| .475 A&M Magnum |
|---|
| Type | Rifle |
|---|
| Place of origin | United States |
|---|
|
| Designed | 1958–1959 |
|---|
|
| Parent case | .378 Weatherby Magnum |
|---|
| Case type | Belted, bottleneck |
|---|
| Bullet diameter | .475 in (12.1 mm) |
|---|
| Neck diameter | .502 in (12.8 mm) |
|---|
| Shoulder diameter | .560 in (14.2 mm) |
|---|
| Base diameter | .584 in (14.8 mm) |
|---|
| Rim diameter | .533 in (13.5 mm) |
|---|
| Case length | 2.90 in (74 mm) |
|---|
| Overall length | 3.75 in (95 mm) |
|---|
| Rifling twist | 1:14 in (360 mm) |
|---|
| Primer type | Boxer large rifle |
|---|
|
|
|
| Bullet mass/type |
Velocity |
Energy |
| 400 gr (26 g) |
3,227 ft/s (984 m/s) |
9,034 ft⋅lbf (12,248 J) |
| 500 gr (32 g) |
2,980 ft/s (910 m/s) |
9,900 ft⋅lbf (13,400 J) |
| 600 gr (39 g) |
2,500 ft/s (760 m/s) |
8,040 ft⋅lbf (10,900 J) |
|
| Source(s): Barnes & Amber |
The .475 A&M Magnum is a rifle cartridge developed in the United States. At the time of its development it was considered the most powerful sporting rifle cartridge ever developed. However, as the .475 A&M Magnum was a wildcat cartridge, the .460 Weatherby Magnum continued to be the most powerful commercial sporting cartridge available.