Winchester Ammo Super X 300 Blackout subsonic rounds deliver the legendary stopping power you expect from Power-Point ammunition in a purpose-built subsonic load. The 200-grain soft-point bullet is engineered to expand reliably at subsonic velocities—1060 fps from a typical rifle barrel—making these rounds ideal for suppressed shooting, hunting in noise-sensitive areas, or applications where you need rifle-class energy without supersonic crack. Power-Point bullets have earned their reputation through decades of field performance on game, and this 300 Blackout load carries that reliability into a modern, versatile platform.
The 300 Blackout was purpose-designed around subsonic performance. Unlike full-power rifle rounds adapted to subsonic speeds, these Winchester loads are built from the ground up to perform at that velocity window. The 200-grain soft-point is heavy enough to retain energy and momentum at subsonic speeds, and the bullet construction ensures consistent expansion in the velocity range you're actually achieving. That means better, more predictable terminal performance than you'd get by simply loading down a standard cartridge.
Each box contains 20 rounds; you'll receive 10 boxes per case for convenient restocking or range supply. Whether you're running a suppressed hunting rifle, zeroing a new subsonic build, or stocking up for regular practice, this ammunition bridges the gap between specialty ammo scarcity and practical reliability. Winchester's quality control and manufacturing consistency mean you can load, aim, and trust the result.
Ammunition Restrictions:
You must be 18 years or older to purchase shotgun or rifle ammunition, and 21 years or older for handgun ammunition. All ammunition must be shipped via Domestic Ground, and shipping is not available for international residents. Residents of CA, DC, IL, MA, NY, CT, and NJ may be subject to additional restrictions. Always ensure you use the appropriate ammunition for your firearms, and check your state and local laws for any other relevant regulations on firearms and ammunition. Due to Department of Transportation regulations, returns on ammo cannot be accepted. Please verify local laws before placing an order.
We are unable to ship ammunition to the following:
Illinois residents must provide a copy of a valid FOID Card or Valid Concealed Carry License, along with their IL driver’s license or IL state identification card to purchase ammunition. The ammunition can only be shipped to an address listed on either of those two documents.
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Winchester
Winchester
Winchester
Winchester
