Sonic Boom®'s Exploding Rifle Targets provide a unique shooting experience by creating an impressively large explosion and loud "boom" upon bullet impact. Sonic Boom produces targets with high quality non-hazardous, non-toxic, stable chemicals. The targets use a two part mixture that are easy to mix and easy to use -- simply mix and shoot. To ensure safety, shooters must be at least 100 yards from exploding target. To initiate explosion, rifle target must be struck with a center fire rifle projectile, weighing at least 40 grains and traveling at a minimum of 2200 fps (pistol rounds will not initiate these targets).