Is .400 Taylor Magnum still in production?

.400 Taylor Magnum is obsolete; typical availability is collector.

What is .400 Taylor Magnum based on?

.400 Taylor Magnum is derived from the .505 Gibbs case.

Wildcat · Wildcat

.400 Taylor Magnum

Also known as 400 Taylor Magnum

Intermediate development cartridge between the .505 Gibbs and the .408 Cheyenne Tactical — a modified/necked-down .505 Gibbs..

Case: Rimless
Parent: .505 Gibbs
Status: Obsolete

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Identity

Type: Wildcat
Origin: United States
Standard: Wildcat
Status: Obsolete
Availability: Collector

Build

Case type: Rimless

Pressure & range

Eff. range: 600 yd

Ballistics

Published velocity/energy data isn't available for .400 Taylor Magnum — an obsolete/collector cartridge. Parent case: .505 Gibbs.

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

Measure	mm	in	✓
Bullet ⌀	—	—
Neck ⌀	9.53	0.375	~
Shoulder ⌀	—	—
Shoulder angle	—	—
Base ⌀	—	—
Rim ⌀	—	—
Belt ⌀	n/a
Rim thickness	—	—
Neck length	—	—
Case length	—	—
Overall length	—	—

Missing a dimension for .400 Taylor Magnum? 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.

Powder $/lb Charge (gr) Bullet $/ea Primer $/ea Brass reuses Brass $/ea

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

Lineage

Family TreeOpen .400 Taylor Magnum in the interactive cartridge family tree

Connected reference

FirearmsFirearms in .400 Taylor Magnum

History

The documented intermediate step in the .408 CheyTac lineage; explains why the .408 CheyTac is not a one-step neck-down of the .505 Gibbs.

FAQs

Is .400 Taylor Magnum still in production?: .400 Taylor Magnum is obsolete; typical availability is collector.
What is .400 Taylor Magnum based on?: .400 Taylor Magnum is derived from the .505 Gibbs case.

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 →