Hpw many rounds out of your GSG 1911? Mine eats almost everything after 500 rds. Fed 525 seems to be the cheapest and best ammo. Win 555/333/222 is not as bad. Win Wildcat is one of the worst. CCI blazer is also good but I hate the wax/lube. CCI Minimag is the cleanest and most reliable for me. Fed Automatch for best grouping.
GSG 1911 runs very well with a heavily oiled slide rails.