Today was my first time to shoot my 20sf and I was really impressed. The gun is very accurate; I shoot it better than any of my other pistols (including my other glocks). I had one FTE out of 150 rounds which I was disappointed in; but my friend was shooting at the time so I just blamed his weak wrist. Hopefully it will not happen again. We set up 4 2x6s tied together in front of a cement block an compared FMJ ammo from the 10mm, 40cal, 45acp, and 357. The 40 and 45 only made it through two boards, but the 10mm and 357 both made it all the way through to the cement block. The 357 was definitely more powerful though because it left a big crater in the block while the 10mm just stopped after the wood. This is my new favorite pistol, I absolutely love the gun; I can hit anything I want with it. Those are the three bullets pulled from the cement block .