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Why is the barrel of a gun highly polished from inside?
In order to reduce friction it is important that the inside of the barrel be highly polished. Also the gas pressure (from the explosion of the charge) on the bullet is what drives the bullet and in order to maximize the pressure there cannot be much gas leakage areound the bullet in the barrel....so the bullet can slide through quicker, easier, and smoother.
What is th purpose of rifling a gun barrel?
Rifling a gun barrel causes the bullet to spin when it comes out. This makes the bullet fly more straight and greatly improves accuracy. Much like a spinning football spirals.
How much is the momentum needed to fire a 9mm bullet?
Usually just a primer will get it partway down the barrel.
How does rifle barrel length affect bullet performance?
Doesnt. Twist and bullet weight will decide much of the accuracy. Long barrel for magnums because of the amount of powder being burned is important. Otherwise short barrel in any rifle will just increase muzzle flash and report.
How much gunpowder is in a 9mm bullet?
Technically speaking- none. A bullet is the solid metal part of a cartridge that is fired out of the barrel. How much gunpowder is in a 9mm Parabellum CARTRIDGE will depend on the powder used and the bullet weight. I reload with 4.6 grains of Bullseye powder with a 115 gr bullet, but there are dozens of other loads.
Does the velocity of a 22 caliber bullet change with the length of the barrel?
Yes. The velocity of all common cartridges changes with the length of the barrel. In the case of a .22 LR, they develop the maximum velocity between 12 and 16 inches of barrel. Shorter than that, the gasses from the gunpowder have not accelerated the bullet as much as they can. Longer than that, gasses reached their max acceleration, and the bullet is now slowing from friction in the barrel.
How does the spiral barrel on a gun work?
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.
What effect does rifleing in the barrel of a gun have?
It makes the bullet spin when it is fired- much the same way a football spins in flight. The helps the bullet travel in a straight line, improving the accuracy of the gun.
Gun barrel rifling?
RIFLED firearms are those that have a method of making the bullet spin when fired. This makes for a much more accurate projectile. The oldest and most common means of doing this is buty cutting spiral grooves on the inside of the barrel. These grooves grip the bullet, causing it to spin as it passes up the barrel. The grooves are known as rifling.
How much does each 50 calibre round weigh what is weight of bullet what is exit speed of bullet from barrel of gun?
The standard military .50 BMG round uses a 750-grain bullet which exits the muzzle of the gun at around 2,700 fps.
Does a long barrel helps the bullet to travel long distance?
Yes and it helps with accuracy as well. The barrels of long distance guns are much longer due to the fact that they are firing much longer rounds, what also helps with distance and accuracy is that the inside of the barrel is grooved in a spiral fashion which causes the bullet to turn allowing it to go further and straighter.
How much powder is in a 50 cal rifle bullet?
The proper term is CARTRIDGE- bullet is the part of a cartridge that is fired from the barrel. There is no one answer to your question- it will depend of which .50 CAL cartridge- and then it depends on the loading of that particular cartridge (different bullet weights will have different powders/ amounts)
