Load Specifications
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 180gr | Woodleigh HS bullet and 100 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, Hodgdon Superformance and Alliant Reloder-17.
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>> | 84% | 57,043 psi | 88% | 2654 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,869 psi | 86% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 57,580 psi | 89% | 2743 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 58,320 psi | 90% | 2736 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,830 psi | 66% | 2592 fps | 97% |
| Accurate 4064 | <<locked>> | 90% | 55,898 psi | 86% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,869 psi | 86% | 2818 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 56,144 psi | 86% | 2759 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,898 psi | 88% | 2756 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 86% | 58,610 psi | 90% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,028 psi | 86% | 2680 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,753 psi | 86% | 2877 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 57,334 psi | 88% | 2782 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,885 psi | 89% | 2802 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,753 psi | 87% | 2871 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 58,305 psi | 90% | 2907 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 49,545 psi | 76% | 2730 fps | 95.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,770 psi | 63% | 2621 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,701 psi | 70% | 2785 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,854 psi | 86% | 2776 fps | 99.9% |
| Bofors RP3 | <<locked>> | 92% | 58,073 psi | 89% | 2799 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,783 psi | 89% | 2769 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,594 psi | 87% | 2690 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 58,059 psi | 89% | 2785 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,478 psi | 87% | 2838 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,100 psi | 85% | 2759 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 98% | 58,552 psi | 90% | 2867 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 55,506 psi | 85% | 2776 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 86% | 56,710 psi | 87% | 2769 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,011 psi | 82% | 2746 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,115 psi | 86% | 2799 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,259 psi | 85% | 2848 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,607 psi | 55% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,856 psi | 89% | 2769 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,695 psi | 87% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,623 psi | 87% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,449 psi | 87% | 2726 fps | 98.5% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,957 psi | 89% | 2795 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,217 psi | 86% | 2749 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,231 psi | 87% | 2808 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 55,724 psi | 86% | 2782 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 58,610 psi | 90% | 2756 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,840 psi | 86% | 2733 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 58,711 psi | 90% | 2730 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 56,420 psi | 87% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,593 psi | 86% | 2743 fps | 99.3% |
| Lovex S070 | <<locked>> | 98% | 56,507 psi | 87% | 2779 fps | 98.7% |
| Norma 201 | <<locked>> | 88% | 58,204 psi | 90% | 2749 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,303 psi | 85% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,043 psi | 88% | 2792 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,230 psi | 85% | 2795 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 45,571 psi | 70% | 2740 fps | 96.5% |
| Norma URPᴾ | <<locked>> | 100% | 58,218 psi | 90% | 2851 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 90% | 57,754 psi | 89% | 2818 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,913 psi | 88% | 2851 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 55,100 psi | 85% | 2730 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 58,624 psi | 90% | 2799 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,753 psi | 86% | 2710 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,143 psi | 56% | 1703 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,841 psi | 89% | 2733 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,332 psi | 85% | 2743 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 58,639 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,928 psi | 89% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,434 psi | 85% | 2841 fps | 99.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 58,726 psi | 90% | 2923 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 55,666 psi | 86% | 2680 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 58,639 psi | 90% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,653 psi | 89% | 2785 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,783 psi | 89% | 2769 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,593 psi | 86% | 2743 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,840 psi | 86% | 2733 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,420 psi | 87% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,507 psi | 87% | 2779 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,999 psi | 86% | 2802 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 57,363 psi | 88% | 2762 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,986 psi | 89% | 2782 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,043 psi | 86% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,579 psi | 87% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,898 psi | 86% | 2700 fps | 98.4% |
| Somchem S321 | <<locked>> | 82% | 56,188 psi | 86% | 2740 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,492 psi | 85% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,000 psi | 88% | 2749 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 57,841 psi | 89% | 2782 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,533 psi | 81% | 2802 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,849 psi | 75% | 2690 fps | 96.7% |
| Vihtavuori N130 | <<locked>> | 82% | 55,956 psi | 86% | 2602 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,333 psi | 87% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 58,581 psi | 90% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,912 psi | 86% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,753 psi | 86% | 2713 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,319 psi | 88% | 2799 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 55,434 psi | 85% | 2707 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,377 psi | 88% | 2723 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,014 psi | 86% | 2802 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,889 psi | 69% | 2694 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 57,290 psi | 88% | 2776 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,448 psi | 85% | 2753 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,897 psi | 84% | 2815 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,434 psi | 56% | 2631 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,914 psi | 89% | 2789 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% | 50,444 psi | 78% | 2566 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,091 psi | 66% | 2500 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,401 psi | 78% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,020 psi | 69% | 2526 fps | 95.5% |
| Accurate 3100 | <<locked>> | 96% | 37,362 psi | 57% | 2487 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,785 psi | 63% | 2497 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,242 psi | 50% | 2385 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 46,543 psi | 72% | 2608 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,392 psi | 61% | 2464 fps | 98.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,602 psi | 75% | 2612 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,240 psi | 76% | 2592 fps | 100% |
| Alliant Power Pro 2000-MR | 51.2 gr | 80% | 42,366 psi | 65% | 2644 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,334 psi | 61% | 2487 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,221 psi | 65% | 2549 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,532 psi | 50% | 2398 fps | 95.6% |
| Alliant Reloder-17 | 50.4 gr | 80% | 33,924 psi | 52% | 2464 fps | 97.9% |
| Alliant Reloder-19 | <<locked>> | 98% | 46,528 psi | 72% | 2674 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,166 psi | 43% | 2310 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 34,461 psi | 53% | 2533 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,687 psi | 70% | 2615 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 39,073 psi | 60% | 2493 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 42,409 psi | 65% | 2516 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,067 psi | 77% | 2595 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,587 psi | 73% | 2638 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,663 psi | 81% | 2779 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 39,740 psi | 61% | 2497 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 42,018 psi | 65% | 2592 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 45,759 psi | 70% | 2615 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 47,021 psi | 72% | 2618 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,021 psi | 43% | 2251 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,975 psi | 66% | 2595 fps | 99.8% |
| Hodgdon Superformance | 59.9 gr | 90% | 44,643 psi | 69% | 2667 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 41% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,933 psi | 69% | 2572 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 46,731 psi | 72% | 2605 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,379 psi | 64% | 2493 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,845 psi | 67% | 2516 fps | 96.1% |
| IMR 4350 | <<locked>> | 90% | 42,656 psi | 66% | 2543 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,510 psi | 64% | 2500 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 31,198 psi | 48% | 2343 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 43,236 psi | 67% | 2579 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 48,602 psi | 75% | 2612 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,774 psi | 70% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,166 psi | 71% | 2539 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 41,350 psi | 64% | 2497 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 36,303 psi | 56% | 2398 fps | 95.3% |
| Lovex S070 | <<locked>> | 88% | 41,510 psi | 64% | 2526 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 45,455 psi | 70% | 2559 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,934 psi | 71% | 2566 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,611 psi | 64% | 2539 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 48,240 psi | 74% | 2684 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 42,511 psi | 65% | 2677 fps | 95.6% |
| Norma URP | <<locked>> | 82% | 32,489 psi | 50% | 2385 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 41,133 psi | 63% | 2552 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 38,580 psi | 59% | 2530 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 48,356 psi | 74% | 2621 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,921 psi | 74% | 2638 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,257 psi | 80% | 2661 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 42% | 1522 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 54,302 psi | 84% | 2684 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,147 psi | 62% | 2480 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,527 psi | 69% | 2651 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,071 psi | 55% | 2526 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,214 psi | 53% | 2454 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 36,434 psi | 56% | 2513 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 49,414 psi | 76% | 2592 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,250 psi | 67% | 2513 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 36,680 psi | 56% | 2438 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 42,409 psi | 65% | 2516 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,303 psi | 56% | 2398 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,774 psi | 70% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,350 psi | 64% | 2497 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 41,510 psi | 64% | 2526 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,579 psi | 58% | 2487 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,920 psi | 72% | 2602 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,846 psi | 69% | 2579 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,615 psi | 72% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,943 psi | 60% | 2382 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,509 psi | 62% | 2448 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 52,504 psi | 81% | 2687 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,369 psi | 71% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,514 psi | 72% | 2595 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 37,449 psi | 58% | 2444 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 27,325 psi | 42% | 2287 fps | 96.8% |
| Somchem S385 | <<locked>> | 96% | 42,888 psi | 66% | 2585 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 52,518 psi | 81% | 2556 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,007 psi | 72% | 2497 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,873 psi | 66% | 2490 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,381 psi | 67% | 2500 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,592 psi | 55% | 2382 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 31,865 psi | 49% | 2339 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 48,718 psi | 75% | 2608 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,858 psi | 64% | 2493 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,373 psi | 51% | 2388 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 30,255 psi | 47% | 2382 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,502 psi | 48% | 2313 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 48,530 psi | 75% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 39,610 psi | 61% | 2546 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,282 psi | 44% | 2385 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,556 psi | 69% | 2585 fps | 99.7% |
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 120 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 180gr | Woodleigh HS. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,923 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,923 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 180gr | Woodleigh HS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Bofors RP15 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.