4227 won't give the velocities that other powders might in the magnum revolver cartridges. But it does alright. The biggest plus it has is that for magnum type loads, it may be the easiest powder out there on the gun. Less flame cutting and forcing cone erosion, especially compared to H110 and 296. I established that to my satisfaction years ago shooting silhouette, and I know many others came to the same conclusion.