Well, I just got back from the range. I shot 6 boxes of the Aguila High Velocity Ammunition 22 LR 38 Grain Plated Lead Hollow Point, and some Winchester Super x 22 LR 40 grain high velocity rated 1300 fps for comparison (40 rounds).
Well, the Aguila was consistently superior. Though I shot over 300 of the Aquila vs 40 of the Winchester, the Aguila groups out of both a Mark III and a 10 22 (both stock) were superior. I was shooting off of a benchrest for both. I didn't bring calipers, but at 25 yards, I was getting about 1/2 inch 10 shot groups with the aguila, and as good as my eyes would do with iron sights on the pistol, about 1 inch. The Winchesters were about 50% larger out of both the pistol and the rifle. One important note is that the Wins were "super speed" high velocity. Anything HV has produced larger groups for me than standard velocity.
Interestingly, I gave 10 to a guy with a CZ to try against his Wolf target ammo, and the Aquila was at least equal.
So, for $33, I'll definitely buy more.
Pretty impressive.