.30-06 JDJ
| .30-06 JDJ | ||||||||||||||||||||
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| Type | Rifle | |||||||||||||||||||
| Place of origin | United States | |||||||||||||||||||
| Production history | ||||||||||||||||||||
| Designer | J.D. Jones | |||||||||||||||||||
| Specifications | ||||||||||||||||||||
| Parent case | .30-06 Springfield | |||||||||||||||||||
| Case type | Rimless, bottleneck | |||||||||||||||||||
| Bullet diameter | .309 in (7.8 mm) | |||||||||||||||||||
| Neck diameter | .335 in (8.5 mm) | |||||||||||||||||||
| Shoulder diameter | .455 in (11.6 mm) | |||||||||||||||||||
| Base diameter | .470 in (11.9 mm) | |||||||||||||||||||
| Rim diameter | .457 in (11.6 mm) | |||||||||||||||||||
| Rim thickness | .0433 in (1.10 mm) | |||||||||||||||||||
| Case length | 2.457 in (62.4 mm) | |||||||||||||||||||
| Overall length | 3.311 in (84.1 mm) | |||||||||||||||||||
| Primer type | Small rifle | |||||||||||||||||||
| Maximum pressure | (around) 60,000 psi | |||||||||||||||||||
| Ballistic performance | ||||||||||||||||||||
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| Test barrel length: standard SSK-manufactured barrel Source(s): Cartridges of the World[1] | ||||||||||||||||||||
The .30-06 JDJ is a firearm cartridge designed by J.D. Jones.
Overview[]
The .30-06 JDJ is a modified .30-06 Springfield cartridge designed to be used in the Thompson Center Arms Contender single-shot pistol. The idea behind it is to replicate the ballistics of a .30-06 fired from a rifle in a Contender pistol.[1]
Currently, the .30-06 JDJ is not offered by any manufacturers. Cases and bullets for it can be purchased from various companies for handloaders.
Description[]
Compared to a default .30-06 round, the .30-06 JDJ contains has a smaller neck that is at a 60-degree angle. However, the biggest difference is that the .30-06 JDJ has little body taper compared to the original .30-06 cartridge. This allows the .30-06 JDJ to hold an extra 5 grains of water (4.875 cm3) compared to the .30-06 Springfield, allowing one to put more gunpowder into the cartridge.[1]
This round manages to replicate in a pistol the ballistics of a .30-06 round fired from a rifle. For example, a .30-06 JDJ cartridge with a 200-grain bullet fired from a custom Contender has a muzzle velocity of 2,504 ft/s (763 m/s), while a regular .30-06 cartridge with a 200-grain bullet with 55 grains of gunpowder has a velocity of 2,558 ft/s (780 m/s).[2]
Gallery[]
.30-06 JDJ cartridge next to its parent case, the .30-06 Springfield.
See also[]
References[]
- ^ a b c Barnes, Frank (2012). Cartridges of the World (13th ed.). Iola, WI: Gun Digest. p. 270–271. ISBN 978-1-4402-3059-2.
- ^ "Nosler". Archived from the original on 2012-10-06. Retrieved 2012-09-25.
- Pistol and rifle cartridges
- JDJ cartridges