Who killed Officer Tippit?

[CK_John]

7. The pistol that works well outside but fails to work inside and revolvers carry casings

with the weapon. Arrested by an FBI agent, who shows up like the magic bullet.

This infamous pistol was a .........., bought when ......... and where..........???

We know all this by route about the rifle from the movies, hearings but you never hear anything about this phase.

IMO it was planted and don't bother tying to change my mind.