Yes, used rifle (and pistol) brass can be re-used several times. If it wasn't, you wouldn't be able to buy thousands of products for reloading ammunition.
not if it is capable of firing full automatic...................
The bolt action was created as a repeating rifle capable of firing a powerful cartridge.
Before the rifling of the rifle, lead balls were fired.
Any Speed above 1,125 is considered Supersonic. There are several pellet rifles capable of this speed. As an example the PCP Air rifle, Air Force Condor is capable of firing a .177 pellet at 1,450 FPS.
The M4A1 carbine is chambered for the 5.56x45mm NATOcartridge, the same as the assault rifle it was derived from, the M16. It is also capable of firing the .223 Remington sporting cartridge.
In GENERAL (but not always) a bolt action is capable of greater accuracy than a semi auto. In GENERAL, may have a stronger action capable of firing a more powerful cartridge.
Brass
A weapon capable of both automatic and semi-automatic fire. Usually firing a round with energy between a pistol and high powered rifle. Anything else is just a rifle or carbine, that fires in the semi-automatic mode, that LOOKS like one.
The Winchester Magnum Rimfire is a larger round, and is capable of producing twice as much energy as the .22lr. I do believe that Ruger is making a rifle capable of handling the .22WMR, but a standard .22lr rifle is incapable of safely firing the .22WMR.
Lever action rifle with a (yellow) brass frame.
Magazine, breech.
Most are real brass, although some is made of steel. Brass is just about the perfect material- when a cartridge fires, the brass expands and locks to the walls of the chamber, containing the pressure of firing. When the pressure drops, the brass casing "relaxes", pulling back away from the chamber walls, permitting it to be withdrawn. Historically, besides brass and steel, cartridge cases have been made that were leather, paper, plastic, and copper.