Cruise, I'm not shooting gas checks on my 300 grain load. It doesn't lead at all, but it's only clocking about 1200 fps right now. I'm working up in increments so I guess we'll see how fast I can push it w/o gas checks.
I'd like to try some of your 320's, but I don't have a sizer yet. I'm just playing with commercial cast bullets right now. If/when I start really getting into shooting cast, I'll probably start casting my own.
I do appreciate the offer though.
Edit: Oh yeah, I know that some say when you firelap a rifle barrel, you take a chance of making the lead in to the rifling longer. Does firelapping do anything like this on a revolver?