I think shooting is a bit different than most three letter acronym users. Except for when typing, the vast majority of our TLA's are spoken out loud. Sure, NRA is still NRA, but I never use JHP, I'll just say hollowpoint, and only add jacketed/semijacketed if there are further questions. I don't say SBR I'll just say short barreled rifle, never AWB just assault weapons ban, or 'the ban'
on the other hand, I hear a lot of people who use the three letter acronyms to an extent I think they couldn't recall what it translates as. For us, most of it is shorthand for typing. For many other passions, it is always used.