Yes. They don't necessarily always render good prints. They can, though
Shell casings were made at Frank's house... Frank the turtle is an excellent shell maker... Just look at his.... :)
Some were.
Shell casings are typically either brass, steel, or aluminum.
The shell casings are a type of ammunition packaging, a reloading component. Ammunition is something that can be directly fired, a bullet, not the cartridge. Laws regarding such vary from state to state.
Some states require it.
To collect your spent shell casings.
None. Officer Tippet was killed with a revolver - no shell casings were ejected.
Duty, honour, and country.
To reload them, yes. To sell as scrap, no
1944 and 1945 cents were made from recycled copper shell casings. 1944 and 1945 nickels were made from a combination of silver, copper, and manganese to free up nickel for use in weapons.
The forensic scientist tested the crime scene for latent fingerprints.
Unless it's a custom job, they're not shell casings, just made of similar material and design. They keep the ends of the ropes from becoming un-ravelled (frayed).