I want a 357 Mag seat die to use in conjunction with my 38 Special set up so I don't have to reset everything each time. I use both SWC and the Ranchdog bullet that is a fat RNFP. I've had great results for 25 years using my Lee set but they don't seem to sell just the seat die and I'd prefer to not buy a whole new set. Anyone have any experience with the RCBS seat die or the Hornady? Looks like the Hornady comes in both a Cowboy type and regular. They say that the cowboy one is set up for lead bullets, but the regular one comes with different seaters so I don't know the difference in the two. I've been looking at used RCBS die sets but they usually note that it's for SWC and I'm not convinced that it won't mess up the fat Ranchdog slug. Any opinions?