For the Firebird to function, the bullet must first penetrate through the front face of the target. The target must be adhered to a solid flat surface such as plywood, etc.
Reasons for Firebird not to function include:
- Shooting the target through the rear surface first
- Target has been improperly stored (damp)
- Target has not been stuck against a smooth solid surface
- Bullet has insufficient energy to create detonation
- Target has not been hit by bullet!