I used 4 wilson mags between 3 competition guns across 3 ipsc nationals.
I sometimes need to whack the lips a bit tighter literally with another mag.
I use them for dryfire mags in the basement and winter season mags for the concrete matches. They're 95% reliable, because of the feed lip expansion when hitting a hard surface.
I kid you not, those 4 mags have seen a minimum 180k rounds between them and absolutely, positively nearly infinite amount of hard floor drops and I still expect them to work in winter (as long as the feed lip gets whacked before I shoot)
I have 6 new(er) wilson mags that are flawless for summer.
They may be 40k rounds deep, and they don't need feed lip finess.