I installed a new front sight (Marbles "gold" bead) on my Taylor & Sons/Chiappa 1892 (.357 Magnum) Wednesday, and took the gun to the range today. The sight picture through the Skinner rear sight is much improved. Mounted 8" targets at 25 and 50 yards. Shot a couple rounds at 25 yards; holes in target 2-3 inches high, about the same amount left. Drifted both sights for windage, lowered the Skinner peep ½ turn. Fired 3 rounds - good windage, still 2 inches high. Turned the peep down another ½ turn, shifted to the 50 yard target, fired 2 rounds. 2 inches high, 2 inches left. Drifted the front sight a little more, turned the peep down another ½ turn, fired 2 rounds. About an inch high, maybe an inch left. Decided to shot 3 more rounds to get a meaningful group. Nothing on the paper, though the holds seemed decent. Noticed that the barrel had become on the hot side of warm. Hah! Next time I bring it, I will shoot 3 rounds cold - make adjustments as necessary - and set the gun aside until the barrel is cold again. That seems like a pretty dramatic shift of POI; is it?