Wax bullet
A wax bullet is a non-lethal projectile made of wax material – often paraffin wax or some mixture of waxes and other substances that produce the desired consistency – that mimics the external ballistics but not the terminal effects of real bullets. Due to the low weight and density, wax bullets are typically used in a primed centerfire cartridge with little to no propellant powders, as often the primer ignition alone can provide all the necessary energy needed to propel the wax bullet out.