I killed a cow elk with a 2nd year deluxe. Used the long extinct 200 grain Remington Mushroom Cor-Lokt hp. This was Remington's attempt at a controlled expansion bullet. I caught her at the back rib as she was running away and found the bullet in the lungs. Perfect mushroom. My son-in-law shot a buffalo using an old Winchester 250 grain Silvertip. Both instances, animals down quickly.
