Long gone. The store brands, like Ace Hardware, Sears & Roebuck, etc., etc., are now very collectible.
After Kennedy was assassinated, written log books were required for store ammo purchases, I think the stores that did most of their business selling tools and lawn mowers just decided it was too much bother to deal with the requirements. You couldn't take a box of .22 off the shelf anymore and go to the cash register, now a clerk had to get the box from behind the counter, you filled out the book and signed for it, then paid for it at the counter. All that for a forty cent box of .22 shells.
Presumably, untold numbers of homicides were prevented by this system.
I think the ATF abandoned the system as useless in the early 1970's, not sure when that occurred.
Between that and the rise of the lawsuit society, it just died out.