Am I missing something here? Is the .45 Colt the same as the .45 Long Colt? I see loading dies labeled as one or the other and want to make sure I get the right one for reloading for my SAA. Also, on eBay I see a lot of single dies for the .45 Long Colt for sale. I know RCBS makes make a set of dies. Why sell a single die? Thanks!