I have two Redding body dies for my 243ai. I was going to sell one and was asked if it was a small base die and I said I dint think but I would check. The dies are marked differently and I wanted to know what is the difference. One is marked 243imp 40* body 2t the other is 243imp 40* v2. Can anybody tell me the difference? The length is different inside and outside also. One I got by itself the other one came with the competition match bushing neck die set.