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Revolver · Not SAAMI standardized · Not standardizedObsolete

.500 Linebaugh Maximum

Also known as .500 Maximum

.500 Linebaugh Maximum is a rimless straight-walled revolver cartridge of United States origin.

Caliber
0.512″ · 13.005 mm
Introduced
2001
Case
Rimless
Primary use
Hunting, Self-Defense
Status
Discontinued
Obsolete
Obsolete

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Velocity1,388–1,553 fps
Energy1,757–2,347 ft·lb
Identity
Introduced
2001
Type
Revolver
Origin
United States
Inventor
John Linebaugh
Manufacturer
John Linebaugh
Standard
Not SAAMI standardized · Not standardized
SAAMI
Not SAAMI standardized
Obsolete
Obsolete
Status
Discontinued
Availability
Rare
Build
Case capacity
72.3 gr H₂O
Twist (typical)
1:18
Primer
Large Pistol
Case type
Rimless
Pressure & range
Max pressure
36,300 psi, SAAMI transducer
Eff. range
50 yd
Max range
250 yd
Recoil
44.2–55.3 ft·lb

Ballistics

Representative trajectory · velocity only, no drag model · 100 yd zero0–500 yd
-140" -120" -100" -80" -60" -40" -20" 0" Line of sight 0 yd 50 yd 100 yd 150 yd 200 yd 250 yd 300 yd 350 yd 400 yd 450 yd 500 yd 100 yd zero 144″ drop @ 500 yd
Drop Zero

Velocity only, no drag model: no published ballistic coefficient is on file for .500 Linebaugh Maximum, so this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.

Open 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.

Wikipedia · approximate
Measuremmin✓
Bullet ⌀ 13.010.512 ·
Neck ⌀ 13.810.544
Shoulder ⌀ n/a
Shoulder angle n/a
Base ⌀ 15.190.598
Rim ⌀ 15.240.600 ·
Belt ⌀ n/a
Rim thickness 1.830.072
Neck length n/a
Case length 40.891.610 ·
Overall length 57.252.254

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. .500 Linebaugh Maximum is highlighted below.

Missing a dimension for .500 Linebaugh Maximum? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.

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

Developed by John Linebaugh.

FAQs

What twist rate does .500 Linebaugh Maximum use?
.500 Linebaugh Maximum typically uses a 1:18 twist rate.
What bullet diameter is .500 Linebaugh Maximum?
.500 Linebaugh Maximum uses a 0.512″ (13.005 mm) diameter bullet.
Is .500 Linebaugh Maximum still in production?
.500 Linebaugh Maximum is discontinued; typical availability is rare.
What is .500 Linebaugh Maximum used for?
.500 Linebaugh Maximum is primarily used for hunting, self-defense.

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 →

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