| .240 Magnum Rimless |
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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 | 1920 |
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| Manufacturer | Holland & Holland |
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|
| Case type | Belted rimless |
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| Bullet diameter | .245 in (6.2 mm) |
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| Neck diameter | .274 in (7.0 mm) |
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| Shoulder diameter | .403 in (10.2 mm) |
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| Base diameter | .450 in (11.4 mm) |
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| Rim diameter | .467 in (11.9 mm) |
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| Rim thickness | .035 in (0.89 mm) |
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| Case length | 2.49 in (63 mm) |
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| Overall length | 3.21 in (82 mm) |
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| Primer type | Kynoch # 81 |
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|
|
|
|
| Bullet mass/type |
Velocity |
Energy |
| 100 gr (6 g) SP |
2,900 ft/s (880 m/s) |
1,865 ft⋅lbf (2,529 J) |
|
| Source(s): Cartridges of the World.[1] |
| .240 Magnum Flanged |
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|
| Case type | Rimmed |
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| Bullet diameter | .245 in (6.2 mm) |
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| Neck diameter | .274 in (7.0 mm) |
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| Shoulder diameter | .402 in (10.2 mm) |
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| Base diameter | .448 in (11.4 mm) |
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| Rim diameter | .513 in (13.0 mm) |
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| Rim thickness | UNK |
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| Case length | 2.5 in (64 mm) |
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| Overall length | 3.25 in (83 mm) |
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| Primer type | Kynoch # 81 |
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|
|
|
|
| Bullet mass/type |
Velocity |
Energy |
| 100 gr (6 g) SN |
2,775 ft/s (846 m/s) |
1,711 ft⋅lbf (2,320 J) |
|
Test barrel length: 28
Source(s): Kynoch Ammunition.[2] |
The .240 Magnum Rimless Holland & Holland (also known as the .240 Apex and the .240 Super Express) and the .240 Magnum Flanged are a pair of centrefire sporting rifle cartridges developed in English gunmakers Holland & Holland in the 1920s, primarily for use in hunting deer and plains game.[1]
- ^ a b Barnes, Frank C., Cartridges of the World, 15th ed, Gun Digest Books, Iola, 2016, ISBN 978-1-4402-4642-5.
- ^ Kynoch Ammunition, "Big Game Cartridges", www.kynochammunition.co.uk, archived, 15 August 2016.
