A few years ago I chronographed dry vs. lubed Circle Fly wads in 12 bore RMC brass shells loaded with 1.25 ounces of lead and 27.5 gr of Longshot. The dry wads yielded erratic results: mean = 1032 fps, standard deviation = 73, while the lubed ones were much faster and more consistent: mean = 1287, SD=30. I didn't pattern these.