Dramatically increases pattern awarenessa |so you see the trail clearly, day and night. SupernovaA(R) Tracer Ammo uses a hollow point-style bullet that contains a pyrotechnic composition similar to a flare. When fired, the smokeless powder in the cartridge ignites the tracer materiala |giving you trajectory info for up to 100 yards (and as much as 300 yards). Supernova Tracer Rounds are made in America, non-corrosive and will not harm your barrel or firearm. Order today!