[quote=ImportantNobody]
It's easier to use vague terms then knowing the exact caliber of different types of weapons that can get confusing if you don't have a lot of gun knowledge such as myself.
[/quote]

I guess, though I'd flip a massive desk if I saw a character literally tank hundreds of 25mm autocannon rounds without so much as a flesh wound being the end result.

EDIT: Well, unless it was a high-tier character. 

Then ok.