I use Tripps and Wilsons extensively.......and VERY often......no issues.
Tripp exclusively. I could experiment, but why bother. Almost everyone I know who shoots in Classic Division uses Tripp.
Tripp Research Cobra's are an excellent choice as well, both 8 or 10 rounders. Smooth feeding as melted butter. Northern Republic Magazine usually has them in stock.
I have or have had a half dozen brands of 1911 magazines: I will only run original Sig 8 round (all metal) and Tripp Research 10 round magazines (plastic follower with the metal insert) in my Sig 1911. Nothing else runs as flawless, period. I have never used Chip...
Short story about Chip mags: I had heard certain Chip mags have a short all metal follower and on the last round loading the follower can slide slightly forward, then upon removing the mag it scratches the feed ramp. I figured, "Gotta be bullsh!t, right?" So I went to a local gun shop and asked to see one, telling them about it. I of course got, "Chip are the mags that everyone
wishes they were: they are flawless. You're an idiot for listening to them." I held the brand new, never been used, had to beg to open the sealed package Chip mag in my right hand and ever so slightly pushed forward on the follower with barely any pressure...
TWANG!!
The follower almost impaled the salesman in the face and most of the spring contorted out of the mag body possibly wrecking it (and later seen the web between my thumb and index finger was bleeding). I passed the remainder of the mag to the salesperson, apologized (I am Canadian), and said maybe I'm not so stupid for wanting to find out. True story, ask Phoenix Gun Range in Edmonton!
I came home and ordered Tripp mags from Northern Republic Magazine that evening: I think I should order more, maybe...
