--- title: "Hornady 5.56 NATO 55gr CX SPF Brass Ammunition" description: "5.56x45mm NATO ammunition with 55 gr CX SPF bullets and brass cases. 20 rounds per box, 3175 fps muzzle velocity, 1231 ft lbs muzzle energy." canonical_url: "https://www.kygunco.com/product/hornady-812544-5.56-nato-55gr-cx-spf" meta: author: KYGUNCO "og:description": "5.56x45mm NATO ammunition with 55 gr CX SPF bullets and brass cases. 20 rounds per box, 3175 fps muzzle velocity, 1231 ft lbs muzzle energy." "og:image": "https://cdn.kygunco.com/assets/products/201332/thumbnail.jpg?v=1713454625" "og:image:height": "500" "og:image:width": "500" "og:title": "Hornady 5.56 NATO 55gr CX SPF Brass Ammunition" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Ammunition](https://www.kygunco.com/category/ammunition) / [Rifle Ammo](https://www.kygunco.com/category/ammunition/rifle-ammo) / HRN-812544 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/201332/main.jpg?v=1713454625) For illustration purposes only, this image may not be an exact representation of the product. # HORNADY Superformance 5.56 NATO 55gr CX SPF Brass Ammunition | 20 Rounds Hornady Superformance 5.56x45mm NATO ammunition with 55 gr CX SPF bullets in brass cases. This 20-round box is listed for hunting and offers a muzzle velocity of 3175 fps and muzzle energy of 1231 ft lbs. $28.74 --- $1.44 per round ** 4 interest-free payments of **$7.18** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Fulfilled by a partner warehouse. ** Partner Fulfilled ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Item # 201332 Style HRN-812544 UPC 090255719932 Condition New Manufacturer [Hornady](https://www.kygunco.com/brand/hornady) Units Per Box 20 Caliber 5.56 NATO Weight 1 lb Hornady's Superformance uses progressive propellants that take your favorite V-MAX, NTX, SST, GMX, InterLock and InterBond bullets to levels of performance that are simply unattainable with conventional ammunition. It uses the highest quality cases and primers available which equals consistent components that translates to consistent shooting in the field. The Superformance ammunition is 100 to 200 fps faster than conventional ammunition and is safe for use in all firearm types, including semi-autos, lever guns and pump actions. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. - Caliber: 5.56x45mm NATO - Bullet Type: CX SPF - Bullet Weight: 55 gr - Muzzle Energy: 1231 ft lbs - Muzzle Velocity: 3175 fps - Rounds Per Box: 20 - Boxes Per Case: 10 - Application: Hunting - Casing Material: Brass ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Shop 5.56 NATO Firearms ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/hornady-812544-5.56-nato-55gr-cx-spf#webpage","@type":"WebPage","description":"5.56x45mm NATO ammunition with 55 gr CX SPF bullets and brass cases. 20 rounds per box, 3175 fps muzzle velocity, 1231 ft lbs muzzle energy.","name":"Hornady 5.56 NATO 55gr CX SPF Brass 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