I acquired what I thought to be .250 savage cartridges at a yard sale last year. I recently purchased a rifle in this caliber and was going to make same reloads for it. I started to reload them and noticed that the bullets that were in them were .243 caliber and not .257? I took some measurements on the casings and found them not to be the same dimensions as illustrated in my reloading book. The cartridges were reloads when I got them and the bullets were cast lead. I tried to resize them in my .250 dies and achieved the .257 bullet diameter but the shoulder is still considerably shorter than it should be. Does anyone out there have an idea what these casings were supposed to be? I have looked at several .243 caliber cartridges but nothing quite seems to match. I am sure it is some type of wildcat but I don't know what. I would appreciate any help. Thanks Jared