At the ranges you are shooting any mushrooming ammo that shots accurately from your rifle at the ranges you mention with be fine. Any spire type bullet is unpredictable when shooting in brush. Large bullets such as 45/70 are not much better. I would rather let a deer walk than risk a non lethal shot. I might get beat up for this but I dont see it nessasary to have a softball size hole blown slap through a deer to kill it.