thinking about self defense again, remembering the british SAS used what was called "MayLay Loads" during their unpleasantness in Malaysia in the 50's. From what I remember it was a 12 gauge shotgun with the first shell being double "00" buckshot with the second shell being a slug etc down the 5 loads. Apparently the internet has not heard of such a thing. Wierd this was all I found using duckgogo google dindt even have this
https://thefiringline.com/forums/showthread.php?p=1208918
https://thefiringline.com/forums/showthread.php?p=1208918