I shot through a half gallon plastic juice bottle AND a gallon milk jug at 150 yards, both at the same time with one shot. I was hoping to recover the bullet to see the expansion. Ammo was federal bulk 36 gr HP. Obviously there wasn't much expansion if it penetrated that much. Those hps are small, though. They sure flatten out hitting steel at that range, I recovered one of those. A lot of fun at that range!