Federal Premium Vital-Shok 460 S&W Magnum Ammo 275 Grain Barnes XPB HP Lead-Free ammo review offers the following information; For nearly a century Federal Ammunition has put its focus on manufacturing quality products with cutting edge technology. This dedication to excellence has given Federal a competitive edge as an ammunition technology giant. Today the company is well known for producing high grade centerfire, rimfire, and shotshell ammunition that shooters everywhere know and trust.Quality hunting ammunition designed for maximum performance and reliability. Premium hunting bullets are matched with select powders, primers and brass to create a reliable, hard-hitting hunting cartridge. Loaded with the Barnes XPB pistol bullet, this load 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 like no other bullet in the world. This ammunition is new production, non-corrosive, in boxer-primed, reloadable brass cases.