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.

Revolver · SAAMI

.32 H&R Magnum

.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

Velocity1,000–1,200 fps

Energy190–300 ft·lb

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

Real trajectory computed from a representative load — Federal Personal Defense 85 gr, 1,100 fps, BC 0.142 G1 · 25 yd zero.

Compare tooverlay up to 2

Range	Velocity	Energy	Drop (in)	Drop (MOA)
0 yd	1100	228	-0.9″	—
25 yd	1050	208	0.0″	-0.2
50 yd	1008	192	-1.2″	-2.2
75 yd	972	178	-4.4″	-5.6
100 yd	941	167	-10.0″	-9.5
125 yd	913	157	-18.0″	-13.7
150 yd	888	149	-28.6″	-18.2
175 yd	864	141	-41.9″	-22.9
200 yd	842	134	-58.2″	-27.8

Point-mass G7/G1 drag model, standard atmosphere — within ~2% of reference solvers to 1000 yd; real barrels and conditions vary. Open in Ballistic Compare →

Performance

Best for HuntingBuffalo Bore Hard Cast FN130 gr · Hard Cast FN · 1,200 fpsBuy now →

Best for DefenseFederal Personal Defense85 gr · SJHP · 1,100 fps · BC 0.142 G1Buy now →

Best for TargetFederal Personal Defense85 gr · SJHP · 1,100 fps · BC 0.142 G1Buy now →

Buy links open .32 H&R Magnum ammunition at Rivertown Munitions.

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

In production — 157 active loads across 31 brands. Top 15 shown · see all 157 →.

Brand	Load	Grain	Bullet	FPS	ft·lb	BC
Federal	Personal Defense	85	SJHP	1,100	228	0.142 G1
Buffalo Bore	Hard Cast FN	130	Hard Cast FN	1,200	416	—
Buffalo Bore	Standard Pressure	100	JHP	1,200	320	—
Hornady	Critical Defense	80	FTX	1,150	235	—
Hornady	Custom	80	XTP HP	1,150	235	—
Hornady	Custom XTP JHP 80gr	80	XTP JHP	1,150	235	—
Hornady	Critical Defense FTX	80	FTX HP	1,150	235	—
DoubleTap	Defense	85	JHP	1,150	250	—
Hornady	XTP	80	XTP	1,150	235	—
Cor-Bon	DPX TTSX	80	TTSX BT	1,150	235	—
Cor-Bon	JHP 80gr +P	80	JHP	1,150	235	—
Federal	American Eagle LRN	85	LRN	1,100	228	—
Magtech	Magtech	85	JHP	1,100	228	—
Magtech	SJHP	85	SJHP	1,100	228	—
Remington	UMC JHP	85	JHP	1,100	228	—

Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.

Suitable powders

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

No. 2 Bull's-Eye Universal HP-38 HS-6

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 $/lbCharge (gr)Bullet $/eaPrimer $/eaBrass reusesBrass $/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 327 Federal Mag 6-shotTaurus Model 327 .327 Federal Mag 2-inchTaurus 327 Ultralite .327 FMTaurus 327 Federal Magnum 2-inchTaurus 327 .327 Federal MagHenry Repeating Arms Big Boy .327 Fed 20-inchTaurus Model 327Henry Repeating Arms Big Boy Classic .327 Fed Mag 20-inchRuger LCRx .327 Fed Mag 3-inchCharter Arms Professional II .32 H&R MagRuger GP100 .327 Fed Mag 4.2-inchTaurus 327 Federal Magnum

Lineage

Immediate parent

.32 S&W Long

Direct descendants (1)

.327 Federal Magnum .25 NAA

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

Connected reference

Loads157 factory loads for .32 H&R Magnum↗Reloading5 suitable powders — cross-reference↗FirearmsFirearms in .32 H&R Magnum↗ToolCompare ballistics↗

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

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 157 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →