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Revolver · SAAMI

.327 Federal Magnum

.327 Federal

A high-pressure .32-caliber magnum that fits 6 rounds where a .357 Magnum holds 5.

Caliber
0.312″ · 7.925 mm
Introduced
2008
Case
Rimmed
Parent
.32 H&R Magnum
Primary use
Self-Defense, Concealed Carry
Status
Active
Velocity1,200–1,500 fps
Energy270–450 ft·lb
Typical grains85 · 100 · 115 gr
Identity
Introduced
2008
Type
Revolver
Origin
United States
Inventor
Federal Premium / Ruger
Manufacturer
Federal Premium
Standard
SAAMI
Status
Active
Availability
Common
Build
Case capacity
17 gr H₂O
Twist (typical)
1:16
Primer
Small Pistol
Case type
Rimmed
Pressure & range
Max pressure
45,000 psi
Eff. range
75 yd
Max range
250 yd
Recoil
5–8 ft·lb
Subsonic
Capable

Ballistics

Real trajectory computed from a representative load — Federal Premium Handgun 100 gr, 1,500 fps, BC 0.231 G7 · 25 yd zero.

overlay up to 2
RangeVelocityEnergyDrop (in)Drop (MOA)
0 yd1500499-0.9″—
25 yd14634750.0″0.0
50 yd1426452-0.1″-0.2
75 yd1390429-1.3″-1.7
100 yd1355408-3.6″-3.4
125 yd1320387-7.1″-5.4
150 yd1285367-11.9″-7.6
175 yd1251348-17.9″-9.8
200 yd1218329-25.4″-12.1

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 HuntingFederal Premium Handgun100 gr · SST · 1,500 fps · BC 0.231 G7Buy now →
Best for DefenseFederal Premium Handgun100 gr · SST · 1,500 fps · BC 0.231 G7Buy now →
Best for TargetFederal Fusion100 gr · JSP · 1,500 fps · BC 0.150 G1Buy now →

Buy links open .327 Federal 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.

SAAMI · verified
Measuremmin✓
Bullet ⌀7.920.312✓
Neck ⌀8.560.337✓
Shoulder ⌀n/a
Shoulder anglen/a
Base ⌀8.560.337✓
Rim ⌀9.530.375✓
Belt ⌀n/a
Rim thickness1.400.055~
Neck lengthn/a
Case length30.481.200✓
Overall length37.341.470✓

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. .327 Federal Magnum is highlighted below.

Factory loads

In production — 248 active loads across 33 brands. Top 15 shown · see all 248 →.

BrandLoadGrainBulletFPSft·lbBC
FederalFusion100JSP1,5005000.150 G1
FederalPremium Handgun100SST1,5005000.231 G7
UnderwoodXtreme Defender75Lehigh XD1,800539—
Underwood AmmoXtreme Penetrator 75gr75Lehigh XP1,700481—
Black HillsHoney Badger60HB1,700385—
Lehigh DefenseXtreme Penetrator75XP1,650453—
Underwood AmmoXtreme Penetrator80XP1,600455—
Cor-BonDPX85Barnes XPB1,600483—
Underwood AmmoJHP100JHP1,550533—
UnderwoodXtreme Penetrator90Xtreme Penetrator1,550480—
Sig SauerV-Crown100JHP1,500500—
Cor-BonJHP 100gr +P100JHP1,500500—
FederalPersonal Defense Punch JHP85Punch JHP1,500425—
Sig SauerElite V-Crown100V-Crown JHP1,500500—
HornadyCustom XTP100XTP JHP1,500500—

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

Suitable powders

2 reloading powders listed for .327 Federal Magnum, fastest to slowest. Cross-reference in the finder →

HP-38HS-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.

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

Firearms chambered in .327 Federal Magnum

12 models in the database chamber .327 Federal Magnum. Browse all →

Taurus 327 Federal Mag 6-shotTaurus Model 327 Polymer .327 FederalTaurus 327 .327 Federal 3-InchTaurus Model 327 .327 Federal Mag 2-inchTaurus 327 Ultralite .327 FMTaurus 327 Federal Magnum 2-inchTaurus Model 327 .327 FederalTaurus 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-inch

Lineage

Immediate parent
.32 H&R Magnum
Family TreeOpen .327 Federal Magnum in the interactive cartridge family tree↗

Connected reference

Loads248 factory loads for .327 Federal Magnum↗Reloading2 suitable powders — cross-reference↗FirearmsFirearms in .327 Federal Magnum↗ToolCompare ballistics↗

History

Developed jointly by Federal and Ruger in 2008. The .32 caliber bore allows a 6-shot cylinder where .357 Magnum can only fit 5 in J-frame revolvers. Intended as a modern small-frame magnum with lower recoil than .357.

FAQs

What twist rate does .327 Federal Magnum use?
.327 Federal Magnum typically uses a 1:16 twist rate.
What bullet diameter is .327 Federal Magnum?
.327 Federal Magnum uses a 0.312″ (7.925 mm) diameter bullet.
Is .327 Federal Magnum still in production?
.327 Federal Magnum is active; typical availability is common.
What is .327 Federal Magnum used for?
.327 Federal Magnum is primarily used for self-defense, concealed carry.
What is .327 Federal Magnum based on?
.327 Federal Magnum is derived from the .32 H&R Magnum case.
What are the best powders for .327 Federal Magnum?
Reloading powders commonly listed for .327 Federal Magnum include HP-38, HS-6.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 248 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →