.300 Remington SA Ultra Mag
| .300 Remington Short Action Ultra Magnum | |||
|---|---|---|---|
| Type | Rifle | ||
| Place of origin | USA | ||
| Production history | |||
| Designer | Remington | ||
| Manufacturer | Remington | ||
| Produced | 2001 | ||
| Specifications | |||
| Parent case | .300 Remington Ultra Magnum | ||
| Bullet diameter | .308 in (7.8 mm) | ||
| Neck diameter | .344 in (8.7 mm) | ||
| Shoulder diameter | .534 in (13.6 mm) | ||
| Base diameter | .550 in (14.0 mm) | ||
| Rim diameter | .534 in (13.6 mm) | ||
| Case length | 2.015 in (51.2 mm) | ||
| Overall length | 2.825 in (71.8 mm) | ||
| Rifling twist | 1-10" | ||
| Primer type | Large rifle magnum | ||
| Ballistic performance | |||
| Bullet weight/type | Velocity | Energy | |
| 150 gr (10 g) SP | 3,253 ft/s (992 m/s) | 3,525 ft·lbf (4,779 J) | |
| 165 gr (11 g) SPBT | 3,126 ft/s (953 m/s) | 3,581 ft·lbf (4,855 J) | |
| 180 gr (12 g) HPBT | 2,954 ft/s (900 m/s) | 3,489 ft·lbf (4,730 J) | |
| 200 gr (13 g) SP | 2,790 ft/s (850 m/s) | 3,458 ft·lbf (4,688 J) | |
| Test barrel length: 24" Source(s): Reloading data at Accurate Powder |
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.300 Remington Short Action Ultra Magnum (also known as 300 RSAUM, 300 RSUM or 300 Rem SAUM) is a .30 caliber short magnum cartridge that was put on the market shortly after Winchester released its 300 WSM round in 2001.[1]
Performance
The 300 RSAUM's ballistics are similar to 300 Win Mag and 300 WSM. The difference in ballistics between the WSM and RSAUM are fairly minuscule.
Muzzle velocity
- 10.69 g (165 gr) Full Metal Jacket(FMJ): 3,075 ft/s
- 11.66 g (180 gr) Full Metal Jacket(FMJ): 2,960 ft/s
Comparisons
- The WSM has slightly more case capacity and thus, slightly more velocity
- The WSM is more popular and more ammo and handloading data are available
| Cartridge | Bullet Weight | Muzzle velocity | Muzzle energy |
|---|---|---|---|
| .30-06 Springfield | 200 | 2569 | 2932 |
| .300 RSAUM | 200 | 2790 | 3458 |
| .300 WSM | 200 | 2822 | 3538 |
| .300 Win Mag | 200 | 2877 | 3677 |
| .300 H&H Magnum | 200 | 2913 | 3769 |
| .300 Wby Mag | 200 | 2987 | 3963 |
| .300 RUM | 200 | 3154 | 4419 |
References
- ^ The .300 Remington Short Action Ultra Mag by Chuck Hawks
- ^ .308 Caliber reloading data at Accurate Powder
- ^ "Accurate Powder reload data table" (PDF). Archived from the original on 20 March 2009. Retrieved 2009-02-09.
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