If you're determined to use a revolver, the 5" 625 would be a good one, and more accurate than an untuned or non-Gold Cup type 1911. However, you'll really be challenged in the Timed and Rapid Fire segments. As much as I love revolvers, I went to a 1911 very early on, to be competitive in Bullseye competition. You'll spend a lot of time learning to thumb that hammer back fast enough, when you could be focusing that time on sight alignment.