Dallas Police Sergeant Gerald Hill radioed from the scene of the Tippit shooting to the Police Dispatcher and said: “The shells at the scene indicate that the suspect is armed with a .38 automatic or semi-automatic handgun rather than a pistol.” (pistol - a/k/a a revolver or wheel gun).
Oswald was captured with a .38 Special Revolver.
There is a substantial difference between an automatic and semi-automatic handguns, which ejects discharged shells immediately, automatically, versus a revolver, which requires deliberate opening of the weapon to empty the discharged shells.
Automatic and semi-automatic handguns also require different types of ammunition, which cannot be used and fired interchangeably from a gun not designed for its specific use, anymore than you can fire different caliber ammunitions in a gun not specifically designed for its use.
Finally, it is beyond comprehension that any trained shooter who just killed a Police Officer in broad daylight would stop to open and empty his discharged shells from a revolver, and further risk being seen, identified, chased, and/or captured.
The only realistic analysis of this scenario that could possibly make sense would be to plant evidence.
If you ask the wrong questions the answer does not matter!
then if you control the questions being asked the answer still does not matter!
To continue doing the same thing over and over and expecting a different result is "Insane"