Load Specifications
Bullet Manufacturer:Swift
Bullet Weight:165 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:1:11.5
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 165gr | Swift Scirocco 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% | 55,550 psi | 85% | 2746 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,725 psi | 89% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,537 psi | 89% | 2815 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,086 psi | 86% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,290 psi | 88% | 2812 fps | 96.8% |
| Accurate 4064 | <<locked>> | 94% | 57,217 psi | 88% | 2858 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,055 psi | 82% | 2884 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 82% | 57,812 psi | 89% | 2733 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 58,233 psi | 90% | 2759 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 58,262 psi | 90% | 2897 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 55,637 psi | 86% | 2841 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,246 psi | 88% | 2848 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 57,885 psi | 89% | 2822 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,593 psi | 86% | 2904 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 57,812 psi | 89% | 3012 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,347 psi | 85% | 2864 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,376 psi | 85% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,985 psi | 86% | 2884 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,401 psi | 79% | 2887 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,217 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,492 psi | 56% | 2615 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,509 psi | 62% | 2762 fps | 96.3% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,087 psi | 88% | 2730 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 58,218 psi | 90% | 2913 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 55,927 psi | 86% | 2877 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,304 psi | 87% | 2841 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,535 psi | 85% | 2779 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,391 psi | 87% | 2877 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,810 psi | 84% | 2923 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 58,088 psi | 89% | 2841 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,521 psi | 85% | 2822 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,188 psi | 88% | 2890 fps | 99.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,144 psi | 86% | 2933 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 98% | 57,334 psi | 88% | 2897 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 88% | 55,216 psi | 85% | 2854 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,529 psi | 73% | 2766 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 57,928 psi | 89% | 2936 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 57,711 psi | 89% | 2976 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 54% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,565 psi | 87% | 2858 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 58,610 psi | 90% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 58,639 psi | 90% | 2874 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,492 psi | 85% | 2805 fps | 97.3% |
| IMR 4198 | <<locked>> | 84% | 58,755 psi | 90% | 2753 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,866 psi | 81% | 2815 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 98% | 58,407 psi | 90% | 2877 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,183 psi | 77% | 2822 fps | 98.9% |
| IMR 4895 | <<locked>> | 92% | 57,392 psi | 88% | 2913 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 57,246 psi | 88% | 2848 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,566 psi | 89% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 58,001 psi | 89% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 57,740 psi | 89% | 2822 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 58,218 psi | 90% | 2871 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,174 psi | 88% | 2864 fps | 98.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,737 psi | 84% | 2848 fps | 97.5% |
| Norma 201 | <<locked>> | 90% | 56,826 psi | 87% | 2838 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,334 psi | 88% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 94% | 58,798 psi | 90% | 2923 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 52,388 psi | 81% | 2871 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 55,651 psi | 86% | 2897 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,242 psi | 79% | 2864 fps | 97.6% |
| Ramshot TAC | <<locked>> | 88% | 57,667 psi | 89% | 2864 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,159 psi | 88% | 2884 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 58,378 psi | 90% | 2851 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,549 psi | 55% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,797 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 57,537 psi | 89% | 2871 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,536 psi | 87% | 2953 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,796 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,605 psi | 81% | 2904 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,852 psi | 81% | 2927 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 88% | 57,769 psi | 89% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,261 psi | 88% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,782 psi | 86% | 2871 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,304 psi | 87% | 2841 fps | 96.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,174 psi | 88% | 2864 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 58,001 psi | 89% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 58,218 psi | 90% | 2871 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,737 psi | 84% | 2848 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,507 psi | 87% | 2799 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 57,566 psi | 89% | 2930 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,333 psi | 87% | 2776 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,927 psi | 86% | 2841 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,623 psi | 87% | 2867 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 58,682 psi | 90% | 2779 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 58,537 psi | 90% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 57,986 psi | 89% | 2822 fps | 97.7% |
| Somchem S321 | <<locked>> | 86% | 58,610 psi | 90% | 2881 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 57,783 psi | 89% | 2776 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,492 psi | 85% | 2835 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 56,217 psi | 86% | 2867 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,760 psi | 72% | 2822 fps | 100% |
| Vihtavuori N130 | <<locked>> | 86% | 58,392 psi | 90% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 58,726 psi | 90% | 2762 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,797 psi | 87% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 57,725 psi | 89% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,696 psi | 89% | 2844 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,940 psi | 85% | 2867 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 88% | 57,754 psi | 89% | 2848 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,014 psi | 86% | 2815 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 2874 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,508 psi | 61% | 2694 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,854 psi | 86% | 2854 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 57,682 psi | 89% | 2897 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,420 psi | 87% | 2936 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,619 psi | 50% | 2592 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,333 psi | 87% | 2874 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% | 46,340 psi | 71% | 2615 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,386 psi | 78% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,928 psi | 60% | 2533 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,484 psi | 70% | 2677 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,111 psi | 77% | 2703 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 36,782 psi | 57% | 2523 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,041 psi | 54% | 2546 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 54,505 psi | 84% | 2690 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,868 psi | 84% | 2713 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 42,525 psi | 65% | 2635 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 36,143 psi | 56% | 2484 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,599 psi | 69% | 2644 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 44,541 psi | 69% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,025 psi | 80% | 2848 fps | 99.9% |
| Alliant Power Pro 2000-MR | 50 gr | 80% | 38,566 psi | 59% | 2654 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,549 psi | 55% | 2503 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,837 psi | 80% | 2703 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,334 psi | 59% | 2569 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,505 psi | 55% | 2556 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 30,763 psi | 47% | 2461 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,474 psi | 50% | 2510 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,913 psi | 58% | 2697 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,708 psi | 83% | 2684 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,655 psi | 64% | 2635 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 35,085 psi | 54% | 2507 fps | 97.7% |
| Bofors RP7 | <<locked>> | 94% | 49,734 psi | 77% | 2740 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,456 psi | 71% | 2638 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,279 psi | 67% | 2667 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,427 psi | 73% | 2802 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 50,836 psi | 78% | 2740 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,793 psi | 80% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,522 psi | 59% | 2562 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 46,064 psi | 71% | 2766 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 96% | 53,795 psi | 83% | 2844 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 42,888 psi | 66% | 2648 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,618 psi | 47% | 2405 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,798 psi | 60% | 2615 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 96% | 49,951 psi | 77% | 2851 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,208 psi | 40% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,075 psi | 63% | 2595 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 42,264 psi | 65% | 2644 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,927 psi | 58% | 2516 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,905 psi | 71% | 2641 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 52,315 psi | 80% | 2667 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,545 psi | 76% | 2759 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,585 psi | 70% | 2667 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 36,245 psi | 56% | 2556 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 39,233 psi | 60% | 2598 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 44,599 psi | 69% | 2644 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 50,299 psi | 77% | 2730 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,336 psi | 64% | 2615 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,728 psi | 66% | 2575 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 37,768 psi | 58% | 2523 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 39,798 psi | 61% | 2562 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 45,339 psi | 70% | 2690 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 41,742 psi | 64% | 2592 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 41,814 psi | 64% | 2598 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,695 psi | 58% | 2556 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 35,462 psi | 55% | 2549 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 37,188 psi | 57% | 2566 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 42,221 psi | 65% | 2697 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 44,541 psi | 69% | 2648 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,787 psi | 67% | 2667 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,254 psi | 74% | 2694 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,484 psi | 41% | 1572 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,922 psi | 77% | 2726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,338 psi | 68% | 2654 fps | 95.6% |
| ReloadSwiss RS 52 | 48.4 gr | 80% | 39,842 psi | 61% | 2664 fps | 97.4% |
| ReloadSwiss RS 60 | 49.2 gr | 80% | 32,735 psi | 50% | 2530 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,347 psi | 57% | 2621 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,292 psi | 62% | 2684 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 45,484 psi | 70% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,653 psi | 61% | 2543 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 33,069 psi | 51% | 2451 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 49,734 psi | 77% | 2740 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,798 psi | 61% | 2562 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,336 psi | 64% | 2615 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,768 psi | 58% | 2523 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 45,339 psi | 70% | 2690 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,924 psi | 81% | 2749 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,997 psi | 52% | 2497 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,649 psi | 81% | 2723 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,612 psi | 66% | 2618 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,959 psi | 63% | 2602 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,047 psi | 66% | 2546 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,650 psi | 55% | 2415 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,659 psi | 73% | 2664 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 48,182 psi | 74% | 2726 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,757 psi | 66% | 2552 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,409 psi | 65% | 2618 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 34,040 psi | 52% | 2461 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 27,978 psi | 43% | 2388 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 48,631 psi | 75% | 2608 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,265 psi | 67% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,841 psi | 60% | 2526 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,682 psi | 61% | 2536 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,300 psi | 50% | 2398 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 37,231 psi | 57% | 2552 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 44,585 psi | 69% | 2641 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,116 psi | 59% | 2523 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,506 psi | 56% | 2552 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 34,679 psi | 53% | 2585 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,661 psi | 47% | 2369 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 44,048 psi | 68% | 2687 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 46,267 psi | 71% | 2769 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,618 psi | 47% | 2523 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,263 psi | 62% | 2605 fps | 98.5% |
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 | 165gr | Swift Scirocco. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,722 fps to 3,012 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 165.0 gr projectile in 0.308" calls for a 1:11.5 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 | 165gr | Swift Scirocco 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.