Been thinking about my 1911s, too. Between the two of them, a Series 70 Gold Cup and a Series 80 Government Model, they have at least a few thousand rounds through them. I know one of them had feeding issues with 230gr Hydrashock. I think it was the GC. And I believe the Govt Model had some issues with erratic ejection (extractor clocking...?) and the front sight coming loose (I really regret getting a Millet Dual-Crimp front sight), but otherwise fed and ejected ball ammo. Can't remember if it had issues with Hydrashock. Hydrashocks were the only HP ammo I tried. Rest was ball from a variety of makers. Neither of my 1911s were, or are, used for defensive purposes, range guns only. Can't say if either of them had gone through 1k trouble-free rounds. This was before I started keeping track of round counts.