Handgun

.338 JDJ No. 2

One of J.D.

Caliber
0.338″ · 8.585 mm
Case
Bottleneck
Status
Wildcat
Velocity2,100–2,350 fps
Energy2,203–2,759 ft·lb · est.
Identity
Type
Handgun
Status
Wildcat
Availability
Rare
Build
Primer
Large Rifle
Pressure & range
Eff. range
200 yd

Ballistics

Representative trajectory · 100 yd zero0–500 yd
100 yd · zero0″−63″63″ drop @ 500 yd0250500Open in Ballistic Compare ↗
Parent case

Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).

Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

reloading data · approximate
Measuremmin
Bullet ⌀8.590.338
Neck ⌀9.200.362
Shoulder ⌀11.530.454
Shoulder angle25°~
Base ⌀11.940.470
Rim ⌀13.060.514
Belt ⌀n/a
Rim thickness1.600.063
Neck length8.540.336
Case length56.522.225
Overall length75.572.975

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .338 JDJ No. 2 is highlighted below.

Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Connected reference

History

One of J.D. Joness SSK big-bore Contender wildcats, throwing .338 bullets for handgun hunting.

FAQs

What bullet diameter is .338 JDJ No. 2?
.338 JDJ No. 2 uses a 0.338″ (8.585 mm) diameter bullet.
Is .338 JDJ No. 2 still in production?
.338 JDJ No. 2 is wildcat; typical availability is rare.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →