The one 'n only SR1911 that I've ever shot was a NIB example which belongs to my Son in Law. Right out of the box, it ran 100% with every mag we tested it with...including...both factory mags, a couple of USGI mags, a 25 year old Pacmeyer, 3 different (new) Metal Form's and one old unmarked mag which I've had so long that I don't remember where I got it.
Ammo used was Winchester and Federal hard ball, plus a 50-round box of steel-cased Tullo....altogether, about 250 rounds. Also note that with the exception of the Ruger 8-Rnd mag, all the others were "standard" 7-Rnd capacity.
Those results perty-much mirror my experience with any good 1911-type pistol, so your SR should do the same. If it don't, you have some sort of a gun problem.....not a mag problem.
DGW