Things I liked: Weight, accuracy, copper coating, quality and uniformity of pellets. Delivers a great deal of energy down range upon impact - a real skull crusher. I bought these for killing pesky coons around the house/neighborhood, and yes, it will definitely drop dead with good shot placement. I'm using a Gamo Bone Collector .22 cal and these pellets shoot real well with this gas piston air rifle.
Things I would have changed: Should get more for price it's at. IMO, I don't like the tin can it comes in, I'd like to see a screw top or snap on cap instead.
What others should know: Gotta be careful when loading, some may slide out while loading rifle. But shoots great and makes really accurate consistent groupings. And I'll say it again, lots of energy down rage. Im shooting from 20yds minimum with a Gamo Bone Collector .22 If you're looking for hunting pellets you gotta buy these n try em out.