I've done a bit of searching but I was wondering what the best source of info is for casting rifle boolits. I don't have a centerfire rifle right now but am really getting into .22 prone shooting with a sling. At some point I'd like to get a centerfire to try long range shooting. I was thinking of a 308 but if a particular caliber lets say a 223 cast better or performed much better with cast boolits I could be convinced to change.