I was just in the dungeon looking for something else and I found an as new vintage box of 50 Kynoch solid bullets (not ammo) in their compartmentalized box labeled "Kynoch .450/400 Nitro Express 400. grain Solid Bullets". They measure .4095. What do you suppose they might be worth today? The box has a stamped purple "WARNING Keep out of the reach of children" so they can't be too old but I've had them since the early 1960s. So let that be a lesson children - if you are loading for your dad and the elephant is charging be sure and tell him you're very sorry.