Can I ask what the fbi's findings have to do with anything?
Then please do expound on your findings.
What calibers and loads have you extensively tested, which barriers did you test them through, how far did those rounds penetrate, how much weight did they retain, what did the wound cavity look like?
What weapons did you test them in, what were the result of your accuracy testing, what were the differences in time for accurate follow up shots between the various calibers tested, how did the shooters' physical attributes contribute to your findings, how did the shooters' experience levels contribute to the results?
