I don't know if he found the "perfect" scout, but he felt like the Steyr Scout was as close as it got in a production scout rifle.
I kind of wish I had bought one of those Savage Scout rifles they sold three or four years ago. It was plain, but it fit the scout concept very well.
I think Cooper thought the 308 was the best compromise for a scout rifle caliber, and that's what the Savage...and the Steyr, are chambered in.
I have read Jeff Cooper's writings for over 10 years and witnessed his single-minded pursuit (in Coopers' Commentaries) of a lightweight rifle represented by the 7 lb. Steyr Scout released to production in 1998. I have just purchased that rifle (.308 used) and will always treasure it -- as I did the man who so supported the art and science of serious shooting.
May his legacy live on and may Americans (especially Freepers) come to appreciate what he was trying to tell us for so many years: it's the shooter, not the weapon, that determines the outcome.
Jeff Cooper Steyr Scout rifle info
http://www.remtek.com/steyr/scout/scout.htm
Steyr Scout Aficionado Site
http://www.steyrscout.org/project.htm