I have been fussing with such a list for, well, a long time. I'm working mostly from the 1920s timeframe forward. It is a bit tricky because there are a lot of instances where any old gun is put into a shooter's hands for a photo op, but it is not his winning gun. Doubles guns are hard to track down. It helps to have a bit of a running history on the individual shooters. Some of the legends (e.g. Mark Arie only used a Marlin) are false, so there's all of that to wade through.