I believe that Winchester was the first to start "copper-washing" their HV 22 LR ammo. [ in the 1960's, IIRC. ]
The first Hyper-velocity round I laid eyes on was the CCI "Stinger"
Never cared much for it's accuracy, but it was [is] fast with it's light bullet. [some rifles shoot it OK, though]
It will not chamber in match chambered rifles, due to it's overlength case.
Other manufacturers jumped on the bandwagon with their own "faster" ammo.
About the time the Hyper-velocity rounds started to show up, the HV long rifle lost some of it's zest,
with advertised velocities dropping down to somewhere around 1215-1260 fps.
I have chronographed a number of 22 LR offerings, and there is quite a bit of variance in them.
Match grade ammo is very consistent, but bulk ammo can vary up to 80 fps, in my experience.
I still have one box of the old, Remington Hi-Speed ammo, the headstamp says Hi-Speed on it, lol.
Eagleye.