great Magazine for my 1911 357sig Nightmare. No problems whatsoever.

Rated 4 out of 5 by TrooperJim from Good magazine with a minor problem These magazines have a piece attached in the rear of the magazine to keep the cartridges at the front of the magazine. Several times cartridge rims got caught on this piece jamming the magazine. If this piece came up a little higher this would not happen.

Rated 3 out of 5 by Adam73 from Not the best feeding magazine I bought these mags for my Nightmare carry in 357 Sig. They are combination 40 S&W/357 Sig and perhaps they shouldn't be. I believe the bottle neck design of the 357 case may lend itself to poor feeding. Perhaps an improved follower would help. Additionally, the springs in these mags seem weak when nearly fully extended. This prevents the follower from engaging the slide stop some of the time. The mags functioned fairly well at the range but I might think twice about relying on them for carrying.