A firearm ammunition device includes a cartridge with a projectile that is
loaded with a tracer agent. When the projectile is fired and strikes a
game animal, the impact causes the release and dispersal of the tracer
agent from the projectile. The dispersed tracer agent identifies an
enhanced-visibility trail of the fleeing animal. In example embodiments,
the cartridge is provided by a centerfire cartridge, a shotgun cartridge,
and a muzzleloading cartridge. The tracer agent preferably comprises one
or more compounds that produce visible light to the naked eye and/or
under a black light source. Example tracer agents include biological
stains that produce visible light upon contact with blood, luminol or
another chemiluminescent compound that releases light by a chemical
reaction such as may occur when contacting blood, a basic salt such as
sodium carbonate or another effervescence-inducing agent, a
phosphorescent compound, or a fluorescent compound.