Rifle cartridge
| .307 Winchester |
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| Type | Rifle |
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| Place of origin | United States |
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| Designed | 1982 |
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| Manufacturer | Winchester |
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| Produced | 1982–present |
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| Parent case | .308 Winchester |
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| Case type | Rimmed, bottleneck |
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| Bullet diameter | .308 in (7.8 mm) |
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| Neck diameter | .344 in (8.7 mm) |
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| Shoulder diameter | .454 in (11.5 mm) |
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| Base diameter | .471 in (12.0 mm) |
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| Rim diameter | .506 in (12.9 mm) |
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| Rim thickness | .063 in (1.6 mm) |
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| Case length | 2.015 in (51.2 mm) |
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| Overall length | 2.560 in (65.0 mm) |
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| Maximum CUP | 52,000[1] CUP |
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| Bullet mass/type |
Velocity |
Energy |
| 180 gr (12 g) Super-X Power-Point |
2,510 ft/s (770 m/s) |
2,519 ft⋅lbf (3,415 J) |
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The .307 Winchester cartridge was introduced by Winchester in 1982 to meet the demand of .300 Savage performance in a lever-action rifle equipped with a tubular magazine. It is nearly dimensionally identical to the more common .308 Winchester cartridge, the only differences being a rimmed base and thicker case walls.
