Correction, after close examination while slowly chambering a round from the magazine the case does indeed appear to slip up underneath the extractor. I'll try different ammunition and just switch rounds out more frequently rather than manually loading the round to prevent setback.
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
It does appear to be a problem with the Gold Dot's which is a shame because they have always been my go to ammunition and have always worked in all my guns. I have been repeatedly chambering a cheap bulk .380 hollow point round to see how the extractor works and have seen no visible setback.