I posted a while back I was popping primers and couldn't figure out why....well I pinned it down. I broke out the old Ohaus 10-10 scale and my Chargemaster 1500 was throwing heavy. I didn't calibrate it before I used it because I was in a hurry and it had never let me down before. I not only popped a primer but split the base of a 6BR case. I am extremely disappointed in myself. Not only could I have damaged my equipment but my ugly face and others around me if it got really crazy. These rounds were loaded the night before my first match, what a way to shoot your first one ever. On a side note even with the HOT loads the CCI BR primers held together lol. When I finally pulled my head out of my anus and checked with the brass weights it was 5.0 GRAINS off. Im sharing my story maybe it'll make another beginner like myself double check everything before you start reloading.....Thanks again for a great site....