What twist rate does .32 H&R Magnum use?

.32 H&R Magnum typically uses a 1:16 twist rate.

What bullet diameter is .32 H&R Magnum?

.32 H&R Magnum uses a 0.312″ (7.925 mm) diameter bullet.

Is .32 H&R Magnum still in production?

.32 H&R Magnum is active; typical availability is common.

What is .32 H&R Magnum used for?

.32 H&R Magnum is primarily used for self-defense, small game.

What is .32 H&R Magnum based on?

.32 H&R Magnum is derived from the .32 S&W Long case.

What are the best powders for .32 H&R Magnum?

Reloading powders commonly listed for .32 H&R Magnum include No. 2, Bull's-Eye, Universal, HP-38, among 5 suitable options.

Lindcott Armory

Revolver · SAAMI

.32 H&R Magnum

Also known as .32 H&R

A mild magnum for small-frame revolvers.

Caliber: 0.312″ · 7.925 mm
Introduced: 1984
Case: Rimmed
Parent: .32 S&W Long
Primary use: Self-Defense, Small Game
Status: Active

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VelocityBeing verified

EnergyBeing verified

Typical grains80 · 85 · 100 gr

Identity

Introduced: 1984
Type: Revolver
Origin: United States
Inventor: Harrington & Richardson / Federal
Manufacturer: Harrington & Richardson / Federal
Standard: SAAMI
Status: Active
Availability: Common

Build

Case capacity: 13 gr H₂O
Twist (typical): 1:16
Primer: Small Pistol
Case type: Rimmed

Pressure & range

Max pressure: 21,000 psi
Eff. range: 50 yd
Max range: 200 yd
Recoil: 4–6.5 ft·lb
Subsonic: Capable

Ballistics

Published velocity/energy data isn't available for .32 H&R Magnum. Parent case: .32 S&W Long.

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.

CIP TDCC · approximate

Measure	mm	in	✓
Bullet ⌀	7.92	0.312	~
Neck ⌀	8.56	0.337	✓
Shoulder ⌀	n/a
Shoulder angle	n/a
Base ⌀	8.56	0.337	✓
Rim ⌀	9.53	0.375	✓
Belt ⌀	n/a
Rim thickness	1.40	0.055	✓
Neck length	n/a
Case length	27.31	1.075	✓
Overall length	34.29	1.350	✓

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. .32 H&R Magnum is highlighted below.

Factory loads

Verification

Being verified

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

Suitable powders

5 reloading powders listed for .32 H&R Magnum, fastest to slowest. Cross-reference in the finder →

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.

Firearms chambered in .32 H&R Magnum

12 models in the database chamber .32 H&R Magnum. Browse all →

Taurus Model 327 .327 FM CompactTaurus 327 Federal Mag 6-shotTaurus Taurus 327 .327 Fed Mag 3-inchTaurus 327 Ultralite .327 FMTaurus Model 327 .327 Federal Mag 2-inchHenry Repeating Arms Big Boy Classic .327 Fed Mag 16.5-inchTaurus 327 .327 Federal MagTaurus 327 Federal Magnum 2-inchTaurus Taurus 327 .327 Federal Mag 2-inchTaurus 327 Federal Magnum 3-inchTaurus 327 .327 Fed Mag 2-inchRuger GP100 .327 Fed Mag

Lineage

Family TreeOpen .32 H&R Magnum in the interactive cartridge family tree

Connected reference

Loads36 factory loads for .32 H&R Magnum Reloading5 suitable powders — cross-reference FirearmsFirearms in .32 H&R Magnum

History

Developed jointly by Harrington & Richardson and Federal in 1984. Designed to give small revolvers better performance than .32 S&W Long without excessive recoil.

FAQs

What twist rate does .32 H&R Magnum use?: .32 H&R Magnum typically uses a 1:16 twist rate.
What bullet diameter is .32 H&R Magnum?: .32 H&R Magnum uses a 0.312″ (7.925 mm) diameter bullet.
Is .32 H&R Magnum still in production?: .32 H&R Magnum is active; typical availability is common.
What is .32 H&R Magnum used for?: .32 H&R Magnum is primarily used for self-defense, small game.
What is .32 H&R Magnum based on?: .32 H&R Magnum is derived from the .32 S&W Long case.
What are the best powders for .32 H&R Magnum?: Reloading powders commonly listed for .32 H&R Magnum include No. 2, Bull's-Eye, Universal, HP-38, among 5 suitable options.

Sources & provenance

Standard SAAMI — SAAMI cartridge & chamber drawing — .32 H&R Magnum archived
Standard C.I.P. — C.I.P. TDCC — Tables of Dimensions of Cartridges and Chambers
Standard SAAMI — ANSI/SAAMI Z299.3-2022 — Centerfire Pistol & Revolver Voluntary Performance Standards · grain_ballistics, representative_gun archived
Manufacturer Hornady — 32 H&R Mag 80gr FTX Critical Defense (Item #90060) · grain_ballistics, representative_gun archived
Manufacturer Federal — Personal Defense Hydra-Shok Deep 32 H&R Magnum, 85 Grain (SKU P32HRHSD1) · grain_ballistics, representative_gun
Manufacturer Federal — Personal Defense Revolver 32 H&R Magnum, 85 Grain JHP (SKU C32HRB) · grain_ballistics, representative_gun archived
Manufacturer Black Hills Ammunition — .32 H&R Magnum 85 Gr. Jacketed Hollow Point · grain_ballistics, representative_gun
Manufacturer Federal — Champion Training 32 H&R Magnum, 95 Grain Semi-Wadcutter (SKU C32HRA) · grain_ballistics, representative_gun archived
Manufacturer Buffalo Bore — HEAVY 32 H&R MAG. +P — 100 gr. JHP (Item 36A) · grain_ballistics, representative_gun archived

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 36 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →