Are you sure about the chambering? Are you sure it isn't 257 Roberts? I am not going to say it isn't a 270 Roberts, but that would be a wildcat that it might be hard to find dies for. .257 Roberts on the other hand is factory available ammo.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.