The Sonic Boom SBTHP10P Rifle Exploding Target features a 0.50 lb target designed for use with centerfire rifles. Each pack contains 10 exploding targets that utilize high-quality, non-hazardous, non-toxic chemicals for explosive effects. To initiate the explosion, the target must be struck with a centerfire rifle projectile weighing at least 40 grains and traveling at a minimum of 2200 fps. The targets are easy to mix and use, providing one of the largest explosions and loudest booms on the market.Key FeaturesQuantity: Comes in a pack of 10 targets.Exploding Style: Designed to produce a large explosion and loud sound upon impact.Easy to Use: Simply mix the two-part chemical mixture and shoot.