Winchester is introducing a new cartridge named.....the .350 legend. It appears to be a straight walled .223 case tapered to .357 diameter. That's all I know on this new intro. I assume Winchester is trying to fill a perceived gap for the states only allowing straight walled cases for deer hunting
I'm glad to see it. I was considering building one anyway and went so far as to neck up .223 to .357 and play with seating various bullets. Then I found I wasn't the only one. It's called the .357 Max AR. It's the fastest, lightest recoiling round you can shove into an AR in a straight wall, .35" minimum state. https://mdws.forumchitchat.com/?forum=645266
You can buy Starline .223 basic brass and forget all the forming.
