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Hornady 7X57MM 139 GMX SF, 20 Rounds/Box

Hornady 81556 Rifle Rounds Zoom

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Model #: 81556

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Hornady Superformance Rifle Ammo for Hunting/Target. 7x57mm Mauser, 139 GR, GMX. Box price, 20 Rounds/Box.
This product is out of stock and we do not have an expected date when it will be back in stock.

Full Description


    Superformance ammunition is 100 to 200 fps faster than any conventional ammunition on the market today, and achieves this performance in every gun, without increases in felt recoil, muzzle blast, temperature sensitivity, fouling or loss of accuracy. Superformance is a cutting edge technological advancement in ammunition design that transcends convention and achieves the highest performance of any 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. In order to get more velocity in the past, shooters have used a brute force approach with large charge weights of a slow burning powder in a larger cartridge case which leads to more recoil and muzzle blast. The Superformance solution utilizes specialized powders at normal charge weights, that impart all usable energy to the bullet reducing the rocket nozzle effect at the muzzle while still increasing velocity. Superformance provides increased performance, and is safe to use in all firearms, including semi-autos, lever gun and pump actions.
    Caliber 7X57mm Mauser
    Bullet Type GMX
    Bullet Weight 139 GR
    Muzzle Energy 2317 ft lbs
    Muzzle Velocity 2740 fps
    Rounds Per Box 20
    Boxes Per Case 10
    Casing Material Brass
    Purpose Hunting/Target
    Product Model Superformance

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