Next time I cast I'm going to cast some of these 457 RBs. If I can make gallery loads and not lead up my gun then I can use it. My collarbutton boolits seem to be slightly finicky to being seated just so or they're flyers.
In using the RBs for gallery loads, do I seat them flush or 1/2 way? Do you use a wad over the powder? Can these be made into a safe duplex load? (two RBs)