You WILL eventually damage the extractor by "Force Feeding" the gun. When a round is loaded from the magazine, it slides up into position on the breech block and "into" the extractor. By letting the slide close on a chambered round the extractor must open up to an unnatural position and WILL break eventually.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball