J.Wesbrock wrote: The only problem I’ve ever had with bullet casings or regular steel blunts is they tend to skip and deflect easily….

By shooting a head that grabs, like a Hex Head or Judo, even if my shot wasn’t dead center the bird would be knocked dead on the spot….

My experience matches your own with regard to glancing shots. Not getting much opportunity to shoot grouse, I have not tried a bullet casing blunt on them. I started using field points and so far that’s worked best. I haven’t had one glance off yet, but I get just a few chances a year so results are limited.

Living in grouse country would be sweet!