That's just the thing, the word "likely" is relative and open to debate. Exactly when is something considered "likely" to cause signifiant bodily harm or death. When it has a 50% or greater of causing such stuff? If that's the case I would agree that handguns would fall into that category but what about if you're just using your hands and body? Would the courts see your hands and body as being "likely" to cause significant bodily harm or death?Lethal force is defined, in a legal setting, as force likely to cause significant bodily harm or death. A handgun can most assuredly cause significant bodily harm or death, even if it's not automatically fatal.
That's all fine and good but often you need certain in depth knowledge in addition to all that stuff mentioned in the legal definition of a reasonable person, to be able to understand something.And, in a legal setting, a "reasonable person" is someone with ordinary judgment, education, intelligence, and reason. Legal Definition of REASONABLE PERSON