Before adding ...

[Kurt]

I see this question quite often. Steve Brooks cuts his moulds for 1/30 T/L alloy. The only thing with my bullets that change is the weight. I always wondered when I read some change diameters if this has something to do with the mould and cavity. Smaller blocks like Lyman or other production moulds plus the aluminum blocks expand more than the larger iron blocks??? also the heat range of my alloy gets turned down when I add more tin.