BULLET HITS
The effect of the bullet hit can be a splatter kind of blood massacre look, dust puffs on concrete, spark hits on metal objects or hits on water. Bullet hits are made either by using pyrotechnic methods, squibs or air compression depending on the type of hit wanted and the target. (The target can be a person, concrete, wood, glass, metal etc..)
We often use wireless firing devices for triggering squibs, this is a very popular way to create realistic looking bullet impact and enables the actor to move freely.