Rifle · SAAMI standardized

.300 Remington Short Action Ultra Magnum

.300 SAUM.300 RSAUM.300 Remington SAUM.300 Remington Short Action Ultra Mag

Remington's short-action ultra magnum cartridge, designed to match .300 Win Mag performance in a shorter action.

Identity
Introduced
2002
Type
Rifle
Origin
United States
Inventor
Remington
Manufacturer
Remington
Standard
SAAMI standardized
Status
Discontinued
Availability
Collector
Dimensions
Bullet ⌀
0.308″
Case length
2.015″
Overall length
2.825″
Base ⌀
0.55″
Case capacity
78 gr H₂O
Twist
1:10
Primer
Boxer Large Rifle
Case type
Belted
Performance
Max pressure
65,000 psi
Eff. range
400 yd
Recoil
25–35 ft·lb

Ballistics

Representative trajectory · 100 yd zero0–1000 yd
100 yd · zero0″−153″153″ drop @ 1000 yd05001000Open in Ballistic Compare ↗
Velocity
2,900–3,200 fps
Energy
2,801–3,721 ft·lb
By real loads
2,950–3,300 fps · 20 loads
Typical MSRP
$0.85/rd · price history →
Parent case

Representative trajectory — modeled from a single velocity input, not a measured load. Real published loads span the "by real loads" range above.

Factory loads

In production — 20 active loads across 15 brands. Top 15 shown · see all 20 →.

BrandLoadGrainBulletFPSft·lbBC$/rd
BarnesVOR-TX165TTSX BT3,2003,7510.422$0.85
HornadyPrecision Hunter180ELD-X3,0503,7170.554$3.50
BarnesTTSX150Tipped Triple-Shock3,3003,626$0.85
RemingtonCore-Lokt Ultra Bonded165PSP Bonded3,2003,751$0.85
NoslerTrophy Grade AccuBond165AccuBond3,2003,751$0.85
PPUPPU Standard150SP3,2003,410$0.55
DoubleTapDT Hunter150JHP3,2003,410$0.85
DoubletapLead-Free165Solid Copper HP3,1253,577
FederalPremium165Trophy Bonded3,1253,577$0.85
NoslerTrophy Grade165AccuBond3,1253,577$0.85
SierraGameKing165Soft Point BT3,1003,520$2.40
FederalFusion180Fusion SP3,0503,717$0.85
HSMTrophy Gold180Berger Hybrid3,0503,717$2.20
Black HillsGold175Hollow Point BT3,0003,497$0.85
DoubleTapAmmunition165Barnes TSX2,9603,209

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

Dimensions

.300 Remington Short Action Ultra Magnum cartridge dimensions diagram

Reloading cost

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 .300 Remington Short Action Ultra Magnum

1 model in the database chamber .300 Remington Short Action Ultra Magnum. Browse all →

Remington Model 673 Guide Rifle

Connected reference

History

Introduced by Remington in 2002 as a short-action alternative to the .300 Winchester Magnum. Used a rebated rim on a fat, short case. Failed commercially due to feeding issues, limited rifle availability, and the simultaneous success of .300 WSM. Officially discontinued around 2012.

FAQs

What twist rate does .300 Remington Short Action Ultra Magnum use?
.300 Remington Short Action Ultra Magnum typically uses a 1:10 twist rate.
What bullet diameter is .300 Remington Short Action Ultra Magnum?
.300 Remington Short Action Ultra Magnum uses a 0.308″ (7.82 mm) diameter bullet.
Is .300 Remington Short Action Ultra Magnum still in production?
.300 Remington Short Action Ultra Magnum is discontinued; typical availability is collector.
What is .300 Remington Short Action Ultra Magnum used for?
.300 Remington Short Action Ultra Magnum is primarily used for hunting.

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