My gun club is one of the few nationally that shares range space with our local sheriff's department. We ask them as a courtesy when we intend to do something out of the ordinary. They warned us, when we told them about this stuff, that if they got complaints from neighbors, we would have to stop using it. We were given some of this stuff from one of the manufactures, for our youth shooting sports program. The stuff we received is designed for centerfire rifles, and definitely takes a high velocity round to set it off. It is ring your ears loud, even with hearing protection, at a hundred yards. Some of the deputies wanted to try some with handguns. It wouldn't go off, even with Plus-P's. They then made up a big charge, and had the S.W.A.T. team shoot it with their tactical rifles, at two hundred yards. The S. O. got phone calls from Lakeport three miles away. The ground at the sight of the detonation was absolutely cleared for about forty yards in all directions, there wasn't a blade of grass left standing. If it hadn't been for a tall berm between our rifle range, and the S.O.'s pistol range, the windows in their classroom would have been toast. This stuff turns common gravel, and small rocks, into shrapnel if the charge is set off on the ground, so we always hang ours on a target frame, for safety.
I don't think you could make this stuff go off with a hit from a muzzleloader. Indirect hits with centerfire rifles sometimes don't set it off.
Hungry Horse