The sound of a rifle firing is often described as a "gunshot" or a "bang." It is a loud, sharp noise created by the explosion of gunpowder inside the rifle's chamber propelling the bullet out of the barrel.
If you are asking about a "springer firing system" The answer is NO do not dryfire it. When you shoot a single cock springer rifle or gun with a pellet in the chamber, there is a moment where the piston actually slows down just before the pellet is fired down the barrel. If you have no pellet in the chamber the piston slams against the end of the chamber and this will eventually ruin the chamber. Dry firing a Co2 gun will not hurt it. You will just waist Co2.
The 5.56 cartridge has a different neck angle from the .223 Remington, generates higher chamber pressures, and has different weight projectiles available. .223 Remington can be safely cycled through a rifle with a 5.56 chamber, but it is not recommended to use 5.56 ammo in a rifle with a .223 chamber.
The bolt action was created as a repeating rifle capable of firing a powerful cartridge.
Chamber pressure is determined by the cartridge, not the rifle.
the barrel chamber is drilled through or bolt welded to receiver, are 2 ways
If you are talking about an air rifle. You need a .177 cleaning kit or thin ramrod. Push it back out into the loading chamber from the barrel. Do not keep firing it.
Until you blow one up in controlled testing, you won't know. SAMMI publishes maximum pressures for cartridges that should not be exceeded.
Possibly. The commercial .308 Winchester generates higher chamber pressures than military 7.62x51 does, and this may not be advisable practice for all 7.61x51 rifles. If in doubt, inquire with the manufacturer of the rifle before using commercial .308 ammunition.
Possible? yes. Likely? No. In order to fire while on safe, either parts in the fire control mechanism would have to be broken, or, if the rifle has been fired at a high rate of fire, the chamber is extremely hot, it is possible for a cartridge to 'cook off"- to be fired from the heat of the chamber- no firing pin strike. This would occur within seconds of chambering a cartridge in an extremely hot weapon. Due to the "floating firing pin" the use of very soft primers (non-milspec) COULD result in a slamfire- rifle fires when bolt is allowed to slam forward, chambering a round and immediately firing it.
A rifle with a 5.56x45 chamber can utilise .223 Remington cartridges. A rifle with a dedicated .223 Remington chamber cannot accommodate 5.56x45 cartridges. A rifle with a .223 Wylde chamber can accommodate .223 Wylde, .223 Remington, and 5.56x45, but neither a rifle with a 5.56x45 or a .223 Remington chamber can accommodate the .223 Wylde cartridge.
The G3 rifle can chamber the 7.62x51 NATO cartridge, and it could chamber the .308 Winchester if it needed to. No other cartridges are compatible with this rifle.