at 21 yards, my Ruger Mark III did what I thought impossible: steel target shooting at 21 yards. CCI 40 grain Mini-Mag bullets tore into those heavy disks with resounding "pings" and actually knocked them over. I think I was more elated by my hits than by the virtue that I actually knocked them down solidly. Caused me a newly-found respect for .22 LR prowess. I never considered myself a "pistol-shot," but damn! A ten-round mag worked out well against eight steel disks. This ratio allowed me to take-down any stragglers. During this type shot, one's feet must never stop moving forward. Quite Amazing Results, I think, for a .22 rimfire. Cliffy