bad taper-crimp would be my first thought; is there a noticeable 'ridge' where the case meets the slug? Try stripping down the weapon and doing a "plunk" test with a loaded round of the Golden Sabers and the PMCs...see if you can feel any resistance...
are you giving the slide a full rack or inadvertantly easing it? is your feedramp nice and shiny and smooth? Load a half-rack in a mag and see if it hangs or not...
polish your feedramp...I would wager the projectile is hanging up on the feedramp texturing...were your FMJs the same profile as the Sabers?
the idea is not to remove anything but the rough texturing on the ramp itself--no removal of any metal...I personally have had great success with some 1500 grit Wet or Dry sandpaper and a couple drops of 10w30 motor oil...use a small piece of wood dowel that fits the ramp perfectly and slowly work the paper over the surface....wipe clean occasionally....I wouldn't advocate any Dremel-fu on this one
What "extractor spring"? What would the feed ramp have to do with extraction?
How many rounds have you fired through that gun? If the extractor is ok then try a different brand of ammo.
post 4....read the thread before criticizing...
the "spring" would be referring to the extractor flexing properly...its not a stringent piece of metal, it does flex under load...and if it flexes too much, it can cause FTEs....
