Load Specifications
Bullet Manufacturer:Swift
Bullet Weight:180 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:1:11.0
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 180gr | Swift Scirocco bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Alliant Reloder-17 and ReloadSwiss RS 60.
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% | 57,885 psi | 89% | 2644 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,347 psi | 87% | 2677 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,478 psi | 87% | 2671 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 58,494 psi | 90% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,854 psi | 86% | 2677 fps | 97.4% |
| Accurate 4064 | <<locked>> | 92% | 56,246 psi | 87% | 2717 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,941 psi | 86% | 2802 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 88% | 56,985 psi | 88% | 2753 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 57,725 psi | 89% | 2746 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,840 psi | 86% | 2700 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,710 psi | 87% | 2674 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 58,131 psi | 89% | 2808 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,652 psi | 87% | 2871 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,711 psi | 89% | 2769 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,377 psi | 88% | 2648 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 58,595 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,925 psi | 83% | 2808 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 58,740 psi | 90% | 2894 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,406 psi | 59% | 2552 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,641 psi | 66% | 2703 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,739 psi | 87% | 2769 fps | 99.9% |
| Bofors RP3 | <<locked>> | 94% | 58,653 psi | 90% | 2789 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 58,755 psi | 90% | 2762 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,740 psi | 89% | 2684 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,158 psi | 85% | 2733 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,290 psi | 88% | 2828 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,637 psi | 87% | 2690 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,812 psi | 89% | 2720 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,941 psi | 86% | 2753 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 98% | 55,434 psi | 85% | 2802 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 96% | 56,304 psi | 87% | 2766 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 88% | 57,566 psi | 89% | 2762 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,038 psi | 77% | 2687 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,840 psi | 87% | 2792 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,231 psi | 87% | 2838 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 55% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,187 psi | 85% | 2713 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,522 psi | 88% | 2740 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,319 psi | 88% | 2733 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,377 psi | 88% | 2717 fps | 98.3% |
| IMR 4198 | <<locked>> | 82% | 57,290 psi | 88% | 2602 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,100 psi | 85% | 2733 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,014 psi | 88% | 2740 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,026 psi | 82% | 2743 fps | 99.6% |
| IMR 4895 | <<locked>> | 90% | 56,260 psi | 87% | 2772 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,840 psi | 86% | 2700 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,318 psi | 87% | 2690 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,710 psi | 87% | 2726 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,391 psi | 87% | 2677 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 57,000 psi | 88% | 2726 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,333 psi | 87% | 2733 fps | 99.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,072 psi | 88% | 2766 fps | 98.5% |
| Norma 201 | <<locked>> | 88% | 55,709 psi | 86% | 2697 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,275 psi | 87% | 2697 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,740 psi | 89% | 2782 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 55,898 psi | 86% | 2782 fps | 96.4% |
| Norma URPᴾ | <<locked>> | 100% | 54,911 psi | 84% | 2789 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 92% | 58,465 psi | 90% | 2808 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,780 psi | 83% | 2785 fps | 98.7% |
| Ramshot TAC | <<locked>> | 86% | 56,318 psi | 87% | 2726 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,825 psi | 86% | 2740 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,797 psi | 87% | 2703 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,868 psi | 55% | 1677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,506 psi | 85% | 2684 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,347 psi | 87% | 2736 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,317 psi | 85% | 2805 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 58,465 psi | 90% | 2890 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,738 psi | 86% | 2825 fps | 99.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,550 psi | 85% | 2854 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 86% | 56,695 psi | 87% | 2677 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,173 psi | 86% | 2697 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 58,494 psi | 90% | 2779 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 58,755 psi | 90% | 2762 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,333 psi | 87% | 2733 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,710 psi | 87% | 2726 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 57,000 psi | 88% | 2726 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,072 psi | 88% | 2766 fps | 98.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 58,682 psi | 90% | 2703 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,623 psi | 87% | 2792 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 58,363 psi | 90% | 2667 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 58,334 psi | 90% | 2753 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,245 psi | 85% | 2723 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,421 psi | 88% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,406 psi | 88% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,753 psi | 87% | 2687 fps | 98.2% |
| Somchem S321 | <<locked>> | 84% | 57,421 psi | 88% | 2736 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,550 psi | 87% | 2635 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,914 psi | 89% | 2743 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 58,682 psi | 90% | 2776 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,269 psi | 76% | 2740 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 57,029 psi | 88% | 2598 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,638 psi | 89% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,709 psi | 86% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,797 psi | 87% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,710 psi | 87% | 2707 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,580 psi | 89% | 2782 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 86% | 56,565 psi | 87% | 2703 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 58,320 psi | 90% | 2720 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,681 psi | 87% | 2792 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,829 psi | 64% | 2625 fps | 98.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 58,305 psi | 90% | 2766 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,246 psi | 87% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,434 psi | 85% | 2802 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,287 psi | 53% | 2552 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 55,129 psi | 85% | 2730 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% | 48,124 psi | 74% | 2516 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,736 psi | 81% | 2628 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,828 psi | 63% | 2448 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,776 psi | 74% | 2592 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,934 psi | 71% | 2520 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 38,595 psi | 59% | 2444 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,285 psi | 50% | 2375 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 44,309 psi | 68% | 2552 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 37,797 psi | 58% | 2411 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,369 psi | 71% | 2559 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 46,644 psi | 72% | 2543 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 54,288 psi | 84% | 2753 fps | 100% |
| Alliant Power Pro 2000-MR | 48.7 gr | 80% | 40,263 psi | 62% | 2582 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,391 psi | 58% | 2434 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,954 psi | 83% | 2602 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,059 psi | 62% | 2490 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,822 psi | 50% | 2388 fps | 95.3% |
| Alliant Reloder-17 | 48 gr | 80% | 32,271 psi | 50% | 2405 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,066 psi | 46% | 2346 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,621 psi | 53% | 2516 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,497 psi | 67% | 2556 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 36,927 psi | 57% | 2434 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 45,818 psi | 70% | 2559 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,095 psi | 74% | 2546 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,194 psi | 70% | 2582 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,763 psi | 77% | 2717 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 80% | 53,214 psi | 82% | 2648 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,882 psi | 83% | 2671 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,782 psi | 58% | 2438 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 90% | 42,554 psi | 65% | 2585 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 92% | 49,385 psi | 76% | 2657 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 44,701 psi | 69% | 2562 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,253 psi | 43% | 2241 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,828 psi | 63% | 2539 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 92% | 45,411 psi | 70% | 2657 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,411 psi | 41% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,018 psi | 66% | 2520 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 44,512 psi | 68% | 2559 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,682 psi | 61% | 2444 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,177 psi | 65% | 2464 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 54,099 psi | 83% | 2562 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 45,788 psi | 70% | 2582 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,192 psi | 65% | 2493 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 33,533 psi | 52% | 2388 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 41,002 psi | 63% | 2520 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 46,369 psi | 71% | 2559 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 52,402 psi | 81% | 2638 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,453 psi | 67% | 2533 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,512 psi | 68% | 2493 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 39,610 psi | 61% | 2448 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 36,840 psi | 57% | 2395 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 42,018 psi | 65% | 2520 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 43,439 psi | 67% | 2507 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 43,830 psi | 67% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,450 psi | 61% | 2480 fps | 98.5% |
| Norma 204 | <<locked>> | 98% | 52,199 psi | 80% | 2726 fps | 95.7% |
| Norma URP | <<locked>> | 84% | 32,851 psi | 51% | 2379 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 38,928 psi | 60% | 2493 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 38,928 psi | 60% | 2520 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 46,311 psi | 71% | 2566 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,672 psi | 70% | 2585 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,038 psi | 77% | 2605 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 41% | 1499 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,924 psi | 80% | 2635 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,683 psi | 63% | 2470 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,047 psi | 65% | 2589 fps | 98.6% |
| ReloadSwiss RS 60 | 48 gr | 80% | 34,345 psi | 53% | 2467 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,374 psi | 53% | 2444 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,086 psi | 57% | 2510 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 47,369 psi | 73% | 2543 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,437 psi | 64% | 2464 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 34,751 psi | 53% | 2382 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 45,818 psi | 70% | 2559 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,840 psi | 57% | 2395 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,453 psi | 67% | 2533 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,610 psi | 61% | 2448 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 42,018 psi | 65% | 2520 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 54,911 psi | 84% | 2654 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,650 psi | 55% | 2431 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 54,839 psi | 84% | 2625 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,469 psi | 68% | 2539 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,830 psi | 66% | 2523 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,759 psi | 69% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,217 psi | 57% | 2336 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,642 psi | 67% | 2487 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 50,169 psi | 77% | 2635 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,396 psi | 68% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,295 psi | 68% | 2539 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 35,607 psi | 55% | 2388 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 25,904 psi | 40% | 2228 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 50,502 psi | 78% | 2513 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,092 psi | 69% | 2451 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,799 psi | 63% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,408 psi | 64% | 2454 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,823 psi | 52% | 2329 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 34,272 psi | 53% | 2382 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 46,470 psi | 71% | 2556 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,856 psi | 61% | 2444 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,620 psi | 52% | 2382 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 30,211 psi | 46% | 2369 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,052 psi | 46% | 2257 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 46,238 psi | 71% | 2602 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,554 psi | 65% | 2585 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,427 psi | 44% | 2365 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,264 psi | 65% | 2526 fps | 99.4% |
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 122 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 180gr | Swift Scirocco. Alliant Reloder-17 delivers the highest muzzle velocity at 2,894 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,894 fps. Accurate 3100 gives the best case fill at 100 %, and 122 of the 122 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 180gr | Swift Scirocco they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.