About 12 years ago, I wanted to get out and shoot more but didn't have a lot of cash. I bought a used Schultz & Larsen club gun from Military Gun Supply in FtW (now living at the bottom of the Gulf, unfortunately). Single shot bolt action in .22 LR. The goal was to purchase as many different types of .22 LR ( as it was readily available and fairly inexpensive at the time) and use a scientific method to 1) find the best round for my particular rifle, and 2) determine if a $20 box of Eley was really 4x better than a $5 box of plinking ammo. Tests were conducted at 50 yards and the paper was scored for group size. I also recorded velocity on a chrono for each round. Testing was done from a concrete bench with bags, outdoors. A few takeaways:
-I really, really liked the Wolf ammo (it was not their 'match' ammo, but their #2 offering). Best bang for the buck. At the time, it was about $8 /box.
-CCI Green Tag, Eley Tenex, scored just as high or slightly better, but it was in the $20-$30 range.
-the 'high velocity' stuff (Velocitor, Mini Mag etc) did not score well, nor was it very consistent (relative to my test group) on the chrono. Maybe they are better for hunting, but they did not group as well. I did some research on the subject and it seems that supersonic projectiles, when exiting the barrel and breaking the sound barrier, are subjected to some difficult to measure physics that act on trajectory.
-check on the velocities of the 'match' grade ammo, they are all generally in the 1030-1070 fps range, which is technically subsonic. Not a coincidence. Speed of sound is ~1133 fps, and there is some disagreement on the exact number.
-Anything I tried that was marked as 'Subsonic', regardless of price, did not score particularly well. They clocked in the 700-800 fps range. Stan Dev was the worst and they tended to group vertically.
-Aguila makes some really cool and fun stuff, but I would not consider anything they make to be overly accurate or repeatable.
-Rem Yellowjackets were the worst overall.
-Nothing that came in a bulk packaging (ie milk carton) did very well.
-it's entirely possible that the hi velocity stuff performs well in an autoloading platform, I just didn't test for that.
-I attempted to repeat some of these tests at 100 yards, but it was difficult to hit a 1 inch circle with iron sights at that distance. I feared there were too many variables out of my control at that distance and invalidated my findings. Maybe a tunnel and a scope...
-as I mentioned, this was over a decade ago. Maybe recipes have changed.
TLDR- buy something in the 1050 fps range for accuracy / repeatability; the 1200+ fps rounds will delivery more energy downrange, but with SOME degradation of accuracy/repeatability.