HORNADY SUPERFORMANCEA(R) 308 WINCHESTER SSTA(R) POLYMER TIPPED RIFLE AMMO Increase your rifle's performance up to 200 fps without extra chamber pressure, recoil, muzzle blast, temperature sensitivity, fouling, or loss of accuracy. SuperformanceA(R) uses progressive propellants that take your favorite V-MAX,A(R) NTX,A(R) SST,A(R) CX,(TM) and InterLock,A(R) bullets to levels of performance that are simply unattainable with conventional ammunition. FEATURES PROVEN HORNADYA(R) BULLETS - SuperformanceA(R) ammunition is loaded with HornadyA(R) V MAX,A(R) NTX,A(R) SST,A(R) CX,(TM) and InterLock,A(R) bullets for the ult Mfg: Hornady