In terms of the measurement of the round itself, the cartridges are virtually identical. The diameter of the bullet is the same, but the casings have slight differences. Additionally, the powder load is bigger for the 5.56. This creates differences in chamber pressure when fired.
Take a look at our selection of .223 Remington and 5.56 NATO ammunition from top manufacturers. We carry the best .223 Rem and 5.56mm ammo on the market..Buy .223 / 5.56 NATO Ammo
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Buy New! Hornady-Frontier-.223 Remington
- $230.00
- Caliber:.223 Remington , Number of Rounds:5OO , Bullet Type:Hollow Point (HP) , Bullet Weight: 55 grain , Cartridge Case Material:Brass , Muzzle Velocity:3240 ft/s , Package Type:Box , Primer Location:Centerfire
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Buy Winchester DEER-SEASON-XP-Remington 64
- $250.00
- Caliber: .223 Remington Number of Rounds: 500 Bullet Type: Extreme Point Polymer Tip (EPPT) Bullet Weight: 64 grain Cartridge Case Material: Brass Primer Location: Centerfire
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Federal Premium .223 Remington 55 grain Full Metal Jacket Boat Tail (FMJBT) Brass Centerfire Rifle Ammunition 500 RDS
- $260.97
- Specifications for Federal Premium .223 Remington 55 grain Full Metal Jacket Boat Tail (FMJBT) Brass Centerfire Rifle Ammunition: Caliber: .223 Remington Bullet Type: Full Metal Jacket Boat Tail (FMJBT) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3240 ft/s Package Type: Box Application: Target
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Federal Premium FUSION .223 Remington 62 grain Fusion Soft Point Centerfire Rifle Ammunition 500 RDS
- $260.99
- Specifications for Federal Premium FUSION .223 Remington 62 grain Fusion Soft Point Centerfire Rifle Ammunition: Caliber: .223 Remington Number of Rounds: 500 Bullet Type: Fusion Soft Point (SP) Bullet Weight: 62 grain Muzzle Velocity: 3000 ft/s Package Type: Box Primer Location: Centerfire Features of Federal Premium Fusion .223 Remington 62gr. Fusion SP Rifle Ammo - 20 Rounds Copper jacket…
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Hornady Black .223 Remington 62 grain Full Metal Jacket (FMJ) Brass Centerfire Rifle Ammunition 500 RDS
- $270.99
- Specifications for Hornady Black .223 Remington 62 grain Full Metal Jacket (FMJ) Brass Centerfire Rifle Ammunition: Caliber: .223 Remington Number of Rounds: 500 RDS Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 62 grain Cartridge Case Material: Brass Muzzle Velocity: 3100 ft/s Package Type: Box Primer Location: Centerfire Sectional Density: 0.177 Muzzle Energy: 1323 ft-lbs G1 Ballistic Coefficient: 0.274 Application:…
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Hornady Frontier 5.56x45mm NATO 55 Grain Hollow Point Centerfire Rifle Ammunition 500 RDS
- $270.99
- Specifications for Hornady Frontier 5.56x45mm NATO 55 Grain Hollow Point Centerfire Rifle Ammunition: Caliber: 5.56x45mm NATO Number of Rounds: 500 Bullet Type: Hollow Point (HP) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3240 ft/s Package Type: Box Primer Location: Centerfire Sectional Density: 0.157 Muzzle Energy: 1282 ft-lbs G1 Ballistic Coefficient: 0.254 Application: Match, Varmint, Target, Self Defense
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Hornady Varmint Express .223 Remington 55 Grain V-MAX Centerfire Rifle Ammunition 500 RDS
- $270.99
- Specifications for Hornady Varmint Express .223 Remington 55 Grain V-MAX Centerfire Rifle Ammunition: Caliber: .223 Remington Number of Rounds: 500 Bullet Type: V-Max Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3240 ft/s Package Type: Box Primer Location: Centerfire Sectional Density: 0.157 Muzzle Energy: 1282 ft-lbs G1 Ballistic Coefficient: 0.245 Application: Medium Game
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PMC Bronze .223 Remington 55 Grain FMJ Boat Tail Ammunition 500 RDS
- Product Info for PMC Bronze .223 Remington 55 Grain FMJ Boat Tail Ammunition Ensure your rifle is delivering its best performance possible by using this PMC Ammunition .223 55 Grain Brass Case FMJ Ammunition. This boat tail .223 / 5.56 NATO Ammo made by PMC Ammunition are ideal for competitive shooting, target practice and even hunting since they offer a…
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Sierra GameChanger .223 Remington 64 Grain, Sierra Tipped GameKing Brass Cased Centerfire Rifle Ammunition 500 RDS
- $250.99
- Specifications for Sierra GameChanger .223 Remington 64 Grain, Sierra Tipped GameKing Brass Cased Centerfire Rifle Ammunition: Caliber: .223 Remington Number of Rounds: 500 Bullet Type: Sierra Tipped GameKing Bullet Weight: 64 grain Cartridge Case Material: Brass Muzzle Velocity: 3015 ft/s Package Type: Box Primer Location: Centerfire
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Winchester USA 5.56x45mm NATO 62 grain Green Tip (M855) Full Metal Jacket Boat Tail (FMJBT) Brass Centerfire Rifle Ammunition 500RDS
- $430.00
- Specifications for Winchester USA 5.56x45mm NATO 62 grain Green Tip (M855) Full Metal Jacket Boat Tail (FMJBT) Brass Centerfire Rifle Ammunition: Caliber: 5.56x45mm NATO Bullet Type: Full Metal Jacket Boat-Tail (FMJBT), Green Tip (M855) Bullet Weight: 62 grain Cartridge Case Material: Brass Muzzle Velocity: 3060 ft/s Package Type: Box Primer Location: Centerfire Application: Target Rounds: 500 Rounds
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