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.400 Whelen - Wikipedia

From Wikipedia, the free encyclopedia

.400 Whelen

Type

Rifle

Place of origin

United States

Production history

Designer

Townsend Whelen

Designed

early 1920s

Specifications

Parent case

.30-06 Springfield

Ballistic performance

Bullet mass/type	Velocity	Energy
300 gr (19 g) SP	2,300 ft/s (700 m/s)	3,522 ft⋅lbf (4,775 J)
350 gr (23 g)	2,100 ft/s (640 m/s)	3,430 ft⋅lbf (4,650 J)

Source(s): 350gr - Barnes^[1]

The .400 Whelen cartridge was developed by Colonel Townsend Whelen while he was commanding officer of Frankford Arsenal in the early 1920s.^[2] The cartridge resembles a .30-06 Springfield case necked up to .40 caliber to accept bullets manufactured for the .405 Winchester.

Design

Colonel Whelen asserted the very small remaining portion of the .30-06's 17° 30′ angled shoulder was likely to cause potentially dangerous headspace difficulties.^[3] The headspace issue has been widely discussed. Frankford Arsenal machine shop foreman James Howe necked down cylindrical brass available in the arsenal manufacturing process to form cartridges with a .458-inch-diameter (11.6 mm) shoulder to fit the chamber of his rifles. Experimenters had less success forming cartridges by enlarging the necks of .30-06 cartridges with .441-inch-diameter (11.2 mm) (or smaller) shoulders,^[4] but could form brass from .35 Whelen cases.^[5]

Quality Cartridge has manufactured unformed, cylindrical empty brass cases headstamped for this cartridge.^[6]

Performance

Griffin & Howe chambered custom-built rifles for this cartridge; and using neck resizing with cases carefully fire formed to the chamber in which the loaded cartridges were to be used, these rifles were reportedly very effective for killing elk, moose, and bear at ranges up to 400 yards (370 m).^[3]

References

^ Barnes, Frank C. (1997) [1965]. McPherson, M.L. (ed.). Cartridges of the World (8th ed.). DBI Books. p. 190. ISBN 0-87349-178-5.
^ Donnelly, John J. (1987). The Handloader's Manual of Cartridge Conversions. Stoeger Publishing. p. 529. ISBN 978-0-88317-269-8.
^ ^a ^b Sharpe, Philip B. Complete Guide To Handloading (1953) Funk & Wagnalls pp.206&398
^ "Smashing the Headspace Myth". Michael Petrov. Archived from the original on 2010-12-03. Retrieved 2010-08-05.
^ Howell, Ken (1995). Designing and Forming Custom Cartridges. Precision Shooting. p. 326. ISBN 0-9643623-0-9.
^ "Catalog" (PDF). qual-cart.com - Quality Cartridge. Archived from the original (PDF) on 2010-09-26. Retrieved 2010-08-06.

External links

Wikimedia Commons has media related to .400 Whelen.

Cartridges derived from the .30-03 Springfield

Prototype

.30-01 Thick-Rim

First generation

Based on .30-03 Springfield	.30-06 Springfield

Second generation

Based on .30-06 Springfield	.250 Savage .25-06 Remington 6.5-06 A-Square .270 Winchester .280 Remington .30-06 JDJ .338-06 .35 Whelen .400 Whelen .44 AMP .50 BMG wildcat cartridges

Third generation

Based on .250 Savage	.22-250 Remington 6 mm XC .250 Ackley Improved .300 Savage
Based on .280 Remington	.280 Ackley Improved
Based on .50 BMG	.416 Barrett .460 Steyr .510 DTC EUROP .55 Boys 14.5mm JDJ

Fourth generation

Based on .300 Savage	.308 Winchester/7.62×51mm NATO
Based on .22-250 Remington	.22-250 Ackley Improved

Fifth generation

Based on .308 Winchester	.22 CHeetah .243 Winchester 6.45×48mm XPL Swiss .260 Remington 7mm-08 Remington .307 Winchester .308×1.5-inch Barnes 7.62×51mm CETME .338 Federal .358 Winchester .45 Raptor

Sixth generation

Based on .243 Winchester	.243 Ackley Improved
Based on .307 Winchester	.356 Winchester .308 Marlin Express
Based on .308×1.5-inch Barnes	.22 BR Remington 6mm BR .30 BR

Seventh generation

Based on 6mm BR	5 mm/35 SMc 6mm Dasher 7mm BR Remington
Based on .22 BR	.20 BR

Eighth generation

Based on 7mm BR Remington	.338 Whisper

.30 Thompson Center

Category:

Pistol and rifle cartridges

Hidden categories:

Design

Performance

See also

References

External links