I always got frustrated when people talk about their molds raining bullets. I’ve had to beat the fire out of my molds to get the boolits dropping - it’s the bottle neck in my casting. I just had my first experience raining boolits. I used a five cavity Al NOE-454-255-SWC mold, lead was around 780F, alloy was 50/50 COWW/SOWW that I fluxed with Root Kill (0.2oz per lb of lead). At first I was beating the mold, noting sticky cavities so I could polish off burrs, wondered if this would be a mold break-in session with little output, and then quite suddenly it started raining! I got 150 boolits in a hour (including the warm-up), and letting the spruce plate cool was my bottle neck. Hopefully this mold performs like this from here on out.