Other than neck reaming, you can try shorter brass or do as I have done, try a Lee Factory Crimp die which crimps the offending tight spot on the end of neck right where it jams, or convert it to a factory type extractor which won't stick. The problem is the .379" cast probably won't shoot good anyway, .380" are better, .381" are best, more than likely neither will chamber without neck reaming, 4D rents the reamer.
Tim