What twist rate does .40-60 Maynard Everlast use?

.40-60 Maynard Everlast typically uses a 1:20 twist rate.

What bullet diameter is .40-60 Maynard Everlast?

.40-60 Maynard Everlast uses a 0.417″ (10.592 mm) diameter bullet.

Is .40-60 Maynard Everlast still in production?

.40-60 Maynard Everlast is obsolete; typical availability is antique.

What is .40-60 Maynard Everlast used for?

.40-60 Maynard Everlast is primarily used for hunting.

Lindcott Armory

Rifle · Obsolete

.40-60 Maynard Everlast

Also known as 40-60 Maynard Everlasting · .40-60 Maynard

Maynard Everlasting cartridge for Maynard single-shot rifles.

Caliber: 0.417″ · 10.592 mm
Introduced: 1882
Case: Rimmed
Primary use: hunting
Status: Obsolete

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VelocityBeing verified

EnergyBeing verified

Typical grains260 gr

Identity

Introduced: 1882
Type: Rifle
Origin: United States
Inventor: Edward Maynard
Manufacturer: Maynard Arms
Standard: Obsolete
Status: Obsolete
Availability: Antique

Build

Case capacity: 65 gr H₂O
Twist (typical): 1:20
Primer: Large Rifle
Case type: Rimmed

Pressure & range

Max pressure: 18,000 psi
Eff. range: 200 yd
Recoil: 12–18 ft·lb
Subsonic: Capable

Ballistics

Published velocity/energy data isn't available for .40-60 Maynard Everlast — an obsolete/collector cartridge.

Performance

Best for Withheld until verified

Dimensionscase measurements · scale drawing · size vs familiar rounds

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

SAAMI · approximate

Measure	mm	in	✓
Bullet ⌀	10.59	0.417	~
Neck ⌀	11.38	0.448	~
Shoulder ⌀	n/a
Shoulder angle	n/a
Base ⌀	11.53	0.454	·
Rim ⌀	13.54	0.533	·
Belt ⌀	n/a
Rim thickness	—	—
Neck length	n/a
Case length	55.88	2.200	~
Overall length	58.42	2.300	·

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. .40-60 Maynard Everlast is highlighted below.

Factory loads

Verification

Being verified

Advertised FPS, energy, and BC are withheld until loads clear verification.

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.

Connected reference

FirearmsFirearms in .40-60 Maynard Everlast

History

An everlasting-design Maynard single-shot cartridge from the 1880s. Designed for repeatable precision target shooting at extended ranges. One of many Maynard cartridge variants that served the American target shooting community before standardization eliminated specialty cartridges.

FAQs

What twist rate does .40-60 Maynard Everlast use?: .40-60 Maynard Everlast typically uses a 1:20 twist rate.
What bullet diameter is .40-60 Maynard Everlast?: .40-60 Maynard Everlast uses a 0.417″ (10.592 mm) diameter bullet.
Is .40-60 Maynard Everlast still in production?: .40-60 Maynard Everlast is obsolete; typical availability is antique.
What is .40-60 Maynard Everlast used for?: .40-60 Maynard Everlast is primarily used for hunting.

Sources & provenance

Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 2 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →