Don't have a lot of experience with Aguila stuff but will always remember trying out some of the 'hyper velocity' .22 LR, their answer to the CCI Stinger with some sort of confusing name like 'Super Ultra High Velocity' moniker or similar....
I had just gotten a c.1954 K22 and was trying a bunch of different ammo in it to see what it really liked.
I was in a place where I could shoot in the backyard pretty easily, so a fun project.

Long story short - but the K22 definitely did NOT like the Aguila hyper stuff. Report was on par with a .22 Mag. revolver and 'groups' at 20 yds. would barely stay on a 12" paper plate.
Recall a strange smell also.

The K22 really liked CCI Standard Velocity ammo, and strangely, some old Federal .22 Longs I had in my stash.

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Ret'd LEO
SWCA #2275