.500/450 Nitro Express

The .500/450 Magnum Nitro Express is a large bore centerfire rifle cartridge developed by Holland & Holland.

.500/450 Nitro Express

Type

Rifle

Place of origin

England

Production history

Designer

Holland & Holland

Designed

late 1890s

Specifications

Parent case

.500/450 Magnum Black Powder Express

Case type

Rimmed, bottleneck

Bullet diameter

.458 in (11.6 mm)

Neck diameter

.479 in (12.2 mm)

Shoulder diameter

.500 in (12.7 mm)

Base diameter

.570 in (14.5 mm)

Rim diameter

.645 in (16.4 mm)

Rim thickness

0.040 in (1.0 mm)

Case length

3.25 in (83 mm)

Overall length

3.91 in (99 mm)

Case capacity

141.4 gr H₂O (9.16 cm³)

Primer type

Berdan #40

Ballistic performance

Bullet mass/type	Velocity	Energy
480 gr (31 g) SN	2,175 ft/s (663 m/s)	5,050 ft⋅lbf (6,850 J)

Source(s): Barnes.

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