Calhoon cartridges

.19 Calhoon Hornet
Type	Hunting
Place of origin	USA
Production history
Designer	James Calhoon
Manufacturer	James Calhoon
Specifications
Parent cartridge	.22 Hornet
Bullet diameter	.198 in (5.0 mm)
Neck diameter	.215 in (5.5 mm)
Shoulder diameter	.286 in (7.3 mm)
Base diameter	.294 in (7.5 mm)
Rim diameter	.350 in (8.9 mm)
Rim thickness	.063 in (1.6 mm)
Case length	1.390 in (35.3 mm)
Primer type	small rifle
Ballistic performance Bullet weight/type Velocity Energy 27 gr (2 g) hp 3,600 ft/s (1,100 m/s) 777 ft·lbf (1,053 J)
Source(s): Calhoon

.19-223
Type	Rifle
Place of origin	USA
Production history
Designer	James Calhoon
Manufacturer	James Calhoon
Produced	1999
Specifications
Parent cartridge	.223 Remington
Bullet diameter	.198 in (5.0 mm)
Neck diameter	.224 in (5.7 mm)
Shoulder diameter	.364 in (9.2 mm)
Base diameter	.373 in (9.5 mm)
Rim diameter	.375 in (9.5 mm)
Case length	1.760 in (44.7 mm)
Primer type	Small rifle
Ballistic performance Bullet weight/type Velocity Energy 32 gr (2 g) hp 4,100 ft/s (1,200 m/s) 1,194 ft·lbf (1,619 J) 36 gr (2 g) HP 3,800 ft/s (1,200 m/s) 1,154 ft·lbf (1,565 J) 40 gr (3 g) HP 3,700 ft/s (1,100 m/s) 1,216 ft·lbf (1,649 J) 44 gr (3 g) HP 3,600 ft/s (1,100 m/s) 1,266 ft·lbf (1,716 J)
Source(s): Calhoon Website

.19 Badger
Type	Rifle
Place of origin	USA
Production history
Designer	James Calhoon
Designed	2001
Manufacturer	James Calhoon
Produced	2006
Specifications
Parent cartridge	.30 Carbine
Bullet diameter	.198 in (5.0 mm)
Neck diameter	.224 in (5.7 mm)
Ballistic performance Bullet weight/type Velocity Energy 28 gr (2 g) hp 3,725 ft/s (1,135 m/s) 863 ft·lbf (1,170 J) 32 gr (2 g) HP 3,550 ft/s (1,080 m/s) 896 ft·lbf (1,215 J)
Source(s): Calhoon

Calhoon cartridges are a class of .19 caliber cartridges created by James Calhoon, a firearms designer with an in interest in .19 caliber cartridges. Calhoon began working with .19 caliber after his interest was piqued from learning about British sub-caliber rifle trials in the early 1970s. .19 caliber rifles have thicker rifling than .17 and .20 caliber rifles, which helps the barrel stay clean longer and improves barrel life.

Variants

.19 Calhoon Hornet

The .19 Calhoon Hornet is a .19 caliber rifle wildcat cartridge. The cartridge is based on a necked-down blown-out .22 Hornet cartridge. This provides less stretching, and greater case capacity with a lighter bullet. The result is a flatter trajectory when compared to the .22 Hornet. Having a larger bore than the .17 caliber centerfires helps mitigate some of the fouling problems that rifles in that caliber tend to have.

.19-223

The .19-223 is the second in a set of .19 caliber rounds created by James Calhoon. The cartridge is based on a necked-down .223 Remington cartridge. This gives higher velocity and a flatter trajectory than would be found with typical .223 loads.

.19 Badger

The .19 Badger is the third (currently in 2007 the latest) of the .19 caliber rounds created by Calhoon. This was an attempt to take the best features of his earlier cartridges the .19 Calhoon Hornet and the .19-223 and create a very powerful and efficient cartridge. This cartridge is based on the rimless .30 M1 Carbine case, which has almost the same rim diameter as a .22 Hornet but has fewer potential feeding problems in some rifles because of the lack of a rim.

See also

• List of firearms
• List of rifle cartridges
• 5 mm caliber

References

• Subcaliber Stinger By Jim Matthews
• .19-223 Dimensions
• Calhoon's Amazing .19 Caliber

External links

• Calhoon Website