Load Specifications
Bullet Manufacturer:SAKO
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:1:14.0
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 180gr | Sako SuperHammerhead bullet and 104 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 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>> | 84% | 57,595 psi | 89% | 2664 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,652 psi | 87% | 2694 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 58,334 psi | 90% | 2759 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,434 psi | 85% | 2700 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,395 psi | 67% | 2608 fps | 97.2% |
| Accurate 4064 | <<locked>> | 90% | 56,724 psi | 87% | 2740 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,565 psi | 87% | 2831 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 56,579 psi | 87% | 2772 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 57,580 psi | 89% | 2769 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,155 psi | 79% | 2756 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,521 psi | 85% | 2720 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,652 psi | 87% | 2690 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,434 psi | 87% | 2894 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 50,792 psi | 78% | 2753 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 58,030 psi | 89% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 58,595 psi | 90% | 2818 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,638 psi | 89% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,259 psi | 85% | 2867 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,053 psi | 77% | 2743 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,278 psi | 64% | 2635 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,412 psi | 71% | 2802 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,478 psi | 87% | 2789 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 55,201 psi | 85% | 2762 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 58,407 psi | 90% | 2785 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,087 psi | 88% | 2700 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 58,740 psi | 90% | 2802 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,261 psi | 88% | 2851 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,072 psi | 86% | 2779 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 96% | 55,521 psi | 85% | 2828 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 94% | 56,130 psi | 86% | 2792 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 86% | 57,188 psi | 88% | 2779 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,998 psi | 83% | 2762 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,855 psi | 87% | 2815 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,275 psi | 87% | 2871 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,752 psi | 55% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 58,523 psi | 90% | 2782 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,638 psi | 89% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,305 psi | 88% | 2756 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,087 psi | 88% | 2740 fps | 98.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 58,813 psi | 90% | 2812 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,782 psi | 87% | 2766 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,826 psi | 87% | 2818 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 56,231 psi | 87% | 2792 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,521 psi | 85% | 2720 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,623 psi | 87% | 2746 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,970 psi | 86% | 2697 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,188 psi | 88% | 2753 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,188 psi | 86% | 2756 fps | 99.4% |
| Lovex S070 | <<locked>> | 98% | 57,406 psi | 88% | 2795 fps | 98.9% |
| Norma 201 | <<locked>> | 86% | 55,405 psi | 85% | 2717 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,057 psi | 86% | 2717 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,769 psi | 89% | 2805 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,057 psi | 86% | 2812 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 46,238 psi | 71% | 2756 fps | 96.8% |
| Norma URP | <<locked>> | 98% | 55,506 psi | 85% | 2818 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 90% | 58,378 psi | 90% | 2831 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 57,754 psi | 89% | 2867 fps | 99.4% |
| Ramshot TAC | <<locked>> | 84% | 55,709 psi | 86% | 2743 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,521 psi | 85% | 2759 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,420 psi | 87% | 2723 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 56% | 1709 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 58,581 psi | 90% | 2746 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,202 psi | 86% | 2762 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,419 psi | 85% | 2831 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,882 psi | 84% | 2864 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,347 psi | 87% | 2854 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,535 psi | 85% | 2881 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,492 psi | 87% | 2697 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,883 psi | 86% | 2713 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 58,697 psi | 90% | 2802 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 48,921 psi | 75% | 2730 fps | 96% |
| Rottweil R 907 | <<locked>> | 96% | 58,407 psi | 90% | 2785 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,188 psi | 86% | 2756 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,623 psi | 87% | 2746 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,188 psi | 88% | 2753 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,406 psi | 88% | 2795 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,637 psi | 87% | 2815 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 58,001 psi | 89% | 2776 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 58,711 psi | 90% | 2795 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,811 psi | 87% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,971 psi | 88% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,463 psi | 87% | 2713 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,457 psi | 75% | 2723 fps | 95.9% |
| Somchem S321 | <<locked>> | 82% | 56,855 psi | 87% | 2753 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,202 psi | 86% | 2651 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,624 psi | 89% | 2766 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,317 psi | 85% | 2753 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,476 psi | 82% | 2818 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,661 psi | 76% | 2710 fps | 97% |
| Vihtavuori N130 | <<locked>> | 82% | 56,507 psi | 87% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,116 psi | 88% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,724 psi | 86% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,608 psi | 87% | 2697 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,695 psi | 87% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,943 psi | 89% | 2812 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 56,173 psi | 86% | 2720 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 58,320 psi | 90% | 2740 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,898 psi | 88% | 2818 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,774 psi | 70% | 2713 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 58,349 psi | 90% | 2792 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,231 psi | 87% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,840 psi | 86% | 2831 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,999 psi | 57% | 2654 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,085 psi | 85% | 2753 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% | 51,024 psi | 78% | 2579 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,714 psi | 67% | 2510 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,850 psi | 78% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,629 psi | 70% | 2543 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 37,927 psi | 58% | 2503 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 41,336 psi | 64% | 2510 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,706 psi | 50% | 2402 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 47,050 psi | 72% | 2621 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,842 psi | 61% | 2474 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 48,037 psi | 74% | 2700 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,095 psi | 76% | 2625 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,879 psi | 77% | 2602 fps | 100% |
| Alliant Power Pro 2000-MR | 51.9 gr | 80% | 43,004 psi | 66% | 2664 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 47,703 psi | 73% | 2697 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,827 psi | 61% | 2503 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,670 psi | 66% | 2562 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,909 psi | 51% | 2415 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,476 psi | 53% | 2480 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,036 psi | 72% | 2690 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,616 psi | 44% | 2326 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,085 psi | 54% | 2556 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,340 psi | 71% | 2631 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 39,537 psi | 61% | 2507 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 42,989 psi | 66% | 2533 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,589 psi | 78% | 2608 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,312 psi | 74% | 2651 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,432 psi | 82% | 2799 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,219 psi | 62% | 2510 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 40,001 psi | 62% | 2556 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 88% | 46,369 psi | 71% | 2631 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 47,500 psi | 73% | 2631 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,384 psi | 44% | 2264 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,439 psi | 67% | 2605 fps | 99.8% |
| Hodgdon Superformance | 59.4 gr | 88% | 42,337 psi | 65% | 2628 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,658 psi | 41% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,426 psi | 70% | 2582 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 47,340 psi | 73% | 2618 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,858 psi | 64% | 2507 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,483 psi | 68% | 2533 fps | 96.3% |
| IMR 4350 | <<locked>> | 90% | 43,207 psi | 66% | 2559 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,887 psi | 64% | 2513 fps | 95.5% |
| IMR 4831 | <<locked>> | 82% | 31,792 psi | 49% | 2362 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 43,743 psi | 67% | 2592 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 49,095 psi | 76% | 2625 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,528 psi | 72% | 2602 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,833 psi | 72% | 2559 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,090 psi | 65% | 2513 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 36,724 psi | 56% | 2411 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 39,595 psi | 61% | 2490 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,006 psi | 71% | 2572 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,427 psi | 71% | 2575 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,061 psi | 65% | 2552 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 49,008 psi | 75% | 2700 fps | 95.5% |
| Norma MRP | <<locked>> | 96% | 40,509 psi | 62% | 2641 fps | 95% |
| Norma URP | <<locked>> | 82% | 33,083 psi | 51% | 2405 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 41,771 psi | 64% | 2569 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 39,102 psi | 60% | 2546 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 49,008 psi | 75% | 2638 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,602 psi | 75% | 2654 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,924 psi | 81% | 2674 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 42% | 1526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 54,824 psi | 84% | 2697 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,524 psi | 62% | 2493 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,281 psi | 70% | 2667 fps | 99.3% |
| ReloadSwiss RS 60 | 51.1 gr | 80% | 36,695 psi | 56% | 2543 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,430 psi | 50% | 2415 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 34,548 psi | 53% | 2470 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 49,995 psi | 77% | 2605 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,743 psi | 67% | 2526 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,159 psi | 57% | 2451 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 45,832 psi | 71% | 2674 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 42,989 psi | 66% | 2533 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,724 psi | 56% | 2411 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,528 psi | 72% | 2602 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,090 psi | 65% | 2513 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,595 psi | 61% | 2490 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,247 psi | 59% | 2503 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,326 psi | 73% | 2615 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,527 psi | 70% | 2595 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,152 psi | 73% | 2520 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,407 psi | 61% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,872 psi | 63% | 2457 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,440 psi | 70% | 2667 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 53,243 psi | 82% | 2703 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,833 psi | 72% | 2520 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,181 psi | 73% | 2612 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 37,956 psi | 58% | 2457 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 27,688 psi | 43% | 2303 fps | 97.1% |
| Somchem S385 | <<locked>> | 96% | 43,453 psi | 67% | 2602 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 53,084 psi | 82% | 2569 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,558 psi | 73% | 2510 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,468 psi | 67% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,845 psi | 67% | 2513 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,042 psi | 55% | 2395 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 32,256 psi | 50% | 2352 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 49,226 psi | 76% | 2621 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,279 psi | 65% | 2503 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,939 psi | 52% | 2405 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 30,806 psi | 47% | 2398 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,952 psi | 49% | 2329 fps | 97.5% |
| Winchester 748 | <<locked>> | 80% | 49,284 psi | 76% | 2671 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,001 psi | 62% | 2556 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,645 psi | 44% | 2402 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,005 psi | 69% | 2598 fps | 99.8% |
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 104 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 180gr | Sako SuperHammerhead. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,894 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,894 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 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 1:14.0 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. Alliant Power Pro 2000-MR, Hodgdon Superformance, ReloadSwiss RS 60 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 180gr | Sako SuperHammerhead 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.