Fastbolt:
Can you explain how this discussion has anything to do with "legal aspects of the use of deadly force?"
How can you discuss using deadly force, particularly in the form of a firearm, against a human attacker threat without also considering the legal implications regarding
how you make the decision to lawfully and appropriately
use it?
If each and every round fired may be considered a use of deadly force, does your "caliber-based training" mean you expect each and every shot of your "default training" response to always be automatically justified? Claim that 2-3 shots
had to be fired because of some inherent caliber-effectiveness standard? Even if the specific circumstances didn't support firing that "minimum number" of rounds?
Proper training may help give someone some insight regarding developing the knowledge and experience to learn how to make appropriate and better decisions for the circumstances, especially under stress.
Another poster stated:
When you condition yourself to fire X number of rounds, you will continue to do so even if more(or less) are needed.
This was a problem identified within LE firearms training many years ago. The previously ubiquitous "double tap", which wasn't an uncommon shooting response in older training practices, was eventually re-examined and its universal practicality was reasonably questioned.
Training practices had to evolve to address the potential problems of not only failing to intentionally fire
enough rounds, but also potentially
too many rounds, for any particular set of circumstances.
Nobody wants their cops killed (or retired out disabled) because they stopped shooting too soon for the particular circumstances, nor does the public want to see cops rapidly "spraying" rounds which go errant of the intended threat and endanger the safety of the general public.
Now, getting some properly organized and structured training can probably help you develop potential answers to questions like:
So you shoot until target #1 drops? What if target #2 is also slinging lead at you? ....and #3?
...
So, what do you do about the 2nd person shooting at you also??
It might be beneficial to acquire a knowledge base that includes consideration of both the "tactics & techniques", as well as the "legal" aspects, and how to best determine the appropriate "answers" that will hopefully satisfy both in anticipated situations.
Using a firearm as a dedicated defensive weapon, in the lawful use of deadly force? Not just about "technique & tactics", or gun & caliber.