I think most are necking down the 300wsm or necking up the 270wsm and fire forming to get their brass. the 7wsm brass seems to be non existent and its to bad because its an excellent cartridge . There are several manufacturers making brass for 270 and 300 yet, Winchester seems to be the only one making it for the 7wsm. If you are unfamiliar with the process of making the brass you need ,start a thread here . This site has lots of experts that will gladly help you through that process. Sorry I was unable to help you with what you really needed.