The Glazer Safety Slug is also intended for home protection. Just in case you miss, it wont go through the wall and hit a family member or neighbor. Personally, I dont like to pick copper or lead or any other metal out of my game, especially when I am eating it. All the bullets I have sent into one type of medium or another shows me what I want in my ML. It wont be a jacketed bullet, that I know for sure.