Has anyone here tried making expanding hollow point bullets loads using black powder? I would like to try my hand at it and according to the sources I have bellow I think it is possible. The link in "firearmsnews" explains that they used a load with a 158-grain swaged lead semi-wadcutter hollow-point, so called "FBI Load", with a velocity of 799 fps out of a 2" barrel that was able to expand to .521". The next two forum sources state that a BP load for a .38 special can attain velocities of 798 fps to 850 fps out of 5" to 6" barreled guns respectively. If that is the case then I imagine that I should reasonably be able to achieve similar expansion to that of the FBI +P loads mentioned in the "firearmsnews" article if I were to make a .38 special load using the same kind of swaged HP SWC and roughly 21 grs of BP in a gun with at least a 5" barrel. I would plan to use a longer one though. Am I wrong in reasoning this? Has anyone tried this before?
https://www.firearmsnews.com/editori...e-street/77810
http://smith-wessonforum.com/ammo/47...-back-day.html
https://thefiringline.com/forums/sho...d.php?t=132938