Attempted to shoot the Gun Blog 9 yesterday, was shooting some Fiocchi 115 grain, I had to keep bumping the slide to get her into battery, then on ejection it held the fired case, I thought it might be the ammo and switched over to CCI Blazer, but it continued to not go in to battery, and held the empty case in the extractor, and failed to eject.
I'm guessing between 1500-2000 rounds since the gun was serviced after the Blog shoot at BW.
I also tried using different mags no improvement. Recoil spring? Wrong Lube?
Also of late my Kimber Custom II Stainless Target (9mm) won't chamber WW whitebox, but is working with everything else, so that I consider an ammo issue