I tried this about 30 maybe 35 years ago. Using a 457122 Lyman hollow point, I driled the hollow point out to fit a 209 shot gun primer and a little over half the depth of the boolit and filled it with 4 f g black powder with just enough room to seat and compress the powder just a little with the 209 primer. I sized the boolits first though to work in my Ruger Super Blackhawk, I don't remember the powder charge so it would have to be figured out. I went out to test them and comparing them with the plain sized boolits. I shot them into a soft dirt bank at about 50 yards and the treated boolits kicked up about 4 times as much dirt as the untreated boolits. There is not much difference in these boolits and cannon balls used in olden times except for the size. It was fun, I didn't shoot for accuracy just effect. I don't know if this is illegal or not but it was just something I had to try.