The Winchester Super-X Power Point Centerfire Rifle Ammunition is for whitetail deer hunters who are looking for efficient bullets that increase accuracy. These quality bullets pack a punch that is ideal for the hunter of larger game. This bullet is comprised of lead alloy and metal jacket. The nose is filled with soft lead alloy that is strategically assembled wide open. There is also a jagged metal jacket that works with the lead alloy surface. Together they manipulate the extent of the bullet's expansion creating a devastating effect to the target.