Well I thought I seen it all. But fellow trapshooter I see from time to time brought a 14 cal. To a trapshoot to show around. I did not see the bullets or have anytime to talk to him. But I do know the gunsmith that made it. I live about 45 mile from the Smith. I got to find out more about this cal. Assuming there must be a swager to make the bullets. The fellow that has the gun said around 5000 fps is a tack drive on a still day. Bill