401 Winchester Self-Loading 1946 Style Win Box Ammo
- Maker: Winchester
- Model: Ammo
- Caliber: .401 WSL
- Description: This is a full box (18 Native WRA Co. headstamp and 2 Western for a total of 20 rounds) of .401 Win SL. Housed in the 1946 style Winchester yellow and red box this was the last loading of the round by them before it was discontinued in 1955. The ammunition is in excellent condition and the box good with one detached flap and the other missing.