I bought one box of the Win "Hyper velocity something or other." [Went and looked -- 'Expediter.'] The claimed velocity is 1640 fps. It was like shooting buckshot at 50 yards with my CZ, MK II and Rem Model Five. More than a 1 inch group or 1.5 inches. I would not like to try to hit a squirrel or gopher at that range consistently. I also picked up a couple boxes of CCI Stingers at 1640 fps. I was not excited about the accuracy of them either. Your results may vary, but I still have part of that Win box and a box and a half or so of the CCI left to shoot up sometime in my Henry when I am just messing around. VH man:

 

I purchased a brick of these a month ago. They shoot incredible groups out of all of my .22s !
I have shot 8 woodchucks with this load at ranges from 50yds out to 120yds.
9 shots, 8 dead woodchucks! The one that took two shots was hit poorly (120 yd shot) but was anchored solidly at the shot and didn't move much before I could get there for the coup de gras.
I tried, but could not find any exit holes. A lot of blood exiting, just couldn't find any of the holes.

CPL Lou

 

I am quite impressed with that ammo out of my new CZ 455. I achieve under half inch groups with it at 50 yards and for that,it is my go to hunting ammo over my previous CCI Mimi Mags that were giving me 3/4 inch groups or worse.The Winchester HE seem most consistant with the tighter groups,at least in my rifle.

 

grouped ok out of my 10/22 but i would not recommend it for anything you intend to eat. not much was left to fox squirrel at 25 yards and lots shrapnel left in meat.

 

Deadly on raccoons.