Precision supersonic centerfire rifle cartridges.

Due to high demand and our desire to serve as many customers as possible, we are currently limiting the quantity that each individual customer may order.

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SIG SAUER supersonic rounds feature a 125gr Projectile for superior accuracy and minimal dispersion when suppressed. Consistent bullet weight retention with minimal velocity variations results from optimized shell case metallurgy with premium primers. Rounds are precision loaded using state-of-the-art, electromechanical monitoring for geometric conformity.


• You must be 18 or older to purchase rifle ammunition and 21 or older to purchase handgun ammunition.
• For safety reasons, we do not accept returns of ammunition.
• All ammunition will be shipped via ground delivery.
• Adult signature required on delivery.
• Please ensure you are purchasing and using the correct type of ammunition for your firearm.
• Check the local laws of your area for any other laws or regulations before ordering.


Ammo Type Rifle
Caliber 300 Blk
Grain Weight 125 gr
Qty Per Package 20
Muzzle Velocity 2145 fps
Muzzle Energy 1277 ft-lbs
Ballistic Coefficient (G1) 0.313


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