You probably have a point Euc - whether 20/80 (I'm turning this ratio round!) is probably academic but I am sure that a huge percentage of gun owning folks would be in the ''handgun and rifle'' - one of each category.
I have something like 67 guns I think all told - and reckon I am most certainly in the minority grouping
This rule reminds me of the ''helper deal'' at gun clubs - where the ratio is more 10/90 - ask for help to get stuff done and out of total membership - maybe (if lucky) 10%
might respond!!!