M14: you didn't say what range it was? If that's 25 yards, that's pretty amazing. Even if it's 17 yards, it's still outstanding.
I shot my 6" 686 with UltraDot last night in bullseye leage (25 yard, standard NRA target B-8). I have brand new classes and an "iris" peep hole sighter on and I can count the wrinkles in the target it's so clear. I use target sighting and zeroed in on the "X" for alignment and my first shot went right through it and the X disappeared (some luck involved obviously). I ended up shooting 296/300 on that target. I don't have a digital camera so I can't post it, but that's my best group yet.