I tried some in my Interarms Mauser action 24" bbl. rifle.  Groups were very good, about 3/4", with load data muzzle velocity close to 4K fps.  First crow I shot with them looked like a black pillow exploding and I got really tickled.  The crows feet were still clutching the powerline!  Thats all, just the feet.  Feral dogs?  None left in my neighborhood.  Feral cats ( trashbag neighbor USED to have about 50)?  Not!