A hard hitting round featuring a solid copper expanding bullet. 100 percent weight retention and extreme expansion make this one of the best hunting, and defensive bullets available! Boasting 17.25″ of penetration with .86″ of expansion; whether it is a trophy bull elk at 30 yards, or a home invader in the middle of the night, the 10mm 155gr. DT Lead Free SC-HP will get the job done.