I won't go back to a ladle, to slow and too much work. Besides, ladleing constantly exposes new metal to the air, which accelerates the tin oxidizing out of the melt. I've used ladleing when I didn't have a pot, and find it as desirable as having teeth pulled (I don't have a tooth left in my skull, so it's an honest comparison.)
Try preheating your mold and instead of holding the sprue plate against the pour spout, hold it about 1/2 to 1 inch below the spout. I have used this method for years with complete satisfaction and used both aluminum and iron/steel molds.
Don't be afraid to run the metal hot either. If you are getting frosted bullets that's a good thing. I'm convinced those gun rag pictures are cast with alloy which has no antimony in it, something like 20:1 maybe. I've never had good success with WW and tin making nice shiney bullets.
I've had 3 Lee bottom pours over the years, no complaints. I just wish they held more metal. The high price furnaces would keep me out of the casting game. I do hear they are nice though.
FWIW,
John