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Lindcott Armory

Rifle · SAAMI

7mm SAUM

Also known as 7mm Remington Short Action Ultra Mag · 7mm RSAUM

Remington's short-action 7mm magnum.

Caliber
0.284″ · 7.214 mm
Introduced
2002
Case
Rebated
Parent
.300 Remington Ultra Magnum
Primary use
Hunting, Competition, Long Range
Status
Active

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VelocityBeing verified
EnergyBeing verified
Typical grains150 · 160 · 168 gr
Identity
Introduced
2002
Type
Rifle
Origin
United States
Inventor
Remington
Manufacturer
Remington Arms
Standard
SAAMI
Status
Active
Availability
Common
Build
Case capacity
86 gr H₂O
Twist (typical)
1:9
Primer
Large Rifle Magnum
Case type
Rebated
Pressure & range
Max pressure
65,000 psi
Eff. range
700 yd
Max range
1400 yd
Recoil
30–42 ft·lb

Introduced by Remington Arms

Ballistics

Published velocity/energy data isn't available for 7mm SAUM. Parent case: .300 Remington Ultra Magnum.

Performance

Best for Withheld until verified
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 · verified
Measuremmin✓
Bullet ⌀ 7.210.284 ✓
Neck ⌀ 8.130.320 ✓
Shoulder ⌀ 13.580.535 ✓
Shoulder angle 30°— ✓
Base ⌀ 14.000.551 ✓
Rim ⌀ 13.560.534 ✓
Belt ⌀ n/a
Rim thickness 1.270.050 ✓
Neck length 7.900.311 ≈
Case length 51.692.035 ✓
Overall length 71.762.825 ✓

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. 7mm SAUM is highlighted below.

Factory loads

Verification

Being verified

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

Suitable powders

6 reloading powders listed for 7mm SAUM, fastest to slowest. Cross-reference in the finder →

Reloader 19H4831IMR 4831AR 2213SCN565AR 2217
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.

Lineage

Immediate parent
.300 Remington Ultra Magnum
Family TreeOpen 7mm SAUM in the interactive cartridge family tree

Connected reference

Loads20 factory loads for 7mm SAUMReloading6 suitable powders — cross-referenceFirearmsFirearms in 7mm SAUM

History

Introduced by Remington in 2002 as part of their Short Action Ultra Mag family. Largely overlooked during the .30-caliber and 6.5mm precision rifle era. The 2022 PRS scene's enthusiasm for 7mm bullets (driven by the 7mm PRC launch) created renewed interest in the 7mm SAUM as a short-action alternative.

FAQs

What twist rate does 7mm SAUM use?
7mm SAUM typically uses a 1:9 twist rate.
What bullet diameter is 7mm SAUM?
7mm SAUM uses a 0.284″ (7.214 mm) diameter bullet.
Is 7mm SAUM still in production?
7mm SAUM is active; typical availability is common.
What is 7mm SAUM used for?
7mm SAUM is primarily used for hunting, competition, long range.
What is 7mm SAUM based on?
7mm SAUM is derived from the .300 Remington Ultra Magnum case.
What are the best powders for 7mm SAUM?
Reloading powders commonly listed for 7mm SAUM include Reloader 19, H4831, IMR 4831, AR 2213SC, among 6 suitable options.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 20 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →