They work well. I've probably shot 50 or more with that bullet. Like others said, it is tougher than the poly bullets. I punched through a shoulder and exited through the hind quarter once at about 175yds with one. The downside is that they aren't a real efficient shape, wind drift is bad with them. I shot them alongside my AR 223 with 55gr V max bullets that have a similar BC on paper and got several inches more drift in real life.