Kinetic Energy

Although there is a considerable difference between Airsoft and paintball energy levels, the type of collisions that occur (elastic airsoft vs. inelastic paintball) must also be considered (refer to Airsoft Pellets Ballistics).

Kinetic energy is the energy that is transferred from the pellet to its target upon impact. One joule of energy will be transferred at an fps of 330 with a BB at the weight of .20g. Most fields limit guns to 330fps for CQB, 400fps for outdoors, and 550fps for bolt action sniper rifles, all measured with a .20g BB. The level of kinetic energy goes up and down depending on the weight of your BB and how fast your gun can propel that weight of the BB. There are certain places that play no fps limit games, the most famous being ASH BASH in Hawaii.

In the United Kingdom, the energy limit for all Airsoft is usually 1 Joule (328fps with a 0.2 gram 6 mm BB) regardless of the type of game play.

Most Airsoft guns are capable of shooting from 150fps to 400fps, though it is also possible to purchase upgraded springs for some Airsoft guns that will enable 400 to 600 FPS projectile velocities.

A hop-up unit, if present, puts backspin on the BB. This backspin generates lift and gives the BB a further effective range. Too much applied hop and the BB will ark skywards, too little and the BB will fall to earth prematurely.

The range of any Airsoft gun depends on both the fps at the muzzle, and the amount of HOP applied. Airsoft guns can have a range of 250 feet or more with enough power, the right barrel, and ammunition as well as a good hop-up unit. The hop-up rubber or bucking is also what retains the BB in the barrel until firing.

Article source From Wikipedia, the free encyclopedia