I have a .223 Contender Carbine barrel that I have had for 20 years. I've never taken this barrel out and shot it. Therefore I don't know what it likes or don't like. My wife used it a few times and liked it, but she quite shooting about 12 years ago, and I don't remember what she was shooting through it. I'm thinking about using it this winter, to carry on the handle bars of my snow machine. It's short enough not to hang out on each side. I need something I can get to fast, for when I run across a wolf on the trail. something I can use before the wolf gets into cover. Need to know what bullets others are getting it to shoot well with. I would prefer 60 or 70 grain bullets if they will work, since wolves are the prime target.