Probably need to ask the question in 30-40 years. Cartridges sometimes take 20 or more years to gain popularity, i.e. the 270 Win. Frequently cartridges will almost disappear from the landscape only to be resurected to great popularity. The 41 Mag, 358 Win, 264 win, 350 Rem Mag and a few others from time to time. One never knows what John Q. Gun looney will buy.
Beware of thieves, scammers and dishonest members on the "Fire" classifieds. Ya there is a thief here too. Whatever!!
