Some time ago, a very good friend passed on a bag of .455 Webley loading gear to me when he found out I was starting to shoot that caliber. Among the grimy Bell cases and some tarnished original rounds was a Lyman 310 tool stamped 455 on the side with a worn nickel finish to it. From what elementary research I have been able to do, there seems to be very little record of these. Hopefully someone here can provide more info! I wish I had a pic however I'm a thousand km away and will be for a while. Thanks in advance.