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Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition for Self-Defense, Medium Game Up to 13% Off

Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81296
Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo
Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81296
Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81296
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Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81296
Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo
2 of 3 images
Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo
Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81296
3 of 3 images
Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81296

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Questions & Answers
Is this ammo ok to use on a 5.56 1/8 twist 16inch barrel?

I can't see any logical reason why you couldn't but consider the fact that these were made with the intention of being fired out of a SBR ranging from 7.5-12.5 at the max so performance and reliability may vary. You'd be better off exploring the hundreds of other loads from Hornady or other manufactures that are comparable in price and have far better performance your specific twist and barrel length.

by K2, Verified Owner, March 30, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Hornady Black 75 grain by Brad, Verified Owner, August 5, 2026
Great consistent ammo. Performs well in my setup. packaged nice. Only complaint is ammo handling charge and slow shipping time. Would think it would not take that long to box up ammo and get it out. Especially when they charge you the ridiculous ammo...
Read More...
1/1 found this helpful
Helpful Positive Review
Best Performance in SBRs by Target7.62, Verified Owner, March 4, 2024
I get much better accuracy with this ammo in my 7.5 and 10.5 inch barrels that with the 55 grain FMJ. I tried some rounds into wet newspaper and it really expands. I'm using this as my go to self defense round from now on. Surprisingly it's no louder...
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Premium projectile and powder load for your SBR by Lone Ranger, October 28, 2023
This stuff was a game changer for my suppressed MK18. Really clean low flash powder properly charged to match an SB AR. Hard hitting, accurate at SBR distances and lends itself to a suppressed platform nicely. Minimal fouling, nearly zero flash which...
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BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR by MPGunther, Verified Owner, April 20, 2025
My go to self defense ammunition. Reliable and accurate ammo at a good price from Optics Planet
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My thoughts by Buck, November 4, 2023
I purchase most of my ammo from Optics planet i always, literally always get my ammo well packaged and received in a timely manner! Never a single issue and ive ordered thousands of rnds over a couple yrs. Totally recommend!!!
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Product Info for Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition

5.56 Nato 75 gr InterLock HD SBR Black is designed specifically for 10.5"-11.5" SBR?s by using proprietary propellant technology and a bullet designed with technology from industry leading Critical Duty FlexLock bullets. This round provides exceptional ammunition performance in SBR?s suppressed or unsuppressed with virtually no flash or residue dramatically reduced sound signature will not foul or overheat suppressors uniform velocity and accuracy and provides controllable rate of fire in automatic platforms. Designed to meet the requirements of the FBI protocol this round is the optimum choice for 10.5"-11.5" barreled 5.56 rifles.image

Buy Hornady ammo to get bullets that are accurate, consistent, and always dependable.

WARNING: California`s Proposition 65

Specifications for Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition:

Manufacturer: Hornady
Caliber: 5.56x45mm NATO
Bullet Type: Spitzer Flat Base
Bullet Weight: 75 grain
Cartridge Case Material: Brass
Muzzle Velocity: 2310 ft/s
Muzzle Energy: 897 ft-lbs
Application: Medium Game, Self-Defense
Package Type: Box
Primer Style: Centerfire
Sectional Density: 0.214
G1 Ballistic Coefficient: 0.23

Features of Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition:

  • High-Quality Cases, Primers Propellant
  • Versatile Hornady bullet options
  • Optimized performance from various platforms

Package Contents:

  • Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition

What is Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition good for?

The manufacturer thinks that it is best for self-defense, medium game.

Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition Orderable Models

List of Orderable Models

  • Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81296 , MPN: 81296 , UPC: 090255812961 , Code: 0H-LAR-81296
  • Hornady BLACK 5.56x45mm NATO 75 grain InterLock HD SBR Brass Cased Centerfire Rifle Ammo , MPN: 81296-KIT1 , Code: 0H-LAR-81296-81296-KIT1
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Last updated 2026-09-06 UTC.