Re: 7WSM neck Dia.
Only you can answer that,you need to measure a loaded round,with the same bullet you intend to use.Brass neck thickness varies quite a bit from lot to lot.If you are going to use a bushing die,you need to turn all your necks down to the same size,or your neck tension will vary.The problem with bushing dies,is they shove all the imperfections to the inside of the case neck,which affects tension,that's why turning necks is very important with those kinds of dies.