Load Specifications
Bullet Manufacturer:MRR
Bullet Weight:167 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.003"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:74 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:12.5
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 167gr | MRR Green Hunting bullet and 107 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 55,376 psi | 85% | 2736 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,334 psi | 88% | 2812 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 56,884 psi | 88% | 2802 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,782 psi | 86% | 2828 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,305 psi | 88% | 2812 fps | 97.1% |
| Accurate 4064 | <<locked>> | 94% | 56,898 psi | 88% | 2851 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,939 psi | 81% | 2874 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 82% | 57,957 psi | 89% | 2726 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 58,421 psi | 90% | 2756 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 58,146 psi | 89% | 2890 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 55,579 psi | 86% | 2835 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,217 psi | 88% | 2838 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 57,914 psi | 89% | 2812 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,608 psi | 86% | 2897 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 58,320 psi | 90% | 3015 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,448 psi | 85% | 2858 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 58,450 psi | 90% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,086 psi | 86% | 2881 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,503 psi | 79% | 2884 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,260 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,230 psi | 56% | 2605 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,408 psi | 62% | 2756 fps | 96.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,348 psi | 88% | 2726 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 58,392 psi | 90% | 2910 fps | 99.8% |
| Bofors RP3 | <<locked>> | 94% | 55,898 psi | 86% | 2874 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,318 psi | 87% | 2841 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,753 psi | 86% | 2776 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,449 psi | 87% | 2871 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 58,784 psi | 90% | 2972 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 58,102 psi | 89% | 2835 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,434 psi | 85% | 2812 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,217 psi | 88% | 2887 fps | 99.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,521 psi | 87% | 2933 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 98% | 57,522 psi | 88% | 2897 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 90% | 58,740 psi | 90% | 2900 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,572 psi | 73% | 2762 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 58,102 psi | 89% | 2933 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 57,914 psi | 89% | 2976 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,099 psi | 54% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,492 psi | 87% | 2851 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 58,610 psi | 90% | 2877 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 58,566 psi | 90% | 2867 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,347 psi | 85% | 2799 fps | 97.5% |
| IMR 4198 | <<locked>> | 84% | 58,726 psi | 90% | 2746 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,866 psi | 81% | 2808 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 98% | 58,537 psi | 90% | 2874 fps | 98% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,430 psi | 78% | 2818 fps | 99.1% |
| IMR 4895 | <<locked>> | 92% | 57,508 psi | 88% | 2910 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 57,217 psi | 88% | 2838 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,508 psi | 88% | 2828 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 57,696 psi | 89% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 58,001 psi | 89% | 2818 fps | 100% |
| Lovex S062 | <<locked>> | 94% | 58,305 psi | 90% | 2864 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,145 psi | 88% | 2861 fps | 98.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,650 psi | 84% | 2844 fps | 97.7% |
| Norma 201 | <<locked>> | 90% | 56,463 psi | 87% | 2828 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,203 psi | 88% | 2831 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,216 psi | 85% | 2864 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 52,446 psi | 81% | 2867 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 56,115 psi | 86% | 2897 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,474 psi | 79% | 2864 fps | 97.8% |
| Ramshot TAC | <<locked>> | 88% | 57,769 psi | 89% | 2864 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,290 psi | 88% | 2881 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 86% | 58,523 psi | 90% | 2848 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,505 psi | 55% | 1755 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,724 psi | 87% | 2822 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 57,595 psi | 89% | 2867 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,449 psi | 87% | 2946 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,912 psi | 86% | 2979 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,866 psi | 81% | 2900 fps | 99.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,069 psi | 82% | 2930 fps | 99% |
| Rottweil R 901 | <<locked>> | 88% | 57,363 psi | 88% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 56,942 psi | 88% | 2828 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,448 psi | 85% | 2858 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,318 psi | 87% | 2841 fps | 97.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,145 psi | 88% | 2861 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 57,696 psi | 89% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 58,305 psi | 90% | 2864 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,650 psi | 84% | 2844 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,376 psi | 87% | 2792 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 57,725 psi | 89% | 2927 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,144 psi | 86% | 2766 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,912 psi | 86% | 2838 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,478 psi | 87% | 2861 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 58,639 psi | 90% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 58,798 psi | 90% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 58,233 psi | 90% | 2822 fps | 97.9% |
| Somchem S321 | <<locked>> | 86% | 58,697 psi | 90% | 2874 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 57,537 psi | 89% | 2766 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,608 psi | 86% | 2831 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 55,927 psi | 86% | 2858 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,717 psi | 72% | 2815 fps | 100% |
| Vihtavuori N130 | <<locked>> | 86% | 58,421 psi | 90% | 2736 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 58,769 psi | 90% | 2756 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,637 psi | 87% | 2792 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 57,943 psi | 89% | 2812 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,725 psi | 89% | 2838 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,056 psi | 85% | 2864 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 88% | 57,943 psi | 89% | 2841 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,086 psi | 86% | 2812 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,983 psi | 83% | 2871 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,276 psi | 60% | 2687 fps | 97.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,086 psi | 86% | 2851 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 57,856 psi | 89% | 2890 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,521 psi | 87% | 2933 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,358 psi | 50% | 2585 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,463 psi | 87% | 2871 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 45,861 psi | 71% | 2602 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,038 psi | 77% | 2710 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,971 psi | 58% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,150 psi | 69% | 2667 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,096 psi | 77% | 2700 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 35,926 psi | 55% | 2503 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,563 psi | 53% | 2533 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 54,346 psi | 84% | 2680 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,766 psi | 84% | 2707 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,322 psi | 65% | 2628 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 35,998 psi | 55% | 2477 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,454 psi | 68% | 2641 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 44,251 psi | 68% | 2628 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,996 psi | 80% | 2841 fps | 99.9% |
| Alliant Power Pro 2000-MR | 50.6 gr | 80% | 38,348 psi | 59% | 2648 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,273 psi | 54% | 2497 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,793 psi | 80% | 2697 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,058 psi | 59% | 2559 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,404 psi | 54% | 2552 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 30,371 psi | 47% | 2451 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,995 psi | 49% | 2497 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,521 psi | 58% | 2690 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,708 psi | 83% | 2677 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,481 psi | 64% | 2628 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 34,635 psi | 53% | 2493 fps | 97.8% |
| Bofors RP7 | <<locked>> | 92% | 46,557 psi | 72% | 2680 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,137 psi | 71% | 2628 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,004 psi | 66% | 2657 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,645 psi | 73% | 2802 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 50,865 psi | 78% | 2733 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,706 psi | 80% | 2759 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,650 psi | 55% | 2497 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 46,050 psi | 71% | 2759 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 94% | 50,502 psi | 78% | 2785 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,714 psi | 66% | 2638 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,255 psi | 47% | 2395 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,580 psi | 59% | 2605 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 94% | 46,383 psi | 71% | 2782 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 40% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,002 psi | 63% | 2592 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 42,177 psi | 65% | 2638 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,753 psi | 58% | 2510 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,730 psi | 70% | 2638 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 52,272 psi | 80% | 2661 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 46,731 psi | 72% | 2707 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,687 psi | 70% | 2664 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 33,707 psi | 52% | 2497 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 39,001 psi | 60% | 2589 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 44,454 psi | 68% | 2641 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 49,922 psi | 77% | 2720 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,973 psi | 63% | 2605 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,641 psi | 66% | 2569 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 37,449 psi | 58% | 2513 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 39,436 psi | 61% | 2556 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 45,237 psi | 70% | 2687 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 41,147 psi | 63% | 2575 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 41,597 psi | 64% | 2592 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,420 psi | 58% | 2546 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 35,128 psi | 54% | 2539 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 36,956 psi | 57% | 2559 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 42,134 psi | 65% | 2694 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 44,324 psi | 68% | 2641 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,642 psi | 67% | 2657 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,080 psi | 74% | 2687 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,281 psi | 40% | 1568 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,850 psi | 77% | 2720 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,336 psi | 64% | 2592 fps | 95% |
| ReloadSwiss RS 52 | 49 gr | 80% | 39,682 psi | 61% | 2654 fps | 97.6% |
| ReloadSwiss RS 60 | 49.8 gr | 80% | 32,401 psi | 50% | 2520 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,144 psi | 57% | 2612 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,350 psi | 62% | 2684 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 45,005 psi | 69% | 2621 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,291 psi | 60% | 2533 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 32,619 psi | 50% | 2438 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 46,557 psi | 72% | 2680 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,436 psi | 61% | 2556 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,973 psi | 63% | 2605 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,449 psi | 58% | 2513 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 94% | 45,237 psi | 70% | 2687 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,823 psi | 81% | 2743 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,707 psi | 52% | 2487 fps | 96.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,808 psi | 81% | 2720 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,279 psi | 65% | 2608 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,785 psi | 63% | 2595 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,873 psi | 66% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,491 psi | 55% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,440 psi | 68% | 2605 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 47,921 psi | 74% | 2717 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,264 psi | 65% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,250 psi | 65% | 2612 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 33,489 psi | 52% | 2444 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 27,514 psi | 42% | 2375 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 48,559 psi | 75% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,236 psi | 67% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,609 psi | 59% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,479 psi | 61% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,952 psi | 49% | 2388 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 88% | 36,912 psi | 57% | 2543 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 44,425 psi | 68% | 2635 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,855 psi | 58% | 2513 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,332 psi | 56% | 2546 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 32,111 psi | 49% | 2520 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,429 psi | 47% | 2362 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 43,932 psi | 68% | 2677 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 43,308 psi | 67% | 2710 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,197 psi | 46% | 2516 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,059 psi | 62% | 2595 fps | 98.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 107 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 167gr | MRR Green Hunting. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,716 fps to 3,015 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 167.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 167gr | MRR Green Hunting they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.