I use the Lyman 225415 cast gascheck bullet cast of hard alloy with 4 grains of Unique foir a load that's in the .22 LR category. It doesn't mess up a pelt. The factory Hornet ammo is ALL made for as explosive an expansion as can be gotten, none of it is made with the idea of preserving pelts in mind! Any bullet with a MV of much over 2000 FPS can really mess up fur, even if it is a full-metal jacket!