American Eagle is Federal's range line, and this 223 Remington load is its bread and butter: a 55 grain FMJ at 3,240 fps, the same basic recipe the cartridge grew up on. It feeds reliably through AR pattern rifles and bolt guns alike, and Federal's production consistency keeps groups honest at 100 yards.The 200rd value pack lands between a single box and a full case, a sensible pickup before a weekend class or a full day at the range. One note for new AR owners: 223 Remington ammo like this is safe in 5.56 chambers, so it runs in just about any modern AR-15.