Thanks for the replies, everyone. I found a guide online for using IMR Trailboss in bottle-necked rifle rounds. I might experiment with that for a while and see how I like it. I will probably eventually pick up the 32 S&W adapter just because I have a a 32 handgun and I already reload for it. These adapters really aren't all that expensive, and I think it will provide a good excuse to get to the range and tinker.