1. Load the pistol, remove the magazine.
2. Fire the round. If it stovepipes, gets stuck, falls out the magwell, etc........which it probably will, you need a new extractor (or tension the old one)
Your pistol needs to be able to cleanly and reliably extract spent casings WITHOUT the assistance of the magazine follower/next round in magazine.
SGB is right about the odds of this being an extractor problem.