.500/465 Nitro Express

The .500/465 Nitro Express is a large bore centerfire rifle cartridge developed by Holland & Holland and introduced in 1907.

.500/465 Nitro Express
Type	Rifle
Place of origin	United Kingdom
Production history
Designer	Holland & Holland
Designed	1907
Produced	1907
Specifications
Parent case	.500 Nitro Express 3+1⁄4 in
Case type	Rimmed, bottleneck
Bullet diameter	.467 in (11.9 mm)
Land diameter	.459 in (11.7 mm)
Neck diameter	.488 in (12.4 mm)
Shoulder diameter	.527 in (13.4 mm)
Base diameter	.570 in (14.5 mm)
Rim diameter	.645 in (16.4 mm)
Rim thickness	.040 in (1.0 mm)
Case length	3.25 in (83 mm)
Overall length	3.91 in (99 mm)
Primer type	Berdan 0.254 inch
Ballistic performance
Bullet mass/type Velocity Energy 480 gr (31 g) 2,150 ft/s (660 m/s) 4,930 ft⋅lbf (6,680 J)
Test barrel length: 28 inches Source(s): municon.org & Kynoch

Development

The .500/465 Nitro Express is one of several rounds (including the .470 Nitro Express, .475 Nitro Express, .475 No. 2 Nitro Express and .476 Nitro Express) developed as a replacement for the .500/450 Nitro Express following the British authorities' 1907 ban of military caliber ammunition in India and the Sudan, all with comparable performance.

Holland & Holland created the .500/465 Nitro Express by necking down the .500 Nitro Express 3+1⁄4 in.

The .500/465 Nitro Express is designed for use in single-shot and double rifles.

See also

• Nitro Express
• 12 mm caliber
• List of rifle cartridges

References

Bibliography

• Barnes, Frank C. & Amber, John T., Cartridges of the World, DBI Books, Northfield, 1972, ISBN 0-695-80326-3.
• Kynoch Ammunition, Big Game Cartridges, kynochammunition.co.uk.( Archived 2013-07-03 at the Wayback Machine 2015-01-01), retrieved 30 Dec 14.
• Municon, .500/.465 Nitro Express, municion.org (Archived 2015-01-03), retrieved 31 Dec 14.
• Wieland, Terry, Nitro Express: The Big Bang of the Big Bang( Archived 2014-12-24 at the Wayback Machine 2015-01-01), retrieved 30 Dec 14.