Load Specifications
Bullet Manufacturer:Hornady
Bullet Weight:178 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:1:12.5
Load data in caliber .300 WSM with .308 | 178gr | Hornady ELD Match 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, Alliant Reloder-17 and Hodgdon Superformance.
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% | 56,710 psi | 89% | 2703 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,057 psi | 88% | 2733 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,363 psi | 90% | 2795 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,462 psi | 85% | 2743 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,746 psi | 73% | 2713 fps | 98.2% |
| Accurate 4064 | <<locked>> | 88% | 56,246 psi | 88% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,536 psi | 89% | 2884 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,738 psi | 87% | 2812 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,826 psi | 89% | 2815 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2861 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,578 psi | 86% | 2759 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,159 psi | 88% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,869 psi | 88% | 2940 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2861 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,363 psi | 90% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,157 psi | 85% | 2808 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,174 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,882 psi | 86% | 2913 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,185 psi | 83% | 2851 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2785 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,164 psi | 69% | 2740 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,696 psi | 61% | 2641 fps | 96.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2917 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,724 psi | 87% | 2831 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,621 psi | 86% | 2808 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2785 fps | 95.9% |
| Bofors RP7 | <<locked>> | 94% | 57,725 psi | 90% | 2835 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,057 psi | 88% | 2743 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,273 psi | 85% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,245 psi | 87% | 2822 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 55,361 psi | 87% | 2881 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 92% | 55,521 psi | 87% | 2838 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 84% | 56,391 psi | 88% | 2822 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,493 psi | 90% | 2861 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,478 psi | 89% | 2861 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,753 psi | 87% | 2920 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,897 psi | 56% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,711 psi | 90% | 2825 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,956 psi | 89% | 2802 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,550 psi | 89% | 2802 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,043 psi | 88% | 2785 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 54,766 psi | 86% | 2812 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,202 psi | 88% | 2815 fps | 98.8% |
| IMR 4831 | <<locked>> | 98% | 56,898 psi | 89% | 2874 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,579 psi | 87% | 2838 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,578 psi | 86% | 2759 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,014 psi | 88% | 2789 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,911 psi | 86% | 2740 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,478 psi | 89% | 2795 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,666 psi | 87% | 2805 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 56,884 psi | 89% | 2844 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,754 psi | 61% | 2566 fps | 96.3% |
| Norma 201 | <<locked>> | 84% | 54,505 psi | 85% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,114 psi | 86% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,174 psi | 90% | 2851 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,405 psi | 87% | 2861 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 49,327 psi | 77% | 2867 fps | 97.9% |
| Norma URP | <<locked>> | 96% | 55,230 psi | 87% | 2867 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 54,070 psi | 85% | 2822 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,725 psi | 90% | 2923 fps | 99.6% |
| Ramshot TAC | <<locked>> | 82% | 54,694 psi | 86% | 2785 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,679 psi | 86% | 2802 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 57% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,463 psi | 87% | 2805 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,897 psi | 86% | 2874 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,476 psi | 85% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,246 psi | 88% | 2907 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,245 psi | 87% | 2933 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,463 psi | 87% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,129 psi | 86% | 2756 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,505 psi | 85% | 2799 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 2838 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,170 psi | 82% | 2835 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 94% | 57,725 psi | 90% | 2835 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,666 psi | 87% | 2805 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,014 psi | 88% | 2789 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,478 psi | 89% | 2795 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,884 psi | 89% | 2844 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,246 psi | 88% | 2861 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,101 psi | 89% | 2818 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,215 psi | 85% | 2785 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,912 psi | 88% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,376 psi | 88% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,811 psi | 87% | 2759 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,677 psi | 81% | 2831 fps | 97% |
| Somchem S335 | <<locked>> | 84% | 55,201 psi | 87% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,724 psi | 89% | 2805 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,752 psi | 86% | 2795 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2917 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 2815 fps | 98% |
| Vihtavuori N133 | <<locked>> | 84% | 56,304 psi | 88% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,303 psi | 87% | 2720 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,680 psi | 87% | 2736 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,028 psi | 88% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,740 psi | 90% | 2864 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,600 psi | 71% | 2677 fps | 96% |
| Vihtavuori N530 | <<locked>> | 82% | 55,056 psi | 86% | 2759 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,450 psi | 90% | 2782 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,826 psi | 89% | 2871 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,066 psi | 77% | 2815 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,983 psi | 85% | 2789 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,361 psi | 87% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,361 psi | 87% | 2881 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,566 psi | 62% | 2772 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,230 psi | 85% | 2795 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 2749 fps | 96.2% |
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% | 53,171 psi | 83% | 2657 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,282 psi | 73% | 2595 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,824 psi | 84% | 2749 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,744 psi | 70% | 2582 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 35,679 psi | 56% | 2500 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,772 psi | 69% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,576 psi | 51% | 2438 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 80% | 49,226 psi | 77% | 2713 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,901 psi | 66% | 2566 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 47,543 psi | 75% | 2749 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,300 psi | 80% | 2710 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,576 psi | 82% | 2687 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,310 psi | 71% | 2762 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,585 psi | 70% | 2694 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,003 psi | 66% | 2592 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,860 psi | 70% | 2654 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,619 psi | 51% | 2454 fps | 96.2% |
| Alliant Reloder-17 | 54.9 gr | 80% | 36,448 psi | 57% | 2579 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,905 psi | 74% | 2743 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,874 psi | 69% | 2730 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,731 psi | 42% | 2313 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,361 psi | 57% | 2585 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,692 psi | 51% | 2539 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,733 psi | 76% | 2723 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 41,916 psi | 66% | 2598 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 43,874 psi | 69% | 2730 fps | 95% |
| Bofors RP7 | <<locked>> | 84% | 42,351 psi | 66% | 2572 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,736 psi | 83% | 2694 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,720 psi | 79% | 2740 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,583 psi | 67% | 2605 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 39,784 psi | 62% | 2602 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 46,064 psi | 72% | 2677 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 49,777 psi | 78% | 2723 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,008 psi | 47% | 2352 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,209 psi | 72% | 2703 fps | 100% |
| Hodgdon Superformance | 62.4 gr | 86% | 41,901 psi | 66% | 2671 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 42% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,790 psi | 75% | 2674 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,096 psi | 79% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,048 psi | 69% | 2598 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,311 psi | 73% | 2621 fps | 97.2% |
| IMR 4350 | <<locked>> | 88% | 42,699 psi | 67% | 2602 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,827 psi | 61% | 2500 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 31,633 psi | 50% | 2402 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 46,006 psi | 72% | 2684 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,300 psi | 80% | 2710 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,023 psi | 77% | 2690 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,747 psi | 76% | 2641 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,150 psi | 69% | 2602 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,361 psi | 57% | 2451 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 39,131 psi | 61% | 2533 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 36,390 psi | 57% | 2513 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 48,312 psi | 76% | 2661 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,805 psi | 76% | 2664 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,237 psi | 69% | 2641 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 45,397 psi | 71% | 2690 fps | 95% |
| Norma MRP | <<locked>> | 94% | 40,437 psi | 63% | 2690 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 32,866 psi | 52% | 2444 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 44,034 psi | 69% | 2657 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,318 psi | 57% | 2533 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,256 psi | 80% | 2730 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,126 psi | 80% | 2746 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,325 psi | 43% | 1575 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,656 psi | 67% | 2585 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,863 psi | 75% | 2762 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,798 psi | 61% | 2638 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,256 psi | 51% | 2454 fps | 95.5% |
| ReloadSwiss RS 70 | 57.1 gr | 82% | 34,200 psi | 54% | 2513 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 52,344 psi | 82% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,890 psi | 72% | 2615 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,523 psi | 62% | 2546 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 52,620 psi | 82% | 2782 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 96% | 45,643 psi | 72% | 2723 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 42,351 psi | 66% | 2572 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,361 psi | 57% | 2451 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,023 psi | 77% | 2690 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,150 psi | 69% | 2602 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,131 psi | 61% | 2533 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,379 psi | 63% | 2595 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,864 psi | 78% | 2710 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,674 psi | 75% | 2680 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,400 psi | 77% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,452 psi | 65% | 2474 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,553 psi | 64% | 2500 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,208 psi | 71% | 2717 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 49,037 psi | 77% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,632 psi | 78% | 2700 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,089 psi | 63% | 2549 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,399 psi | 46% | 2395 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 40,698 psi | 64% | 2598 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 49,850 psi | 78% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,905 psi | 72% | 2585 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,325 psi | 73% | 2598 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,247 psi | 60% | 2484 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,113 psi | 53% | 2441 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 98% | 42,699 psi | 67% | 2621 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 51,677 psi | 81% | 2710 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,643 psi | 70% | 2592 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,736 psi | 53% | 2444 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 29,051 psi | 46% | 2388 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,649 psi | 53% | 2418 fps | 98.4% |
| Winchester 748 | <<locked>> | 80% | 51,982 psi | 81% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,784 psi | 62% | 2602 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,803 psi | 42% | 2388 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,572 psi | 75% | 2690 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 46,369 psi | 73% | 2694 fps | 95.4% |
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 106 powders for .300 WSM loaded with the .308 | 178gr | Hornady ELD Match. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,940 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,940 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 56–90 %, leaving at least 10 % headroom. The 178.0 gr projectile in 0.308" calls for a 1:12.5 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, Hodgdon Superformance rank at the top here: for .300 WSM with the .308 | 178gr | Hornady ELD Match 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.