Here is a good article for you-
http://en.wikipedia.org/wiki/.577/450_Martini-Henry
The .45 caliber bullet is not used in a sniper rifle.
WHICH Henry? The antique Henry rifle made in the 1860's or the current Henry Repeating Arms Co rifle?
to Bullet.
5.56x45mm
Basically, a rifle is a place to direct the explosion of gunpowder directly to the bullet to increase the efficiency of gunpowder so the bullet can travel faster, and increase the bullet's momentum so it does more damage. The rifle also is used to increase the accuracy of the bullet. By focusing the blast directly behind the bullet, the bullet is more likely to travel in the intended direction. Striations in the rifle also spin the bullet so it corkscrews forward, making the path of the bullet straighter.
An AR-15 is a rifle that uses 5.56 mm bullets. It is a semi-automatic rifle. This specific type of bullet is the most commonly used bullet amongst the NATO forces.
Henry rifle.
HENRY
Main weapons of the Zulu War for the British was the Martini Henry Rifle, with bayonet, and various sizes of cannon. The Zulus used the assegai (a short stabbling spear) and the knobkierrie (a wooden club with a ball-shaped end).
BULLET is the term used for the projectile fired from a cartridge. The largest civilian rifle cartridge is the .950 JD Jones.
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.
that depends on caliber, bullet weight, powder type, amount of powder, the gun used and other factors.