What causes it to rotate is the rifling in the barrel. What causes it to continue to rotate after it leaves the barrel is centrifugal force.
Projectile expansion or projectile tumbling.
There are spiral grooves engraved on the inside of a rilfe or pistol barrel. When a bullet is fired, it is forced into those grooves, which impart a spin to the bullet. The grooves are called rifling.
An entry and exit wound generally refer to the two parts of a bullet wound that passes all the way through. The entry wound is where the bullet hits something, and the exit wound is where the bullet exits after passing all the way through.
you just exit and it will save itself
is wider on the exit side due to the impact and force of the bullet. This is because the glass fractures and breaks away as the bullet passes through, resulting in a larger hole on the side where the glass breaks.
A bullet rotates in flight due to the rifling inside the barrel of a gun. The rifling creates grooves that grip the bullet and cause it to spin as it travels down the barrel. This spin stabilizes the bullet's trajectory and improves accuracy.
When gunpowder detonates, it creates a gaseous byproduct which expands very rapidly. The expansion of this gas is what propels the cartridge through the barrel.
False
No, the atmosphere does not rotate with the Earth. The Earth's rotation causes the atmosphere to move with it, but the atmosphere itself does not rotate independently.
If you mean the spiral grooves inside of a rifle barrel- those are the lands (high spots) and grooves (low spots) that make up rifling. The bullet, being softer than the steel of the barrel, is pushed into the rifling when fired. The lands cut into the outer edge of the bullet, gripping it, and causes the bullet to rotate with the spiral. This rotation causes the bullet to travel in a straight line as it passes through the air- and is much more accurate than a smoothbore (no rifling) barrel. Ever notice how a football spins when a pass is thrown? Same thing.
To move the strike of the bullet up with an M4 front sight, you would need to rotate the sight post counterclockwise. This will raise the front sight, adjusting the point of impact higher.
the way it tilts on its axis