Load Specifications
Bullet:.308 | 167gr | Hasler ARIETE
Bullet Manufacturer:Hasler
Bullet Weight:167 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:1:10.5
Load data in caliber .300 WSM with .308 | 167gr | Hasler ARIETE bullet and 101 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.
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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% | 54,940 psi | 86% | 2766 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,971 psi | 89% | 2844 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,898 psi | 89% | 2835 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,682 psi | 90% | 2897 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,682 psi | 90% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,186 psi | 85% | 2799 fps | 97% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,163 psi | 66% | 2697 fps | 96.3% |
| Accurate 4064 | <<locked>> | 90% | 55,143 psi | 86% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,911 psi | 86% | 2936 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 55,405 psi | 87% | 2884 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,391 psi | 88% | 2881 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,288 psi | 85% | 2831 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,390 psi | 87% | 2808 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,042 psi | 86% | 3002 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,637 psi | 89% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,276 psi | 90% | 2933 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,231 psi | 88% | 2995 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,722 psi | 84% | 2976 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,176 psi | 63% | 2726 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,107 psi | 71% | 2894 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,317 psi | 87% | 2900 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 57,479 psi | 90% | 2923 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,101 psi | 89% | 2890 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,927 psi | 88% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,260 psi | 88% | 2904 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,679 psi | 86% | 2953 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 54,230 psi | 85% | 2812 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,578 psi | 86% | 2884 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 55,651 psi | 87% | 2956 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 98% | 55,259 psi | 87% | 2907 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 86% | 55,956 psi | 88% | 2894 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,301 psi | 82% | 2867 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,389 psi | 85% | 2917 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,766 psi | 86% | 2969 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,534 psi | 56% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,056 psi | 86% | 2867 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,433 psi | 85% | 2851 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,187 psi | 86% | 2854 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,418 psi | 85% | 2825 fps | 97.8% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2920 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,650 psi | 86% | 2861 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,298 psi | 77% | 2831 fps | 99.2% |
| IMR 4895 | <<locked>> | 88% | 55,056 psi | 86% | 2907 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,288 psi | 85% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,347 psi | 87% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,824 psi | 86% | 2808 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,811 psi | 87% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,926 psi | 86% | 2864 fps | 98.9% |
| Lovex S070 | <<locked>> | 98% | 56,057 psi | 88% | 2904 fps | 98.3% |
| Norma 201 | <<locked>> | 88% | 57,725 psi | 90% | 2877 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,679 psi | 86% | 2828 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,434 psi | 88% | 2917 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,679 psi | 86% | 2913 fps | 96.1% |
| Norma URPᴾ | <<locked>> | 100% | 57,522 psi | 90% | 2976 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 57,087 psi | 89% | 2943 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2976 fps | 99% |
| Ramshot TAC | <<locked>> | 84% | 54,549 psi | 85% | 2851 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,244 psi | 85% | 2871 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,230 psi | 87% | 2835 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,216 psi | 57% | 1801 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,305 psi | 90% | 2861 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,955 psi | 86% | 2867 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,041 psi | 85% | 2943 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,276 psi | 90% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,650 psi | 86% | 2959 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,172 psi | 85% | 2986 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 84% | 55,259 psi | 87% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,752 psi | 86% | 2828 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,000 psi | 89% | 2910 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,101 psi | 89% | 2890 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,926 psi | 86% | 2864 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,347 psi | 87% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,811 psi | 87% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 54,752 psi | 86% | 2887 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,187 psi | 86% | 2923 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,797 psi | 89% | 2887 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,363 psi | 90% | 2907 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,506 psi | 87% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,782 psi | 87% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,332 psi | 87% | 2818 fps | 98% |
| Somchem S321 | <<locked>> | 82% | 55,477 psi | 87% | 2864 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,984 psi | 86% | 2762 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,449 psi | 88% | 2877 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 57,334 psi | 90% | 2910 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2927 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,327 psi | 76% | 2805 fps | 96.1% |
| Unknown powder | <<locked>> | 96% | 55,129 psi | 86% | 2933 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 84% | 57,696 psi | 90% | 2759 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,143 psi | 86% | 2743 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,507 psi | 89% | 2825 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,491 psi | 85% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,100 psi | 86% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,535 psi | 87% | 2900 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 57,551 psi | 90% | 2890 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,682 psi | 90% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,883 psi | 88% | 2953 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,338 psi | 69% | 2808 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,913 psi | 89% | 2900 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,303 psi | 87% | 2887 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,651 psi | 87% | 2956 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,056 psi | 56% | 2736 fps | 99% |
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% | 48,515 psi | 76% | 2674 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,098 psi | 83% | 2789 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,756 psi | 64% | 2595 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,818 psi | 73% | 2740 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,818 psi | 73% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,326 psi | 74% | 2687 fps | 95.5% |
| Accurate 3100 | <<locked>> | 98% | 39,291 psi | 62% | 2641 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,248 psi | 63% | 2612 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,852 psi | 53% | 2539 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 45,905 psi | 72% | 2726 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 39,044 psi | 61% | 2575 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,008 psi | 75% | 2733 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,443 psi | 76% | 2713 fps | 100% |
| Alliant Power Pro 2000-MR | 54.2 gr | 80% | 41,785 psi | 65% | 2759 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,841 psi | 61% | 2598 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,611 psi | 65% | 2661 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,040 psi | 53% | 2552 fps | 95.6% |
| Alliant Reloder-17 | 53.4 gr | 80% | 33,489 psi | 52% | 2566 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,559 psi | 46% | 2454 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,506 psi | 57% | 2700 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,237 psi | 71% | 2730 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 38,392 psi | 60% | 2598 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 44,527 psi | 70% | 2677 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,559 psi | 78% | 2717 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,701 psi | 72% | 2740 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,836 psi | 80% | 2890 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 80% | 50,952 psi | 80% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,262 psi | 62% | 2605 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 86% | 42,569 psi | 67% | 2726 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 94% | 48,733 psi | 76% | 2799 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 46,354 psi | 73% | 2736 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,457 psi | 46% | 2398 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,350 psi | 65% | 2694 fps | 99.4% |
| Hodgdon Superformance | 63.5 gr | 90% | 44,266 psi | 69% | 2779 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,426 psi | 41% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,118 psi | 63% | 2608 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 42,395 psi | 66% | 2664 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,319 psi | 60% | 2552 fps | 97.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 43,018 psi | 67% | 2621 fps | 95.3% |
| IMR 4350 | <<locked>> | 92% | 44,802 psi | 70% | 2703 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,656 psi | 67% | 2648 fps | 95.1% |
| IMR 4831 | <<locked>> | 88% | 33,794 psi | 53% | 2520 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 42,627 psi | 67% | 2690 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 48,008 psi | 75% | 2733 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,121 psi | 71% | 2703 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,745 psi | 72% | 2657 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 40,944 psi | 64% | 2612 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 38,174 psi | 60% | 2556 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 41,046 psi | 64% | 2635 fps | 95% |
| Norma 201 | <<locked>> | 80% | 45,005 psi | 71% | 2677 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 45,397 psi | 71% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,973 psi | 64% | 2651 fps | 98.7% |
| Norma 204 | <<locked>> | 96% | 51,184 psi | 80% | 2858 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 34,272 psi | 54% | 2543 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 40,538 psi | 64% | 2661 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 40,582 psi | 64% | 2690 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 47,921 psi | 75% | 2740 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,558 psi | 75% | 2759 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,605 psi | 81% | 2779 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,919 psi | 42% | 1608 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,737 psi | 84% | 2812 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,537 psi | 62% | 2585 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,048 psi | 69% | 2769 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,650 psi | 56% | 2635 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,663 psi | 53% | 2552 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,537 psi | 60% | 2677 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 48,878 psi | 77% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,873 psi | 67% | 2631 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 36,143 psi | 57% | 2546 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 44,527 psi | 70% | 2677 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,174 psi | 60% | 2556 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,121 psi | 71% | 2703 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,944 psi | 64% | 2612 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 90% | 42,322 psi | 66% | 2667 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,202 psi | 58% | 2595 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,282 psi | 73% | 2713 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,469 psi | 70% | 2694 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,166 psi | 72% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,508 psi | 60% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,685 psi | 67% | 2605 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 52,069 psi | 82% | 2812 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,876 psi | 72% | 2628 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,093 psi | 72% | 2713 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 37,028 psi | 58% | 2552 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 26,905 psi | 42% | 2379 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 45,165 psi | 71% | 2746 fps | 95.3% |
| Unknown powder | <<locked>> | 84% | 37,101 psi | 58% | 2598 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 51,155 psi | 80% | 2671 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,671 psi | 68% | 2572 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,089 psi | 64% | 2595 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,337 psi | 66% | 2608 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,575 psi | 49% | 2405 fps | 98% |
| Vihtavuori N160 | <<locked>> | 82% | 34,751 psi | 54% | 2516 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 50,633 psi | 79% | 2785 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,872 psi | 66% | 2625 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,331 psi | 55% | 2562 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 31,792 psi | 50% | 2530 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,227 psi | 49% | 2411 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 51,808 psi | 81% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,569 psi | 67% | 2726 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,646 psi | 46% | 2533 fps | 95.9% |
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 101 powders for .300 WSM loaded with the .308 | 167gr | Hasler ARIETE. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,031 fps; across all powders the maximum-charge window runs from 1,755 fps to 3,031 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 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 167.0 gr projectile in 0.308" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-16, Alliant Reloder-23 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 WSM with the .308 | 167gr | Hasler ARIETE 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.