I've never shot KIK powder. I've heard of it. As for it being 2f grade, there is nothing wrong with that. They suggest the 2f for .50 caliber and larger. It will work just fine.

You might find that it fowls bad, but a simple swab with any kind of cleaner will take that right out of the barrel for you. Just make sure that you run a couple dry patches after a wet patch or two. I sure wish I had a friend that had that much black powder that he did not want.. some people have all the luck I guess.