High antimony shot clearly patterns better than lead shot with less antimony. But the harder shot won't 'mushroom' as well as softer shot. I'm wondering if soft shot might kill game better since it mushrooms more. Steel shot which is very hard seems to just poke a hole in game and does not seem to kill that well. Also copper and nickle plated shot is even harder than high antimony shot. But does it kill better given shells with the same velocity. What do you think?