General Julian Hatcher, a noted forensic pathologist, in the early 1900’s developed a good formula to determine the theoretical stopping power of a firearm cartridge. His formula has withstood the test of time and validation from other studies and data related to stopping power. You want a handgun cartridge that has a Hatcher value of over 50 for the most effective stopping power. Values over 55 have diminishing returns in that you don’t gain any significant increase in stopping power for the extra recoil and control you must cope with. Handgun cartridges that don’t make a value of at least...