400 Legend is a straight-walled centerfire cartridge introduced by Winchester in 2023, designed for deer and medium-game hunting, particularly in states that restrict hunters to straight-wall cartridges. It bridges the gap between the smaller 350 Legend and the larger 450 Bushmaster.

400 Legend is a straight-wall cartridge positioned between the 350 Legend and the 450 Bushmaster, offering more power than the 350 Legend while keeping recoil manageable for most hunters. It was created largely for deer and medium-game hunting in states that permit straight-walled cartridges but not traditional bottleneck rifle rounds, and it is designed for effective performance at short to moderate ranges. As a relatively recent cartridge, its ammunition selection is narrower than long-established rounds, though availability has grown since its introduction. It suits straight-wall-state hunters who want more power than a 350 Legend in a still moderate-recoiling cartridge.

General information about this caliber — not a recommendation for this specific firearm.