The Tannerite Exploding Rifle Target ProPak 10 1 lb. Target Kit is one of the most fun targets you can buy when used as directed. Tannerite is a binary explosive used primarily to make targets for firearms practice. Tannerite is unique because it is exceptionally stable when subjected to less severe forces such as a hammer blow, being dropped, or shot with a rimfire. The targets are supplied as two powders, that when carefully combined as indicated in the instructions, produce an explosive target. The two individual components are completely safe and stable by themselves, and will not explode until mixed together. Tannerite detonations only occurs when the target is hit with a bullet at high velocity, producing a large explosion and cloud of water vapor. This is useful for long range shooting practice, as you get immediate feedback when a target is hit.