Hornady Superformance 338 Ruger Compact Magnum 225gr SST Rifle Ammo - 20 Rounds - Increase your rifle's performance up to 200 FPS without extra chamber pressure, recoil, muzzle blast, temperature sensitivity, fouling, or loss of accuracy. Superformance uses progressive propellants that take your favorite V-MAX, NTX, SST, GMX, and InterLock, bullets to levels of performance that are simply unattainable with conventional ammunition. Superformance Propellants Are The Heart Of Superformance Ammunition And Usher In A New Era Of Performance Superformance Rounds Use The Highest Quality Cases And Primers Available Consistent Components Translate To Consistent Shooting In The Field 100 To 200 FPS Faster Than Conventional Ammunition Uncompromising Accuracy Without Increased Felt Recoil Unfailing Performance Across A Broad Range Of Temperatures This New Breed Of Ammunition Is Safe For Use In All Firearm Types, Including Semi-Autos, Lever Guns And Pump Actions Browse 338 Ruger Compact Magnum Ammo.