I set the seating die too low. I use a micrometer with my precision rifle loads. So I set the micrometer where it should be and, like I always do, ran a dummy round for verification. It certainly turned out to be a dummy round. Lol.love to know just how you did that AND do you think it will fire form AND what an amazing bullet that is....is that the product of a military mind, designed to penetrate 6 or seven layers of winter gear after 200 - 300 meters.....