Wes, I really doubt it's a matter of "pc". The deal is to not let the antis define the argument. Force them to use proper terms. So, for instance, when they come up with "assault weapon", you push hard that they're not talking about a real-world item. Force them to be accurate and factual.
Great, except it's still defining the argument in their terms-you're bending over backwards to prove that your definitions are correct, instead of fighting on more important issues of why we should own guns.
You're never going to win an argument on a semantics point, and that's the key here. It's just not going to happen.
Do you call AP or steel-core bullets "cop killers"? That's what the anti-gunners call them.
Ahh, but let us not forget that most generic hunting cartridges are entirely capable of defeating lower-level ballistic protection. "Armor-piercing" is a term that requires a thirty-minute lecture on ballistics, weapon types, modern protection terminology, and real-world application examples. You will *NEVER* win an argument in which you have to spend half an hour educating the other side in order to get anywhere.
To most people, the difference between a machine gun and what we know is just a plain ol' semi-auto is an "obscure technical definition".
Precisely my entire point! That's the crux of the whole issue! Your average citizen has no clue what the difference between a machinegun and a semi-automatic rifle is.
Your average citizen also does not care what the difference between a machinegun and a semi-automatic rifle is. A ten minute video explaining the differences might educate them, but the vast majority of the public simply doesn't care enough to learn. There are rare exceptions, but that's a different story.
Which means, in terms of real debate, that responding to an argument with "But your definition is wrong! The correct definition of a machinegun is..." will never work. It's a waste of time. The other side will smile and nod and then think you to be crazy. In the real world logically coherent arguments aren't worth the paper you print them on when trying to change the mind of someone willfully ignorant.