I have about 1,000 rounds thru my Rock Island 1911 milspec with ZERO malfuntions or jams of any kind, with all kinds of ammo. Here is a list of some of the ammo I have put through it:
FMJ: WWB, S&B, CCI Blazer Brass, PMC, CCI Blazer Aluminum Case, American Eagle (no malfunctions but American Eagle was really dirty ammo, gun had more residue than with other ammo and I had black specks all over my hands and forearms).
HP: Federal HydraShok, Speer GoldDot, PMC 185
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