I needed more of the NOE 360-232 PB, and the Lee 309-230-5R, as I'm doing some interesting load development with these, in .35 Whelen and 30-06, respectively. I'll get back to you with a proper write- up once I have more solid data.
A couple of degrees below freezing, it started to snow a little during the casting session. My casting area is under a roof, but snow flakes tend to drift into my work place. The errant snow flake that enters the pot is no problem, it doesn't have the density to break the surface - only makes a little sizzle. It's the other stuff that can cause danger; your skimming spoon, your pile of cut sprues etc. You have to keep a level head, and think before you stick anything into the melt.
All went well, and I have a nice pile of bullets of mostly acceptable quality (considering somewhat demanding conditions).