"they were gun people first. It's kind of hard to have one without the other when you get right down to it, isn't it? Do you really want a holster from someone who doesn't know the butt from the muzzle."
One of the best holsters I've ever had was made for me by a shoemaker who didn't know a muzzle from a mutton.
"It seems everyone expects at least a minimum level of general knowledge what somebody selling you ammunition. Why not from somebody making you a holster?"
Define "general level of knowledge."
I expect the people at the gunshop to be able to fog a mirror (at least intermittently), know which end the bullet comes from, how find information that they don't know, and not repeat complete BS.
Anything else is a bonus.
Mike walks into the gunshop...
"I need ammo for my .982 Kerblatzensplatzer revolver, please. What? You don't know that in 1915 Spittlesplatz made automatic revolvers in .982 Kerblatzensplatzer?
WHAT? YOU'VE NEVER HEARD OF .982 KERBLATZENSPLATZER, THE FINEST GENERAL PURPOSE ROUND EVER INVENTED? ARE YOU SOME KINDA MORON WHO DOESN'T HAVE A GENERAL LEVEL OF KNOWLEDGE?"
While I agree that this guy should have been able to look up this information in either a book or the internet, not everyone has a 700 volumn firearms library (I do, but it's far from comprehensive) or access to the internet.