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The .275 No 2 Magnum, also known as the 7mm Rigby Magnum Flanged and the .275 No 2 Rigby, is an obsolete centerfire rifle cartridge developed by John Rigby & Company in 1927.
| .275 No 2 Magnum | ||||||||
|---|---|---|---|---|---|---|---|---|
| Type | Rifle | |||||||
| Place of origin | United Kingdom | |||||||
| Production history | ||||||||
| Designer | John Rigby & Company | |||||||
| Designed | 1927 | |||||||
| Produced | 1927–present | |||||||
| Specifications | ||||||||
| Parent case | .375 Flanged Nitro Express | |||||||
| Case type | Rimmed, bottleneck | |||||||
| Bullet diameter | .284 in (7.2 mm) | |||||||
| Neck diameter | .318 in (8.1 mm) | |||||||
| Shoulder diameter | .450 in (11.4 mm) | |||||||
| Base diameter | .510 in (13.0 mm) | |||||||
| Rim diameter | .582 in (14.8 mm) | |||||||
| Case length | 2.5 in (64 mm) | |||||||
| Overall length | 3.26 in (83 mm) | |||||||
| Case capacity | 75.2 gr H2O (4.87 cm3) | |||||||
| Primer type | Berdan 217 | |||||||
| Ballistic performance | ||||||||
| ||||||||
| Source(s): "Barnes."[1] | ||||||||
Overview
editThe .275 No 2 Magnum is a rimmed cartridge intended for use in double rifles. Rigby introduced the .275 No 2 Magnum by necking down the .375 Flanged Nitro Express,[2] it was still available in the early 1960s.[1] The .275 No 2 Magnum's performance is comparable to the .275 Rigby.[1]
As is common with cartridges for double rifles, due to the need to regulate the two barrels to the same point of aim, the .275 No 2 Magnum was offered in one loading, firing a 140 gr (9.1 g) bullet with a listed speed of 2,675 ft/s (815 m/s).[1]
In his African Rifles and Cartridges, John "Pondoro" Taylor rated the .275 No 2 Magnum as his favourite of all the small bore cartridges.[3]
See also
editReferences
editFootnotes
editBibliography
edit- Barnes, Frank C, Cartridges of the World, ed 13, Gun Digest Books, Iola, 2012, ISBN 978-1-4402-3059-2.
- Cartridgecollector, ".275 No. 2 Magnum (7mm Rigby Flanged Mag)", www.cartridgecollector.net, retrieved 16 December 2016.
- Taylor, John, African rifles and cartridges, Sportsman's Vintage Press, 2013, ISBN 978-1-940001-01-2.
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