Back in the early 70's a member of my unit, while in plainclothes, was forced to shoot a drug dealer when a buy went bad. He shot the perp twice in the chest killing him instantly. He shot him with his S&W .38 Chief using .38 Super Vels. When he was asked to present his revolver to an Inspector, as he opened the cylinder to unload it the cylinder literally fell apart in two pieces and dropped to the floor. It was a good shooting, but he was issued complaints for using unauthorized ammo. Back then our Rules and Procedures allowed us to carry a second gun regardless of caliber, or ammo. But we had to also be carrying our authorized service revolver, or OD revolver. His problem was he only was carrying his gun with unauthorized ammo. I used to carry at times a BHP loaded with Super Vels that were legit. Back then not too many civilians sued the PD, but today it would've cost him his house, or more. Lucky for him the guy wasn't shooting back.