Dropping a round into the chamber of a 1911 can damage the extractor. It's designed to feed from the magazine. A 92FS can be loaded into the bbl by hand. The extractor on the Beretta has a spring that allows it to ride over the rim of the cartridge. The extractor on the 1911 is hand tuned by bending it to get the correct tension on it, loading one in the chamber and letting the slide slam will probably load but sooner or later you'll see extraction/ejection problems.
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