Rifle cartridge
| .500/450 Nitro Express |
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| Type | Rifle |
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| Place of origin | England |
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| Designer | Holland & Holland |
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| Designed | late 1890s |
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| Parent case | .500/450 Magnum Black Powder Express |
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| Case type | Rimmed, bottleneck |
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| Bullet diameter | .458 in (11.6 mm) |
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| Neck diameter | .479 in (12.2 mm) |
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| Shoulder diameter | .500 in (12.7 mm) |
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| Base diameter | .570 in (14.5 mm) |
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| Rim diameter | .645 in (16.4 mm) |
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| Rim thickness | 0.040 in (1.0 mm) |
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| Case length | 3.25 in (83 mm) |
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| Overall length | 3.91 in (99 mm) |
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| Case capacity | 141.4 gr H2O (9.16 cm3) |
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| Primer type | Berdan #40 |
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| Bullet mass/type |
Velocity |
Energy |
| 480 gr (31 g) SN |
2,175 ft/s (663 m/s) |
5,050 ft⋅lbf (6,850 J) |
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| Source(s): Barnes.[1] |
The .500/450 Magnum Nitro Express is a large bore centerfire rifle cartridge developed by Holland & Holland.
