In my experience, the Bisley grip guns roll, but perhaps less than the plow handle single action grips. Not a problem either way. The biggest issue, IMO, with a single action revolver is the long lock time due to the heavy hammer fall. That requires more "follow through" than a good double action revolver shot single action. Dry firing is good practice, but you also probably want to shoot with reduced loads. If you reload, that is easy: load with light cowboy type loads. If you don't reload, you may have to search for inexpensive cowboy type loads.