Frontier 223 Rem 55gr FMJ 20

Product Description

Frontier 223 Rem 55gr FMJ is a .223 Remington centerfire ammunition loaded with 55-grain full metal jacket bullets, packaged in 20-round boxes for range use and training.

This load delivers the performance characteristics shooters expect from the .223 Remington cartridge in a full metal jacket configuration. FMJ bullets are widely chosen for range work because they feed reliably and produce consistent results across multiple firearms platforms.

Whether you shoot an AR-15, bolt-action rifle, or another platform chambered in .223 Rem, this ammunition suits extended practice sessions and high-volume shooting days.

Key Facts

• Caliber: .223 Rem
• Bullet Type: FMJ (Full Metal Jacket)
• Grain Weight: 55 Grain
• Rounds per Box: 20
• Brand: Frontier

What 55 Grain FMJ Means for Your Shooting

The 55-grain bullet weight is one of the most common choices in .223 Remington. It offers a practical balance between velocity and recoil, making it well-suited for newer shooters and experienced marksmen alike.

Full metal jacket construction means the lead core is encased in a copper or copper alloy jacket. This design promotes cleaner feeding through semi-automatic actions and reduces lead fouling in the barrel compared to exposed-lead bullets.

FMJ bullets are not designed for expansion, which is why they are the standard for range training rather than defensive or hunting applications.

Choosing the Right Ammunition for Range Training

When you plan to fire dozens or hundreds of rounds in a single session, reliability and cost-effectiveness matter. FMJ loads like this one are engineered to cycle through semi-automatic rifles with minimal malfunctions.

The .223 Rem chambering is standard in many modern sporting rifles. Most firearms marked “.223 Rem” can safely fire this cartridge.

For shooters stocking up, explore additional ammunition options to compare calibers and load types.

Ordering from Western Sport

Order online and it ships straight to your door. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: Is Frontier 223 Rem 55gr FMJ suitable for an AR-15?

A: Yes, Frontier 223 Rem 55gr FMJ is suitable for AR-15 rifles and other firearms chambered in .223 Remington. The FMJ bullet profile feeds reliably through semi-automatic actions, and the 55-grain weight is one of the most widely used in this platform.

Q: Can I use 223 Rem ammunition in a 5.56 NATO chamber?

A: Most firearms chambered in 5.56 NATO can safely fire .223 Rem ammunition, but not all .223 Rem chambers can fire 5.56 NATO. Check your firearm’s markings and owner’s manual, or send us a message to confirm compatibility for your specific rifle.

Q: What is the difference between FMJ and hollow point bullets?

A: FMJ bullets have a lead core fully encased in a metal jacket and do not expand on impact, making them ideal for range training and target shooting. Hollow point bullets are designed to expand upon impact and are typically used for defensive or hunting purposes rather than practice.

Q: Is 55 grain the best bullet weight for .223 Rem?

A: The 55-grain bullet weight is the most traditional and widely used in .223 Rem, offering a versatile balance of velocity and recoil for general range use. Heavier bullets like 62-grain or 77-grain options may perform differently depending on your rifle’s twist rate and intended use, so the best choice depends on your specific firearm and shooting goals.

Additional information