I have been shooting 1911 pistols for about 18 years and been carrying one almost every for past 15 years. During that time I have tried just about every mag available for this pistol some of which were total POS while others were excellent quality offering total reliability. One interesting thing about 1911 mags I have found is that a particular brand that is reliable for the full size is not necessarily reliable in “Officer†size.
Shooting Star 8 round mags are very reliable and durable but their spring needs to be replaced frequently (every year). Also, I recommend stoning sides of these mags on a flat stone to make sure the tube is true as I have seen some that would not drop free due to burrs. Their blued steel mags needs to be kept clean as they will rust easy.
8 round Wilson mags are considered to be the best made by many and yet I have never had one that was totally reliable for long period. This is based on 6 mags I have used in past 5 years. I have found their lip to be weaker than some others. They are usually very reliable when new but after being in use for some time they start to have problems and is usually related to spreading lips. Their fullsize 7 round mags are very reliable but mine are all over 10 years old… maybe they used to be better? However, I have found their Officer mags (I currently have 6) to be the most reliable IF the follower and spring are replaced periodically (every year).
Full size 7 round MecGar mags are reliable in my experience but their 8 round mags are not reliable when loaded with bullets with blunt shaped tip. Also, these mags will rust relatively quickly when not cleaned frequently. 6 shot Officer size MegGar mags are POS.
7 round full size Metalform mags with rounded followers are very reliable while their 8 round mags with flat followers are not very reliable. Don’t get their plastic follower.
Several 7 round Colt mags I have from 70’s and 80’s are very reliable and durable… maybe the best mags made for 1911 pistol.
My current favorite mags are 8 round Chip McCormick Power Mags. I currently have 12 of these mags and they are great. These mags have strong tube and spring and will feed all types of bullets reliably. Also, at about $18 each, they are relatively cheap. My only concern with these mags is the long term durability of the removable mag pad.
For IDPA, IPSC, Pin matches and general plinking I use CMC Power mags but for carry purpose I use my Colt 7 round mags in the full size 1911 while I only use Wilson 7 round mags in the compact size 1911 pistols.
This is only my humble opinion and is worth what you paid… $0.00