I find I get more consistent balls with my mold on the hot side too. I have molds for 250 grain .50 caliber and 300 grain .54 caliber REALs that I've never used.

They're single cavity molds that I bought when Lee discontinued the single cavity ones. They had them on sale on close-out on the Lee web site for $15 shipped. Bought them because of the price and "just in case" I needed them.

I'm sure I can cast a better quality bullet than the ones I bought back before I had these molds. Guess I'll have to give them a try the next I have the lead pot fired up.