One of the great virtues of the English language is its susceptibility to nuance...the same word or term can have a wide variety of well-understood meanings depending on context and tone. Jack O'Connor once wrote a hysterical piece on the multitude of Western uses of the term "son-of-a-bitch" (can I say that here?).
I think we all understand exactly what you mean, and what we mean, with the term "rifle loonie". Just like "SOB" can be a terrific term of endearment among friends, though susceptible of some misunderstanding amongst casual listeners.
I happen to like the term a lot, as seems to be the case with most of the Campfire. T-Shirts, anyone?
"The more you run over a dead cat, the flatter it gets."
"If you're asking me something technical, you may be looking for My Other Brother Darrell."
"It ain't foot-pounds that kills stuff -- it's broken body parts."
