Just order online. No lines cheap price points and with in ten days you have your ammo.
You can order straight from Winchester. I know its nuts all these guys buying up every round they can get, but this happens every time you friendly neighborhood politicos decide to start talking control and limitation. Remember when ole slick did the same thing in the 90s. It was as nuts as it is now.
Another good source is gun shops. If you have shooting specialty shops they have it or will order it for ya.

I have no faith in human perfectability. I think that human exertion will have no appreciable effect upon humanity. Man is now only more active - not more happy - nor more wise, than he was 6000 years ago. Edgar Allan Poe