Hornady Superformance 7mm 154gr7mm Rem Mag 139 gr SSTSuperformance *NOW SHIPPING AMMUNITION CALL FOR QUOTE* Item #80593 20 Box 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, InterLock, and InterBondbullets to levels of performance that are simply unattainable with conventional