There have been some interesting developments in hit rating theorycraft since I posted my list of caps. According to this Elitist Jerks thread, miss rates are actually slightly higher than previously believed. The ranged/2H/specials miss rate is now thought to be 9% against raid bosses, and the dual-wield miss rate is 28%.
Weapon skill is believed to work differently as well. The first 5 points of weapon skill reduce your miss rate by 3%, and every 5 points after reduce it by 0.5%. (5 skill = -3%, 10 skill = -3.5%, 15 skill = -4%, etc.)
I'm inclined to believe these new numbers. Besides the evidence from experiments, this setup seems a little cleaner and more logical than the previous setup. I'll have to revise my list of caps slightly.