.223 Remington vs 5.56x45mm NATO
The .223 Remington vs 5.56x45mm NATO comparison involves two cartridges that share the same dimensions but differ in pressure specifications. The 5.56 NATO (55gr at 3330 fps) produces 542 ft-lbs at 500 yards, while the .223 Remington (64gr Polymer Tip at 3020 fps) carries 355 ft-lbs. The 5.56 drops 39.4 inches at 500 yards versus 58.5 inches for the .223. Both produce minimal recoil around 5 ft-lbs. The .223 is loaded to lower pressures for sporting rifles, while 5.56 NATO runs at higher pressures for military specifications. A 5.56 chamber safely fires .223 ammunition, but shooting 5.56 in a .223 chamber may cause pressure issues. Performance varies with ammunition selection and barrel twist rate.
Ammunition Parameters
.223 Remington Parameters (Self-Defense Load)
5.56x45mm NATO Parameters (Self-Defense Load)
.223 Remington vs 5.56x45mm NATO Ballistics Chart
Comparing bullet drop at various ranges between .223 Remington and 5.56x45mm NATO.
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.223 Remington vs 5.56x45mm NATO Energy Comparison
Comparing the muzzle energy and energy retention at various distances between .223 Remington and 5.56x45mm NATO.
.223 Remington vs 5.56x45mm NATO Bullet Penetration
Comparison of estimated penetration depth in 10% ballistic gel between .223 Remington and 5.56x45mm NATO at self-defense distances.
Self-Defense Ammunition Penetration
Notes:
- FBI standard for optimal penetration is 12-18 inches in 10% ballistics gel
- Our penetration data is calculated using mathematical models based on sectional density, velocity, and expansion factors. While not actual gel tests, our calculations have been validated against manufacturer test data and provide reliable estimates for comparison purposes.
- Actual results may vary depending on clothing barriers and other factors
.223 Remington vs 5.56x45mm NATO Recoil
Comparing recoil energy and impulse between .223 Remington and 5.56x45mm NATO.
.223 Remington Recoil (Self-Defense Load)
5.56x45mm NATO Recoil (Self-Defense Load)
Notes:
- Recoil calculations based on bullet weight, velocity, powder charge, and firearm weight
- Recoil energy indicates the felt force when firing the weapon
- Recoil impulse represents momentum transfer during firing
- Actual felt recoil can vary based on grip, stance, and firearm design
.223 Remington vs 5.56x45mm NATO Velocity
Velocity decay from muzzle to 500 yards for .223 Remington and 5.56x45mm NATO.
.223 Remington vs 5.56x45mm NATO Average Cost
Comparing cost per round and training affordability between .223 Remington and 5.56x45mm NATO.