Load Specifications
Bullet Manufacturer:SAKO
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:14.0
Load data in caliber .300 WSM with .308 | 180gr | Sako SuperHammerhead bullet and 106 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-16.
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 2495 | <<locked>> | 84% | 54,201 psi | 85% | 2697 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,348 psi | 90% | 2795 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,029 psi | 89% | 2766 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,617 psi | 76% | 2736 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 54,433 psi | 85% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,708 psi | 86% | 2848 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 57,261 psi | 90% | 2825 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,810 psi | 86% | 2779 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2881 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,115 psi | 88% | 2772 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,725 psi | 90% | 2740 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,696 psi | 90% | 2956 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,419 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,680 psi | 87% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,347 psi | 87% | 2900 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,652 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 2871 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2812 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,600 psi | 71% | 2756 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,030 psi | 63% | 2667 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,011 psi | 82% | 2943 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,363 psi | 90% | 2848 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,217 psi | 88% | 2818 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2812 fps | 96.6% |
| Bofors RP7 | <<locked>> | 92% | 55,811 psi | 87% | 2799 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,290 psi | 90% | 2749 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,753 psi | 87% | 2802 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,681 psi | 89% | 2835 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,911 psi | 86% | 2867 fps | 99% |
| Hodgdon H4350 | <<locked>> | 94% | 55,274 psi | 87% | 2828 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 54,476 psi | 85% | 2785 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,579 psi | 87% | 2825 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,549 psi | 85% | 2825 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,508 psi | 90% | 2940 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 57% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,621 psi | 86% | 2772 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,029 psi | 89% | 2789 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,203 psi | 90% | 2802 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,289 psi | 88% | 2782 fps | 99% |
| IMR 4350 | <<locked>> | 96% | 56,289 psi | 88% | 2825 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,493 psi | 90% | 2825 fps | 99.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2844 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,145 psi | 90% | 2851 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,477 psi | 87% | 2812 fps | 96% |
| IMR 8208 XBR | <<locked>> | 82% | 56,115 psi | 88% | 2772 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,638 psi | 90% | 2799 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,333 psi | 88% | 2749 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,549 psi | 85% | 2759 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,276 psi | 90% | 2822 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 55,056 psi | 86% | 2812 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,234 psi | 63% | 2585 fps | 97% |
| Norma 201 | <<locked>> | 84% | 56,057 psi | 88% | 2769 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,652 psi | 89% | 2766 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,926 psi | 86% | 2808 fps | 100% |
| Norma 204 | <<locked>> | 96% | 57,290 psi | 90% | 2881 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,314 psi | 80% | 2894 fps | 98.5% |
| Norma URP | <<locked>> | 96% | 56,985 psi | 89% | 2881 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,796 psi | 87% | 2838 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,592 psi | 86% | 2910 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 55,782 psi | 87% | 2884 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,297 psi | 74% | 2762 fps | 96.8% |
| Ramshot TAC | <<locked>> | 82% | 56,014 psi | 88% | 2799 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,101 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,753 psi | 89% | 2818 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,594 psi | 89% | 2890 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,289 psi | 88% | 2923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,447 psi | 85% | 2871 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,000 psi | 89% | 2953 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 56,768 psi | 89% | 2743 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,681 psi | 89% | 2769 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,028 psi | 88% | 2808 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2854 fps | 97% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,085 psi | 85% | 2858 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 92% | 55,811 psi | 87% | 2799 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,276 psi | 90% | 2822 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,638 psi | 90% | 2799 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,549 psi | 85% | 2759 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,056 psi | 86% | 2812 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,244 psi | 85% | 2822 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,752 psi | 86% | 2776 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,608 psi | 87% | 2799 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,174 psi | 90% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,580 psi | 90% | 2700 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,363 psi | 90% | 2776 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,592 psi | 84% | 2851 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 56,666 psi | 89% | 2700 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,447 psi | 85% | 2766 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,217 psi | 88% | 2808 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 55,970 psi | 88% | 2795 fps | 95.8% |
| Somchem S365 | <<locked>> | 98% | 55,840 psi | 88% | 2884 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2835 fps | 98.5% |
| Unknown powder | <<locked>> | 92% | 54,157 psi | 85% | 2835 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 86% | 57,000 psi | 89% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,724 psi | 89% | 2726 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,362 psi | 88% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,711 psi | 90% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,694 psi | 86% | 2808 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,368 psi | 71% | 2667 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 86% | 56,217 psi | 88% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,129 psi | 86% | 2854 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,126 psi | 80% | 2835 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,419 psi | 87% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,911 psi | 86% | 2867 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,988 psi | 64% | 2795 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2861 fps | 97.9% |
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 2495 | <<locked>> | 80% | 47,688 psi | 75% | 2608 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,577 psi | 84% | 2746 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,321 psi | 65% | 2503 fps | 95.3% |
| Accurate 3100 | <<locked>> | 90% | 34,519 psi | 54% | 2464 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 45,121 psi | 71% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,707 psi | 53% | 2457 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 80% | 50,444 psi | 79% | 2723 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,018 psi | 67% | 2579 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 45,934 psi | 72% | 2713 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,547 psi | 82% | 2723 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,085 psi | 85% | 2694 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,688 psi | 73% | 2779 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,192 psi | 68% | 2605 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,050 psi | 72% | 2667 fps | 99.7% |
| Alliant Reloder-16 | 51.9 gr | 80% | 33,431 psi | 52% | 2470 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,478 psi | 59% | 2592 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,397 psi | 71% | 2707 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,208 psi | 71% | 2749 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,659 psi | 43% | 2333 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,273 psi | 55% | 2552 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,488 psi | 49% | 2500 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,111 psi | 79% | 2736 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,163 psi | 68% | 2612 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,208 psi | 71% | 2749 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 40,959 psi | 64% | 2536 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,925 psi | 85% | 2700 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,156 psi | 82% | 2749 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,700 psi | 68% | 2618 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 80% | 38,943 psi | 61% | 2572 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 43,236 psi | 68% | 2618 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 51,010 psi | 80% | 2733 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,951 psi | 49% | 2369 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,759 psi | 70% | 2667 fps | 100% |
| Hodgdon Superformance | 62.1 gr | 84% | 40,190 psi | 63% | 2628 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 42% | 1539 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,339 psi | 71% | 2625 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 47,340 psi | 74% | 2654 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,235 psi | 66% | 2559 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,713 psi | 65% | 2526 fps | 96.3% |
| IMR 4350 | <<locked>> | 86% | 41,278 psi | 65% | 2566 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,813 psi | 62% | 2513 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 29,704 psi | 47% | 2339 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 47,224 psi | 74% | 2697 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,156 psi | 82% | 2759 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 52,547 psi | 82% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,560 psi | 79% | 2703 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,908 psi | 78% | 2654 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,324 psi | 71% | 2612 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,376 psi | 59% | 2467 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 37,884 psi | 59% | 2497 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 35,418 psi | 56% | 2484 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 49,530 psi | 78% | 2671 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,082 psi | 78% | 2674 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,426 psi | 71% | 2654 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 46,818 psi | 73% | 2710 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 39,030 psi | 61% | 2651 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 33,924 psi | 53% | 2461 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 45,440 psi | 71% | 2674 fps | 99.8% |
| Ramshot Grand | <<locked>> | 98% | 50,778 psi | 80% | 2844 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 82% | 35,056 psi | 55% | 2493 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 44,005 psi | 69% | 2703 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 52,562 psi | 82% | 2743 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,547 psi | 82% | 2762 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 43% | 1572 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,888 psi | 69% | 2602 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,487 psi | 78% | 2779 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,871 psi | 62% | 2651 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,446 psi | 52% | 2474 fps | 96.2% |
| ReloadSwiss RS 70 | 56.8 gr | 80% | 32,953 psi | 52% | 2474 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 53,679 psi | 84% | 2700 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,079 psi | 74% | 2625 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,727 psi | 64% | 2559 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 96% | 50,778 psi | 80% | 2746 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 94% | 44,237 psi | 69% | 2687 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 40,959 psi | 64% | 2536 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,376 psi | 59% | 2467 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,560 psi | 79% | 2703 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,324 psi | 71% | 2612 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,884 psi | 59% | 2497 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,698 psi | 65% | 2612 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,213 psi | 80% | 2723 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,052 psi | 77% | 2697 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,372 psi | 79% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,366 psi | 66% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,001 psi | 61% | 2464 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 43,801 psi | 69% | 2684 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 50,227 psi | 79% | 2612 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,995 psi | 80% | 2713 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,220 psi | 65% | 2562 fps | 99.6% |
| Somchem S361 | <<locked>> | 96% | 52,446 psi | 82% | 2740 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 30,371 psi | 48% | 2415 fps | 98.7% |
| Somchem S385 | <<locked>> | 92% | 42,090 psi | 66% | 2618 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 36,535 psi | 57% | 2510 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 80% | 47,703 psi | 75% | 2552 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,050 psi | 74% | 2592 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,804 psi | 73% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,230 psi | 55% | 2415 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 36,593 psi | 57% | 2487 fps | 97.4% |
| Vihtavuori N165 | <<locked>> | 98% | 42,583 psi | 67% | 2615 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 46,383 psi | 73% | 2621 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,202 psi | 58% | 2530 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 82% | 28,152 psi | 44% | 2356 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,635 psi | 54% | 2434 fps | 98.8% |
| Winchester 760 | <<locked>> | 80% | 38,943 psi | 61% | 2572 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 25,976 psi | 41% | 2356 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,108 psi | 72% | 2684 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 106 powders for .300 WSM loaded with the .308 | 180gr | Sako SuperHammerhead. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,956 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, 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 Reloder-19 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, Hodgdon Superformance, Alliant Reloder-16 rank at the top here: for .300 WSM 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.