Extractors are either designed to pivot around the rim or to have the rim slide up from underneath. If you have the latter than it can be damaged or stretched out of adjustment by dropping the slide on a round. I don't know what you have but there is really no good reason to chamber a round and then drop the slide on top of it. I have simply learned from years of shooting 1911s to always load rounds from a magazine. It works on every gun. As far as setback goes, if you're seeing any STOP using that ammo and stop rechambering rounds more than once. The problem is defective ammo and there is nothing can you do as far as loading that is going to have any effect on setback. If a round sets back far enough really bad stuff can happen to you. The reason it is getting set back is because it is junk ammo - regardless of whose name is stamped on it.
Last edited by drail; November 18, 2012 at 04:39 PM.