9.5mm is what i hunt with when i do , some argue that lead is better , but i dont like it at all , it is heavier and delivers more mass , but whe use that when 9.5mm is also awesome ? it is easy t make yourself though (lead) but STEEL ! all the way for me
Bounces off trees just like any other hard surface. Wear safety glasses always. I have taken plenty of doves with 3/8 steel, just don't shoot further than you can reasonably hit with confidance. We all have fly aways now and then but that should be the exception. Good hunting.