Howdy,
On the subject of magazines for a .38 Super 1911. The prices are all over the place! Chip McCormick makes a classy product that I have had great luck with in .45 ACP. Metalform mags are supposed to be Colt-spec, or the same as Colt mags. Nine rounds seems to be enough, but ten would be better. I have seen prices from $12.99 to $43.00, and everything in between. CDNN has the least expensive, but they are soo cheap that I'm skeptical about the quality. Metalforms are around $20, if you look around.
And, what about nylon v metal followers?
I also read a description stating a magazine had SWC feed lips. Huh?
Bitterroot Bob