Unreal Tournament 3/Glossary

Hitscan - A weapon that acts instantly. There is no bullet travel. The exception is when playing online; if for example there is a 0.2s lag on your connection; whatever is in your crosshair in 0.2s time is what will be hit.

Projectile weapon- A weapon that takes a little time to travel to hit it's target. The rocket launcher is the most obvious example.