Federal American Eagle has been a go-to training line for decades, and their 150gr .300 Blackout FMJ carries that same reliability into a newer caliber. At 1,900 fps, this is the heaviest supersonic FMJ available in the cartridge. The 150gr bullet paired with a 0.406 G1 ballistic coefficient gives it better downrange energy retention than lighter supersonic loads, making it a solid choice for shooters who want their range ammo to approximate the trajectory of heavier hunting bullets.

Federal's quality control is consistently good across the American Eagle line. Primers seat properly, case dimensions stay uniform, and velocities run close to advertised numbers. That consistency matters for shooters developing loads or confirming zero before a hunt. The brass cases are excellent reloading candidates, and Federal brass has a well-earned reputation for durability across multiple firings.

The 150gr weight sits right at the upper boundary of what .300 Blackout can push past the speed of sound from a 16-inch barrel. Shorter barrels will lose velocity faster, and some 9-inch SBR setups may see this load dip close to transonic speeds at moderate range. For standard-length rifles, though, the Federal AE 150gr FMJ is a dependable, widely available training round from a manufacturer with deep institutional trust.