While taking advantage of state of the art testing equipment, this high performance ammunition by Underwood is field tested using popular, real firearms that customers are most likely to own out in the real world with all the elements you would experience. If for some reason Underwood Ammunition fails to meet performance expectations, Underwood stands by their product 100% and will make sure the customer is satisfied with every purchase. This ammunition is new production, non-corrosive, in boxer primed, reloadable nickel plated brass cases.The Underwood Xtreme Hunter (XH) was born from the incredibly popular Xtreme Defender product line. Like the XD, the Xtreme Hunter (XH) ammunition has an optimized nose flute. The difference is that weight and attained velocity have been optimized to achieve maximum penetration depth with a permanent wound cavity (PWC) that is just simply enormous. No expanding hollow point comes close to achieving anywhere near the diameter and volume of wound ch...