Well you were right, this Sig 1911 is reliable
Ive put more than 400 rounds through this gun and had one failure to feed with a handload. It was definittely magazine related because it functioned fine when transfering the rounds to the other mag. Since then I changed my overall length from 1.235 to 1.245 and ran 40 shots with no hitches from either magazine.
This is the most fun Ive had shooting in a long time.