I bought some QuickShock when it first came out. I was highly impressed with the size of the exit wound on a squirrel.
A few months ago I did a comparison test of all the .22 ammo I had lying around. Several brands, various speeds, solids and hollow points.
In my particular Ruger 10-22, the Q.S. gave me the tightest groups at 25 yards.
FWIW, Art