Hornady® Superformance™ .338 Winchester Magnum 225gr SST® ammo is a performance-enhanced centerfire hunting cartridge, optimized for long-range shooting applications. Features a polymer-tipped Hornady® SST boattail bullet designed to deliver consistent expansion and superior weight retention by minimizing core-jacket separation. Reloadable brass casings deliver smooth operation and reliable feeding. For optimal results with a gas-operated semi-auto firearm, it is recommended that all Hornady Superformance ammunition be paired with rifle-length gas systems and barrel lengths of 20" or longer. Any barrel and gas configuration of less than 20" is best served with the installation of an adjustable gas system, especially if firing suppressed. Made in USA.