If your 28 is nice you should probably leave it as-is. The one I'm having converted to .41mag is a beater that had already been round butted, had the barrel changed (but it rubs on the cylinder), and has some misc marks and dings from being knocked around. It was either get another 28 barrel and try to make something useful out of it or make something better, because it was no good the way it was. Had it been a solid gun that was a good shooter I wouldn't have messed with it.
Don't kiss smiling dogs!