i posted a while ago about using lee 105g cast boolits (6 cavity swc mold for the 38 special) in my 380acp. well i was at the loading bench today, and i was having a heck of a time, but only with some of them. as it turned out, i was extremely lucky the first time i loaded these up, and all the cases turned out to be either winchester, or r-p cases. today, i got some magtec (cbc) and a few starline mixed in, and they really goofed things up. the internal taper of the brass is different on the later two, and the boolits do not want to seat consistently, plus, these boolits actually swell the case a bit at the bottom of the boolit. so, if you are going to use this combination, be sure to check your brass. and only use winchester or r-p (remington). of course none of this would be necessary if lee just made a 102g (380) r.n. bullet mold in a 6 cavity mold. i just R-E-F-U-S-E to sit there all day to make a batch of bullets 2 at a time!