I replaced the recoil spring with a gen 3. I replaced the MIM extractor and spring load bearing. The slide won't lock to the rear after the last shot and I'm still catching brass to the face. What do I have to replace next?
I would try switching loads within a manufacture first. Try their standard 115, 124, 147 loads. If the performance is not what you expect, switch manufactures.
Believe it or not, each load will eject different than the other
If you have tried different brands its time to start switching parts. I recommend you attend a factory sponsored GSSF shooting event and let the factory guys change out the parts until it stops hitting you in the head