Second shot in the ceiling. “I fired a warning shot but he still came after me”
no warning shots
And you would go to jail for murder. The first shot would create blood spatter, some of which would be on the ceiling. The second shot would create an overlay of gun powder over the blood spatter and the crime scene investigators would know that the person was shot first, and then the shot was fired into the ceiling. You can't beat forensics.
In Florida someone breaking into your home is automatically considered armed. Regardless of which state you are in all a warning shot is going to do is put other people at risk and waste ammunition you might end up needing.
IMO either you have cause to use deadly force or your don’t. If you don’t then the bullets should stay in the gun.
Finding someone in my home is definitely cause for use of deadly force.