2-4 decades if stored cool and dry
Not familiar with an atomic rifle. There have been artillery pieces that can fire an atomic shell, but not a rifle.
There is no such rifle, the Winchester Model 88 is a highly collectible lever action center fire rifle available in .243, .284, .308, and .358.
no
By pulling the trigger, by dropping it with a shell in the chamber and by a slamfire.
The Riflemans gun held 12
22 bullets come in short, standard and long. Your rifle is telling you that you have to purchase .22 long shell bullets.
The correct term is cartridge- which is the cartridge case, primer, powder, and bullet. A sniper rifle is simply an accurate, long range rifle that is used by a sniper. It may look exactly like my long range hunting rifle- since most military sniper rifles BEGAN as a civilian hunting weapon.
The factors of 358 are: 1, 2, 179, 358.
Sound of an artillery shell exploding is "crump." A rifle shot is "crack."
Brass refers to either a rifle shell casing, or medals on a uniform
Sorry- that is a serial number, and conveys no information. If the barrel is not marked, you need to take it to a gunsmith who will measure the chamber- not only for gauge, but for the correct shell length. Just because an unfired shell fits does not mean it is the correct shell. And it is not a rifle, but a shotgun.
358² = 128164