223 vs 556: What’s the Difference? - Field & Stream
Oct 23, 2025 · When it comes to 223 vs 556, the question isn't which is better but are they identical? Here's a full breakdown.
5.56 NATO vs .223 Remington | Key Differences & Safety Guide …
Dec 14, 2025 · Learn the differences between 5.56 NATO and .223 Remington. Chamber pressure, safety, accuracy, and which ammo your rifle can safely shoot.
What’s the Difference Between .223 Remington and 5.56 NATO?
Apr 20, 2023 · The .223 Rem. and the 5.56 NATO are nearly identical, but not identical enough to disregard their slight differences. Those differences are unlikely to impact performance, but …
223 vs 5.56: Which One You Should Shoot In Your AR-15?
Even though many people treat the .223 Remington and 5.56x45mm NATO cartridges as interchangeable rounds, this can be a dangerous practice under the wrong circumstances. It is …
The Difference Between 5.56 & .223 - Palmetto State Armory
Learn the history and technical differences between .223 Remington and 5.56×45mm NATO, plus safety tips on interchangeability and .223 Wylde.
5.56 NATO vs .223: The Real Differences, Explained (With ...
Jul 22, 2024 · Learn the real differences between 5.56 NATO and .223 Remington here. We break down chamber pressure, dimensions, and how they're different (and the same).
5.56 vs .223: What Shooters Need to Know | Outdoor Life
Feb 19, 2025 · Though the 5.56mm NATO and .223 Remington cartridges are essentially identical externally, there are two key differences. First, the 5.56mm NATO is loaded to higher chamber …