No, he obviously was not libertarian, as shown in "Chirping Sectaries" (which someone posts whenever the GOP loses an election). I'm saying that he was insufficiently cognizant of Burke's insight that tradition evolves in human societies through contact with the real world.
I think Kirk understood Burke very well. Both were deeply suspicious of people who think they have the perfect, logical system on which to reorganize society, so neither would have had much truck with today's libertarians ("Complete free trade! It's perfect! Automatically makes everybody richer!" "Open borders...'cause nobody else has a right to tell me where to go" "Legal drugs...'cause nobody has a right...." --you get the idea.) Burke defended institutions which were anything but ideal, like the British monarchy and aristocracy, because he feared radical change and supported institutions which grew organically out of societal history and were supported by custom. Very few people on FR these days seem to understand or support this brand of conservatism.