.30-06 JDJ |
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Type | Rifle |
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Place of origin | United States |
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Production history |
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Designer | J.D. Jones |
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Specifications |
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Parent case | .30-06 Springfield |
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Case type | Rimless, bottleneck |
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Bullet diameter | .309 in (7.8 mm) |
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Neck diameter | .335 in (8.5 mm) |
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Shoulder diameter | .455 in (11.6 mm) |
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Base diameter | .470 in (11.9 mm) |
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Rim diameter | .457 in (11.6 mm) |
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Rim thickness | .0433 in (1.10 mm) |
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Case length | 2.457 in (62.4 mm) |
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Overall length | 3.311 in (84.1 mm) |
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Primer type | Small rifle |
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Maximum pressure | 60,000 psi (410 MPa) |
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Ballistic performance |
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Bullet mass/type | Velocity | Energy | 125 gr (8 g) | 3,197 ft/s (974 m/s) | 2,785 ft⋅lbf (3,776 J) | 150 gr (10 g) | 2,930 ft/s (890 m/s) | 2,860 ft⋅lbf (3,880 J) | 180 gr (12 g) Speer | 2,666 ft/s (813 m/s) | 2,840 ft⋅lbf (3,850 J) | 200 gr (13 g) Speer | 2,504 ft/s (763 m/s) | 2,785 ft⋅lbf (3,776 J) | |
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 of SSK Industries.
Overview
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
See also
References
- ^ a b Barnes, Frank (2012). Cartridges of the World (13th ed.). Iola, WI: Gun Digest. pp. 270–271. ISBN 978-1-4402-3059-2.
Cartridges derived from the .30-03 Springfield
Prototype | |
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First generation | Based on .30-03 Springfield | |
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Second generation | Based on .30-06 Springfield | |
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Third generation | |
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Fourth generation | |
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Fifth generation | |
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Sixth generation | Based on .243 Winchester | |
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Based on .307 Winchester | |
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Based on .308×1.5-inch Barnes | |
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Seventh generation | Based on 6mm BR | |
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Based on .22 BR | |
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Eighth generation | |
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Related | |
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