
Load Specifications
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 200gr | Sako Hammerhead bullet and 108 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, 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>> | 82% | 57,566 psi | 89% | 2516 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,058 psi | 88% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 58,407 psi | 90% | 2612 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,042 psi | 85% | 2566 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,572 psi | 73% | 2546 fps | 98.9% |
| Accurate 4064 | <<locked>> | 88% | 57,276 psi | 88% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,421 psi | 88% | 2697 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,637 psi | 87% | 2625 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,638 psi | 89% | 2628 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,056 psi | 85% | 2687 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,419 psi | 85% | 2575 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,043 psi | 88% | 2543 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,884 psi | 88% | 2753 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,795 psi | 84% | 2684 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 58,131 psi | 89% | 2648 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 58,624 psi | 90% | 2671 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 58,204 psi | 90% | 2746 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,825 psi | 86% | 2726 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,969 psi | 83% | 2674 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,413 psi | 73% | 2618 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,831 psi | 69% | 2569 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,436 psi | 61% | 2490 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,778 psi | 78% | 2740 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,420 psi | 87% | 2644 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 55,492 psi | 85% | 2621 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,413 psi | 73% | 2618 fps | 96.9% |
| Bofors RP7 | <<locked>> | 94% | 58,726 psi | 90% | 2654 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,956 psi | 88% | 2556 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,114 psi | 85% | 2605 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,202 psi | 86% | 2638 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 56,246 psi | 87% | 2700 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 56,391 psi | 87% | 2661 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 84% | 57,246 psi | 88% | 2635 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 58,189 psi | 90% | 2671 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,217 psi | 88% | 2671 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,318 psi | 87% | 2736 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,143 psi | 56% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 58,262 psi | 90% | 2631 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,769 psi | 89% | 2608 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,377 psi | 88% | 2615 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,695 psi | 87% | 2602 fps | 99.3% |
| IMR 4350 | <<locked>> | 96% | 55,651 psi | 86% | 2635 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,681 psi | 87% | 2628 fps | 99.3% |
| IMR 4831 | <<locked>> | 98% | 57,667 psi | 89% | 2687 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 56,521 psi | 87% | 2651 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,723 psi | 84% | 2621 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 82% | 55,419 psi | 85% | 2575 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,768 psi | 87% | 2598 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,637 psi | 86% | 2552 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,363 psi | 88% | 2608 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,652 psi | 87% | 2628 fps | 99.8% |
| Lovex S070 | <<locked>> | 96% | 57,769 psi | 89% | 2664 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,494 psi | 61% | 2408 fps | 97.4% |
| Norma 201 | <<locked>> | 84% | 55,390 psi | 85% | 2572 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,072 psi | 86% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,870 psi | 89% | 2661 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,420 psi | 87% | 2684 fps | 98.1% |
| Norma MRPᴾ | <<locked>> | 100% | 50,183 psi | 77% | 2697 fps | 98.7% |
| Norma URP | <<locked>> | 96% | 56,188 psi | 86% | 2684 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 58,566 psi | 90% | 2684 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 58,450 psi | 90% | 2736 fps | 99.9% |
| Ramshot TAC | <<locked>> | 82% | 55,622 psi | 86% | 2605 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,521 psi | 85% | 2615 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 57% | 1624 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,028 psi | 86% | 2621 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,767 psi | 86% | 2687 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,332 psi | 85% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,942 psi | 88% | 2720 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,782 psi | 86% | 2746 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 56,478 psi | 87% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,101 psi | 86% | 2575 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,347 psi | 85% | 2615 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,637 psi | 87% | 2654 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,910 psi | 81% | 2657 fps | 98% |
| Rottweil R 907 | <<locked>> | 94% | 58,726 psi | 90% | 2654 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,652 psi | 87% | 2628 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,768 psi | 87% | 2598 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,363 psi | 88% | 2608 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,769 psi | 89% | 2664 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,101 psi | 88% | 2674 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 58,073 psi | 89% | 2635 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 58,668 psi | 90% | 2651 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,623 psi | 87% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,174 psi | 88% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,521 psi | 87% | 2582 fps | 99.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,431 psi | 81% | 2654 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 55,985 psi | 86% | 2507 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,493 psi | 88% | 2618 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,419 psi | 85% | 2612 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 58,784 psi | 90% | 2654 fps | 96.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 58,581 psi | 90% | 2730 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,592 psi | 82% | 2638 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 84% | 57,029 psi | 88% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,130 psi | 86% | 2533 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,405 psi | 87% | 2549 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,869 psi | 87% | 2589 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 58,537 psi | 90% | 2677 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,325 psi | 71% | 2513 fps | 97% |
| Vihtavuori N530 | <<locked>> | 82% | 55,767 psi | 86% | 2572 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 58,363 psi | 90% | 2595 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,334 psi | 88% | 2684 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,922 psi | 77% | 2638 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 58,479 psi | 90% | 2651 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,318 psi | 87% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,246 psi | 87% | 2700 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,161 psi | 62% | 2608 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 58,798 psi | 90% | 2657 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,444 psi | 78% | 2582 fps | 97.2% |
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% | 54,027 psi | 83% | 2474 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,152 psi | 73% | 2421 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 54,491 psi | 84% | 2562 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,411 psi | 70% | 2418 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 33,895 psi | 52% | 2297 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 44,628 psi | 69% | 2425 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,286 psi | 51% | 2293 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 80% | 49,995 psi | 77% | 2533 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,540 psi | 65% | 2398 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 42,540 psi | 65% | 2477 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,083 psi | 80% | 2530 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,664 psi | 83% | 2503 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,035 psi | 71% | 2585 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 42,453 psi | 65% | 2477 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,583 psi | 66% | 2421 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,585 psi | 70% | 2480 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,185 psi | 51% | 2303 fps | 97.4% |
| Alliant Reloder-17 | 50.3 gr | 80% | 37,173 psi | 57% | 2418 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 41,945 psi | 65% | 2470 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 41,698 psi | 64% | 2513 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,585 psi | 39% | 2126 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 94% | 32,721 psi | 50% | 2333 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,053 psi | 48% | 2336 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,603 psi | 76% | 2549 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 42,554 psi | 65% | 2428 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 41,698 psi | 64% | 2513 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 37,956 psi | 58% | 2310 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,563 psi | 82% | 2510 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,459 psi | 79% | 2556 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,308 psi | 67% | 2441 fps | 99% |
| Hodgdon H414 | <<locked>> | 80% | 35,462 psi | 55% | 2336 fps | 95% |
| Hodgdon H4350 | <<locked>> | 82% | 40,959 psi | 63% | 2405 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 50,502 psi | 78% | 2539 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,705 psi | 47% | 2211 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,746 psi | 72% | 2523 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 39,624 psi | 61% | 2451 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 41% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,501 psi | 75% | 2497 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,908 psi | 78% | 2523 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,730 psi | 69% | 2428 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,094 psi | 72% | 2454 fps | 98% |
| IMR 4350 | <<locked>> | 84% | 38,276 psi | 59% | 2343 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,305 psi | 60% | 2339 fps | 96% |
| IMR 4831 | <<locked>> | 80% | 32,242 psi | 50% | 2254 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 46,717 psi | 72% | 2507 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 51,401 psi | 79% | 2572 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 52,083 psi | 80% | 2530 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,951 psi | 77% | 2510 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,414 psi | 76% | 2464 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,817 psi | 69% | 2428 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,999 psi | 57% | 2297 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 35,172 psi | 54% | 2277 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 32,605 psi | 50% | 2267 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 49,066 psi | 75% | 2484 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,400 psi | 76% | 2480 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,991 psi | 69% | 2470 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 43,004 psi | 66% | 2470 fps | 95.3% |
| Norma MRP | <<locked>> | 92% | 38,363 psi | 59% | 2474 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 33,460 psi | 51% | 2290 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 80% | 44,802 psi | 69% | 2490 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 34,650 psi | 53% | 2326 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 52,083 psi | 80% | 2552 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,909 psi | 80% | 2569 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 42% | 1450 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,265 psi | 67% | 2421 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,892 psi | 75% | 2589 fps | 100% |
| ReloadSwiss RS 60 | 50.3 gr | 80% | 39,537 psi | 61% | 2470 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,909 psi | 51% | 2306 fps | 96.7% |
| ReloadSwiss RS 70 | 51 gr | 80% | 32,474 psi | 50% | 2306 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 53,084 psi | 82% | 2507 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,702 psi | 72% | 2441 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,190 psi | 62% | 2382 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 46,978 psi | 72% | 2507 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 92% | 40,799 psi | 63% | 2454 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 37,956 psi | 58% | 2310 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,999 psi | 57% | 2297 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,951 psi | 77% | 2510 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,817 psi | 69% | 2428 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 35,172 psi | 54% | 2277 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,176 psi | 63% | 2431 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,662 psi | 78% | 2533 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,515 psi | 75% | 2507 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,009 psi | 77% | 2421 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,032 psi | 65% | 2306 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,056 psi | 55% | 2244 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 43,163 psi | 66% | 2500 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 49,777 psi | 77% | 2425 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,459 psi | 78% | 2526 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,799 psi | 63% | 2385 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 51,372 psi | 79% | 2549 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 30,095 psi | 46% | 2254 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 38,841 psi | 60% | 2388 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 50,459 psi | 78% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,601 psi | 72% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,934 psi | 72% | 2421 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,812 psi | 60% | 2323 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,780 psi | 54% | 2290 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 96% | 40,654 psi | 63% | 2415 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 52,301 psi | 80% | 2526 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,310 psi | 70% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,360 psi | 53% | 2297 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 27,644 psi | 43% | 2195 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,243 psi | 53% | 2270 fps | 99.1% |
| Winchester 748 | <<locked>> | 80% | 52,808 psi | 81% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 35,462 psi | 55% | 2336 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,643 psi | 39% | 2205 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,211 psi | 74% | 2513 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 43,816 psi | 67% | 2474 fps | 95.6% |
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 108 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 200gr | Sako Hammerhead. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,753 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,753 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 200gr | Sako Hammerhead 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.