.30-40 Krag

Infobox Firearm Cartridge
name= .30-40 Krag


caption=
origin= Flag|United States
type= Rifle
service= Army
used_by= Flag|United States
wars=
designer=
design_date=1892
manufacturer=
production_date=
number=
variants=
is_SI_specs=
parent=
case type=Rimmed, bottleneck
bullet=.308
neck=.338
shoulder=.423
base=.457
rim_dia=.545
rim_thick=.064
case_length=2.314
length=3.089
rifling=
primer=
is_SI_ballistics=
bw1=100
btype1=SP
vel1=2898
en1=1865
bw2=130
btype2=HP
vel2=2746
en2=2177
bw3=150
btype3=Nos Part
vel3=2575
en3=2209
bw4=180
btype4=SP
vel4=2276
en4=2071
bw5=200
btype5=RN
vel5=1974
en5=1731
test_barrel_length=
balsrc= Hodgdon [http://data.hodgdon.com/cartridge_load.asp .30-40 data at Hodgdon Online] ]

The .30-40 Krag/.30 U.S./.30 Army/.30 Government was a round of ammunition developed in the early 1890s to provide the US armed forces with a new, powerful round to fire from the rifle it was going to select in the 1892 trials. Since the round it was replacing was the .45-70 Government, the round was considered "small-bore" at the time. The rifle selected was ultimately the Krag-Jørgensen. It was the first round used by the US army designed for smokeless powder.

The rimmed 30-40 round was also known as .30 Army, .30 U.S., or .30 Gov't. The .30-40 Krag was the first smokeless powder round adopted by the U.S. military, but it retained the "caliber-charge" naming system of earlier black powder cartridges, i.e., the .30-40 Krag employs a .30 caliber (7.62 mm) bullet propelled by 40 grains (2.59 g) of smokeless powder. As with the .30-30 Winchester, it is the use of black powder nomenclature that often leads to the incorrect assumption that the .30-40 Krag was once a black powder cartridge.

In 1899, the .30-40 was used to shoot the world-record Rocky Mountain elk. The record stood until the latter half of the 20th century.

Rifles and Handguns Chambered in .30-40 Krag

*Krag-Jørgensen
*Winchester High-Wall
*Remington-Lee
*Remington Rolling Block
*Winchester Model 95
*Ruger No. 1
*Thompson-Center Encore

ee also

*List of rifle cartridges
*.30-03 (.30-45)
*.30-06 Springfield
*7 mm caliber other cartridges of similar size.

References

* Barnes, Frank C; Skinner, Stan (Ed.) (1965, 1969, 1972, 1980, 1985, 1989, 1993, 1997, 2000, 2003). "Cartridges of the World" (10th ed.). Iola, Wisconsin: Krause Publications. ISBN 0-87349-605-1.
* [http://www.reloadbench.com/cartridges/3040k.html .30-40 Krag] at The Reload Bench
* [http://www.chuckhawks.com/30-40krag.htm .30-40 Krag] by Chuck Hawks
* "Hornady Handbook of Cartridge Reloading vol I, Sixth Edition"; Book by Hornady Mfg Co, 2003
* [http://www.stevespages.com/jpg/cd3040krag.jpgCartridge Dimensions] at Steve's Pages