HORNADY Superformance 257 ROB +P 117 Grain SST Ammo, 20 Round Box (81353)

HORNADY Superformance 257 ROB +P 117 Grain SST Ammo, 20 Round Box (81353)


We will price match any currently priced, in stock item. In some rare instances we may not be able to match a price but will do all that we can to give you the best deal possible. (We cannot match the price if it is under our cost) Please call store at 1.800.486.7497 to check availability for immediate pickup. Please review the Terms and Conditions HERE.

Type: Rifle Ammo

  • Superformance is a cutting edge technological advancement in ammunition design that transcends convention
  • Superformance ammunition is 100 to 200 fps FASTER than any conventional ammunition on the market today
  • Superformance uses ultra progressive propellants that take your favorite SST or GMX bullets to levels of performance that are simply unattainable with conventional propellants
  • Superformance provides increased performance, and is safe to use in ALL firearms, including semi-autos, lever gun and pump actions
  • Increases in rifle performance, no increases in barrel wear and felt recoil, along with superior temperature stability are all realized with Superformance ammunition
  • Superformance ammunition is safely within SAAMI pressure guidelines. Gas operated firearms are perfectly safe to use with Superformance ammunition
  Caliber     257 Roberts +P  
  Bullet Weight     117 Grains  
  Bullet Style     SST  
  Case Type     Brass  
  Muzzle Velocity     2945 fps  
  Muzzle Energy     2253 ft. lbs.  
  H.I.T.S. # (100 Yard Value)     872  
  Ballistic Coefficient (G1)     .390  
  Sectional Density     .253  
  Rounds Per Box     20  

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