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 brass cases. The term "50 Beowulf" is a registered trademark by Alexander Industries. Borrowing technology from the highly successful X Bullet, Barnes offers an all-copper pistol bullet. This new bullet is sure to change the face of pistol hunting forever. The Barnes XPB pistol bullet will deliver more energy than any other bullet available for handguns. In testing, penetration has been increased up to 25% over lead-core bullets, while remaining intact to expand...