Well, as soon as the weather breaks (or at least get about 32 for a day) I will be trying out some Hammerhead SPW slugs that I moly coated. I will be chronographing them against same slug load without moly. Should be interesting to see if any increase in velocity. I also will be trying some mica coated slugs for comparison against moly. Heck, if I get 25-50 fps increase, I'll take it. Kind of interesting trying to apply bottleneck cartridge methods to slug reloading. Some of it works and some just hits the backstop somewhere. Curious if anyone has tried anything like this before and if so what were the results.