I shot 2 coyotes with the 210g VLD out of my 300 RUM going 3000fps. 120 yards, and 275 yards. Both exits were size of pie plate. That would indicate rapid expansion. Shot them into wet newspaper at 100 and 200 yards and was getting 25-40% weight retention. They were penetrating every bit as far as a "hunting" bullet though. The SD is pretty high for 210g so that probly helps out a lot. I wouldn't hesitate to use them on game up to 400lbs.