| .400 Legend | ||||||||
|---|---|---|---|---|---|---|---|---|
 Comparison of some straight-wall, left to right: .350 Legend, .360 Buckhammer, .400 Legend, .450 Bushmaster | ||||||||
| Type | Rifle | |||||||
| Place of origin | United States | |||||||
| Production history | ||||||||
| Designer | Winchester Ammunition | |||||||
| Designed | 2023 | |||||||
| Manufacturer | Winchester Ammunition | |||||||
| Produced | 2023–present | |||||||
| Specifications | ||||||||
| Case type | Rebated, straight | |||||||
| Bullet diameter | .4005–.0030 in (10.173–0.076 mm) | |||||||
| Land diameter | .390 in (9.9 mm) | |||||||
| Neck diameter | .4267 in (10.84 mm) | |||||||
| Base diameter | .440 in (11.2 mm) | |||||||
| Rim diameter | .422 in (10.7 mm) | |||||||
| Rim thickness | .049 in (1.2 mm) | |||||||
| Case length | 1.65 in (42 mm) | |||||||
| Overall length | 2.26 in (57 mm) | |||||||
| Rifling twist | 1 in 16 in (410 mm) | |||||||
| Primer type | Small Rifle | |||||||
| Maximum pressure (SAAMI) | 45,000 psi (310 MPa) | |||||||
| Ballistic performance | ||||||||
| ||||||||
| Source(s): SAAMI[1] | ||||||||
The .400 Legend, also called 400 LGND (10x42mmRB), is a SAAMI-standardized straight-walled intermediate rifle cartridge developed by Winchester Repeating Arms. The cartridge was designed for use in American states that have specific regulations for deer hunting with straight-walled centerfire cartridges. It is designed for deer hunting out to a maximum effective range of 300 yards (270 m).