.30 Newton

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.30 Newton
TypeRifle
Place of origin United States
Production history
DesignerCharles Newton
Designed1913
Specifications
Parent case11.2 Mauser (exact cartridge unknown)
Case typeRimless
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 length2.52 in (64 mm)
Overall length3.35 in (85 mm)
Rifling twist10 to 12
Primer typelarge rifle
Ballistic performance
Bullet weight/typeVelocityEnergy
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.
 
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.30 Newton
TypeRifle
Place of origin United States
Production history
DesignerCharles Newton
Designed1913
Specifications
Parent case11.2 Mauser (exact cartridge unknown)
Case typeRimless
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 length2.52 in (64 mm)
Overall length3.35 in (85 mm)
Rifling twist10 to 12
Primer typelarge rifle
Ballistic performance
Bullet weight/typeVelocityEnergy
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 WWII, loaded cartridges were once offered by Western Cartridge Company. Buffalo Arms currently sells unloaded brass.

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