1000 Rounds Federal American Eagle 5.7x28 40gr TMJ packaged in 50 round boxes - "Assembled" in USA - AE5728A

Here is a comprehensive review of the high-volume Federal American Eagle 5.7x28mm 40-grain Total Metal Jacket (Product Code: AE5728A).

For years, the biggest obstacle to owning a 5.7x28mm firearm wasn't the price of the gun—it was the steep, premium cost of feeding it. Federal single-handedly solved that problem for the civilian market by introducing the AE5728A under their rugged American Eagle banner. It is widely recognized as the industry’s go-to, high-volume range and training cartridge for the 5.7 platform.

Overview & The TMJ Advantage

While casual shooters often refer to this round as a standard Full Metal Jacket (FMJ), it is technically a Total Metal Jacket (TMJ). Traditional FMJ bullets leave a small circle of raw, exposed lead at the flat base of the bullet. Federal's TMJ design completely encases the lead core in a seamless copper jacket, including the base.

• Caliber: 5.7x28mm

• Bullet Weight: 40 grain (The standard operational weight baseline)

• Bullet Type: Total Metal Jacket (TMJ)

• Casing: Quality brass (Factory applied dry-film lubricant coating for proper extraction)

• Muzzle Velocity (Pistol / 4.8" Barrel): ~1,655 ft/s

• Muzzle Velocity (PS90 Carbine / 16" Barrel): ~2,250 ft/s

• Muzzle Energy: ~243 to 450 ft-lbs

Performance and Ballistics

1. Safer, Cleaner Indoor Training

Because the TMJ bullet completely isolates the lead core, the immense heat of the powder ignition cannot vaporize raw lead from the base of the bullet. This drastically cuts down on airborne lead exposure, making it the premier, health-conscious choice for shooters spending long training sessions inside poorly ventilated indoor ranges.

2. Ballistic Mirroring for Defense Training

Federal specifically engineered the AE5728A to mirror the velocity, pressure curve, and felt recoil of standard premium 5.7x28mm personal defense loads (like the 40-grain Hornady V-Max variants). This means your training feels 100% realistic. Your point of impact remains identical, allowing you to build reliable, high-volume muscle memory at the range without burning through your expensive defensive carry stock.

3. Smooth, Lubricated Extraction

The 5.7x28mm cartridge features a unique, bottlenecked design that operates at incredibly high pressures for a handgun round. To ensure smooth feeding and stop casings from sticking to chamber walls, Federal applies a specialized, slick coating to the brass. Fired out of an FN Five-seveN, Ruger-57, PSA Rock, or a PS90 carbine, the AE5728A cycles flawlessly and throws casings with crisp, aggressive consistency.

Pros & Cons

Pros

• Affordable High-Volume Training: Easily the most cost-effective, mass-produced factory 5.7x28mm ammo on the market for everyday range use.

• Reduced Barrel Fouling: The combination of a fully enclosed TMJ base and Federal’s exceptionally clean-burning powder means significantly less jacket and lead residue left in your rifling.

• Realistic Recoil Profiles: Provides the exact same snap, muzzle rise, and flat trajectory as premium duty rounds.

• American-Made Consistency: Built on dependable Boxer primers and reloadable brass casings with strict quality control.

Cons

• Strictly a Range Round: The solid, round-nose TMJ profile is built exclusively to punch holes through cardboard and paper targets. It does not expand or tumble dramatically in soft tissue, meaning it should not be utilized as a primary personal protection or hunting load.

• Loud and Proud: Like all 40-grain 5.7 variants, it travels well past supersonic speeds. Even out of a pistol, it barks with a sharp, loud report that will definitely grab the attention of other shooters on the range line.

The Verdict

The Federal American Eagle AE5728A is the absolute backbone of the 5.7x28mm ecosystem. It strips away the financial penalty of owning a 5.7 weapon platform, offering clean-burning, hyper-reliable, American-made target ammunition that allows you to train exactly how you carry.

• The Takeaway: AI can sometimes make mistakes, but it's never a mistake to order from Eagle Eye Guns.