Summary
The .30-06 JDJ is a firearm cartridge designed by J.D. Jones of SSK Industries.
| .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 | 60,000 psi (410 MPa) | |||||||||||||||||||
| Ballistic performance | ||||||||||||||||||||
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| Test barrel length: standard SSK-manufactured barrel Source(s): Cartridges of the World[1] | ||||||||||||||||||||
Overview edit
The .30-06 JDJ is an improved form of the .30-06 Springfield cartridge designed for use in the Thompson Center Arms Encore platform. The body taper of the parent cartridge has been almost entirely eliminated in the JDJ design. The shoulder has also been blown forward considerably, with the angle sharpened to 60 degrees. These design features, reminiscent of the earlier .30 Gibbs, greatly increase the powder capacity of the cartridge over its parent. As a result, a 15” Encore pistol chambered in the .30-06 JDJ can safely equal the performance of a 24” rifle in the .30-06 Springfield.[1]
Quality Cartridge offers headstamped brass for the .30-06 JDJ,[1] which can also be fireformed using standard .30-06 cases. SSK Industries currently offers Hornady Custom Dies for the chambering.[2]
Gallery edit
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.30-06 JDJ cartridge next to its parent case, the .30-06 Springfield.
