I have had and still have one, a S&W 610 with 5.5" barrel, shot like a laser with .40 S&W and 10mm, but my M29 beats it, now my Glock 20 started off as a pig, and now is coming to roost as a good shooter with 15rd capacity, I use Imr800X, the best powder for very hot loads, and mine are nuclear, and I will not publish them. All loaded with brand new components, and I have Bomar sights installed. 10mm is a great round, but not as good as a .44mag, but the extra rounds count for something. The 165grn gold dot at the moment seems the bullet of choice, although the 180 - 200 grns are showing promise. I have the Nosler 135's going 1700 fps, and they recoil the worst.