The Lee 405-grain flatnose bullet, in mongrel alloy, shot a quite nice group over BH209 powder; I'm going to have to try this again.
I've been using a wad under most bullets both to protect the base from powder gasses, and to prevent any possible contamination of the powder by traces of lube on the bullet base; need to load some without, and see how they work. So far as the lube goes, just carefully wiping the base clean should take care of that.
I've read a lot of debate on using a wad with smokeless powder, varying between "No big deal" and "You'll blow up your rifle!" Anything that might cause nasty pressure pulses in firing scares hell out of me, so there's that. There's also a lot of people having used a wad to either protect the bullet base(with the resized case preventing any chance of it moving further into the case), or- with light loads- using a pasteboard wad to keep the powder toward the base for more consistent ignition. The latter especially sets a lot of people off on the 'blow up' side. It does seem to improve accuracy with Green Dot, but you might get the same effect by making sure to tilt the rifle up before firing to make sure the powder is at the back.
No, I didn't think to test that before.
I want to try some of those Lee 405-grain hollowbase bullets with black powder, see how that works out.
I think that catches this mess up for now.