Local fellow recently acquired his license to mfg these items under the name of Shoc-Shot. Bought 15 lbs in 1/2 lb containers for $4 each and it appears to be similar to above iterations such as the fertilizer and a powdered additive. I mixed one of the 1/2 jars and then poured the contents into 4 empty prescription bottles, so approx. 2 oz each. I hit the first one at 50 yds with a .223 Rem and it cratered the dirt upon detonating. The report was louder than the rifle shot and pleasantly surprizing. The flyer that came with the jars stated that this product is perfectly legal to own and use, but that setting them off near populated areas might yield a "disturbing the peace" citation. I am inclined to agree as the full 1/2 lb jar I set off was at 200 yds and the resultant boom was, to say the least, impressive. The smoke cloud that remained made it impossible to continue to shoot at that distance. There are larger sizes available, but I don't know if I can get far enough away from the "public" to set one off without a response from the local constabulary.
Got-R-Did.