It depends. In most states, no. However in some, any part of "ammunition" is considered ammunition and requires a license to possess. This includes shell casings. The state of MA has this requirement, for example.
The same as it is before it's fired - a casing. Some refer to an empty casing as a "shell" or "shell casing".
The extractor, which is part of the bolt. It clamps around the shell casing and has a ridge which locks into the cannelure of the shell casing (small indentation near the base of the cartridge which goes completely around the casing).
Unfortunately, a penny or two. They are fairly common.
the gas pressure from the exploding shell ejects the empty casing and activates the reload mecanism
The weight of a 105 mm howitzer shell casing typically ranges between 15 to 20 pounds (approximately 6.8 to 9 kg), depending on the specific type and design of the shell. This weight can vary based on factors such as the material used and whether the casing is empty or contains the projectile and propellant.
An expended shell casing is the empty metal container left behind after a bullet is fired from a gun. It holds the primer, gunpowder, and projectile before being shot. Shell casings are often collected at crime scenes as evidence to help identify the type of weapon used.
how much is 1942 shell casing mm.m18
All Bolt action rifles work the same. When you fire you have to manually operate the Bolt to eject the shell casing and load the next shot. This must be done for each shot until the rifle is empty. In the case of Air soft there is no Shell casing, but it's the same action to load and fire.
The length of the shell casing.
If you mean the empty casing won't eject, it could be an extractor problem, but it could also be something else. If it is doing it consistently, you should probably have a gunsmith look at it.
Sometimes yes, but not always.
the shell would never be empty, there would be another shell under it and it would have all of its valence electrons