Bigbore, I just killed a bison meat cow 2 weeks ago. As far as being a challenging hunt, it isn't. Bison aren't the smartest animal in the world. Once they are located, it isn't hard to sneak up on them for a good shot. They are tough as Hell, however. My 850# cow took 3 375 JDJ 270 Gr. Hornadys to the boiler room before dying. IMPRESSIVE!! Tasty, too.