Hi,
The only story I've ever heard about FFAR's being used "for real" was in something called "The battle of Los Alamedo's" or something like that... the USN lost control of a Hellcat drone flying out of Point Mugu, and the Air Force launched F-89's to take it out, as the drone was headed directly for Los Angeles... the end result, was that they fired off all of their unguided rockets, which started a couple of forest fires, and the drone kept "droning along"... eventually it crashed in an unpopulated area just outside of L.A.
The entire concept of using the rockets centered around the inability of the early jets to pull enough G at high altitude to get a lead on high performance bombers - so the concept made great sense, and really was the best that anybody could come up with before guided weapons became available, but incidents like the California episode showed just how hard it could be. Sure, a Hellcat is a whole lot smaller than a Bear or a Bison, but until the sidewinder came along, firing off unguided rockets trying to get an A/A kill was a prospect that made an awful lot of pilots say "Yeah... RIGHT!"
SB