What twist rate does .43 Spanish Reformado use?

.43 Spanish Reformado typically uses a 1:20 twist rate.

What bullet diameter is .43 Spanish Reformado?

.43 Spanish Reformado uses a 0.4539″ (11.53 mm) diameter bullet.

Is .43 Spanish Reformado still in production?

.43 Spanish Reformado is obsolete; typical availability is antique.

What is .43 Spanish Reformado used for?

.43 Spanish Reformado is primarily used for military.

Lindcott Armory

Rifle · Obsolete / Non-standard

.43 Spanish Reformado

Also known as 43 Spanish Reformado · .43 Remington Spanish · .43 Spanish

Spanish military cartridge for Remington Rolling Block rifles.

Caliber: 0.4539″ · 11.53 mm
Introduced: 1871
Case: Rimmed
Primary use: military
Status: Obsolete

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VelocityBeing verified

EnergyBeing verified

Typical grains370 gr

Identity

Introduced: 1871
Type: Rifle
Origin: Spain
Inventor: Spanish military
Manufacturer: Spanish Military
Standard: Obsolete / Non-standard
Status: Obsolete
Availability: Antique

Build

Case capacity: 90 gr H₂O
Twist (typical): 1:20
Primer: Berdan Large Rifle
Case type: Rimmed

Pressure & range

Max pressure: 18,000 psi
Eff. range: 300 yd
Recoil: 12–18 ft·lb
Subsonic: Capable

Ballistics

Published velocity/energy data isn't available for .43 Spanish Reformado — 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.

Wikipedia · secondary source

Measure	mm	in	✓
Bullet ⌀	11.53	0.454	·
Neck ⌀	12.34	0.486	·
Shoulder ⌀	n/a
Shoulder angle	n/a
Base ⌀	13.34	0.525	·
Rim ⌀	16.03	0.631	·
Belt ⌀	n/a
Rim thickness	2.16	0.085	~
Neck length	n/a
Case length	57.40	2.260	·
Overall length	77.72	3.060	~

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. .43 Spanish Reformado 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

Loads19 factory loads for .43 Spanish Reformado FirearmsFirearms in .43 Spanish Reformado

History

Spain adopted the Remington Rolling Block rifle in 1867, chambered for this black powder cartridge. After military modernization with the Mauser system in 1893, the cartridge was adapted (Reformado) by altering existing rifles for a modified round. Used in Spanish colonial conflicts through the late 19th century.

FAQs

What twist rate does .43 Spanish Reformado use?: .43 Spanish Reformado typically uses a 1:20 twist rate.
What bullet diameter is .43 Spanish Reformado?: .43 Spanish Reformado uses a 0.4539″ (11.53 mm) diameter bullet.
Is .43 Spanish Reformado still in production?: .43 Spanish Reformado is obsolete; typical availability is antique.
What is .43 Spanish Reformado used for?: .43 Spanish Reformado is primarily used for military.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 5 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →