.30 Newton

Type

Rifle

Place of origin

United States

Production history

Designer

Charles Newton

Designed

1913

Specifications

Parent case

11.2 Mauser (exact cartridge unknown)

Case type

Rimless

Bullet diameter

.308 in (7.8 mm)

Neck diameter

.340 in (8.6 mm)

Shoulder diameter

.491 in (12.5 mm)

Base diameter

.523 in (13.3 mm)

Rim diameter

.525 in (13.3 mm)

Case length

2.52 in (64 mm)

Overall length

3.35 in (85 mm)

Rifling twist

10 to 12

Primer type

large rifle

Ballistic performance

Bullet mass/type	Velocity	Energy
150 gr (10 g)	3,208 ft/s (978 m/s)	3,445 ft·lbf (4,671 J)
172 gr (11 g)	3,000 ft/s (910 m/s)	3,440 ft·lbf (4,660 J)
225 gr (15 g)	2,610 ft/s (800 m/s)	3,470 ft·lbf (4,700 J)

Source(s): Newton Arms Company Catalog. 14th Edition: 1920. IN "Cartridges of the World" Frank C. Barnes, 3rd Edition: 1972.

The .30 Newton cartridge was designed by Charles Newton for Fred Adolph, a gunsmith, in 1913, and was originally known as the .30 Adolf Express. The Newton Arms Company was the only manufacturer of commercial rifles chambered for this cartridge. It should not be confused with the .30 Belted Newton (a.k.a. .30-338), which is a different cartridge not designed by Charles Newton. Although suitable for any large North American game, it is an obsolete round no longer manufactured. Before World War II, loaded cartridges were once offered by Western Cartridge Company. Buffalo Arms currently sells unloaded brass.

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