I've had mixed results with them. The very early ones tended to be soft and expand/fragment very quickly. 165gr. out of a .308 left a shallow crater behind the shoulder of the deer I shot, minimal lung damage. Second shot to the neck finished the deer. A few years later, a 115gr. out of a .257 roberts cratered the patch of white below the chin of a doe at 85 yards. She was killed a couple days later by the landowner, large rip in the neck, perforated windpipe, no blood vessels damaged. Most recently, a 150 gr. from the same .308 as above penetrated the body completely, broke the offside leg, and the deer made one spasmodic leap and died, with jellied lungs and a blown up heart. The ones loabeled 'hunting' have been made tougher than that original 165 gr, and I wouldn't hesitate to use them anymore.
