I carried a Glock 20 as an Armed Security Officer. i could outshoot other officers that were sooting "shorty 40's" and 9mm pistols. (I was shooting CCI-Speer "Blazer" 200-grain TMJ loads). The Glock 20 soaked up the moderate recoil of the Blazers and I "shot rings" around them. ;D
Irritated the daylights out of them! :P
I like the 200 grain Blazer round, only the Sig 180 is better in my opinion for target ammo. Its tough to find however.