Load Specifications
Load data in caliber .300 WSM with .308 | 150gr | Norma ECO Strike bullet and 102 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, ReloadSwiss RS 60 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.
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>> | 86% | 55,738 psi | 87% | 2936 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,682 psi | 90% | 3012 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,261 psi | 90% | 3002 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,304 psi | 88% | 3028 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,711 psi | 90% | 3005 fps | 96.7% |
| Accurate 4064 | <<locked>> | 94% | 57,217 psi | 90% | 3048 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,737 psi | 84% | 3077 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 54,853 psi | 86% | 3035 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 55,956 psi | 88% | 3031 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,537 psi | 90% | 3041 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,607 psi | 86% | 2969 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,767 psi | 87% | 3100 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,795 psi | 86% | 3156 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,666 psi | 87% | 3054 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,376 psi | 87% | 2943 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,376 psi | 88% | 3077 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 3084 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,869 psi | 89% | 3182 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,593 psi | 57% | 2779 fps | 97.1% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,595 psi | 90% | 2920 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,868 psi | 86% | 3048 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 56,304 psi | 88% | 3071 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,753 psi | 89% | 3038 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,738 psi | 87% | 2969 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,029 psi | 89% | 3071 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,361 psi | 87% | 3120 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 54,549 psi | 85% | 2982 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,840 psi | 88% | 3012 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,725 psi | 90% | 3087 fps | 99.2% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 3133 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 88% | 55,434 psi | 87% | 3048 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,921 psi | 75% | 2949 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,694 psi | 86% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,360 psi | 85% | 3107 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,128 psi | 55% | 1860 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,840 psi | 89% | 3051 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,288 psi | 87% | 3035 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,550 psi | 87% | 3018 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,738 psi | 87% | 2995 fps | 97.1% |
| IMR 4198 | <<locked>> | 82% | 55,347 psi | 87% | 2900 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 3002 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,288 psi | 87% | 3015 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,691 psi | 79% | 3005 fps | 98.8% |
| IMR 4895 | <<locked>> | 90% | 54,201 psi | 85% | 3054 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 57,537 psi | 90% | 3041 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,940 psi | 85% | 2969 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,462 psi | 85% | 3012 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,578 psi | 86% | 2963 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 55,056 psi | 86% | 3012 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,653 psi | 90% | 3058 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 3041 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 56,811 psi | 89% | 3031 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,740 psi | 90% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,477 psi | 87% | 3061 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 53,040 psi | 83% | 3064 fps | 99% |
| Ramshot Big Game | <<locked>> | 92% | 56,565 psi | 89% | 3094 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,938 psi | 81% | 3054 fps | 97.5% |
| Ramshot TAC | <<locked>> | 86% | 54,418 psi | 85% | 2999 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,027 psi | 85% | 3022 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,056 psi | 86% | 2989 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,447 psi | 56% | 1903 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,159 psi | 90% | 3025 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,549 psi | 85% | 3012 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,913 psi | 89% | 3150 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,594 psi | 89% | 3186 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,505 psi | 84% | 3097 fps | 98.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,606 psi | 84% | 3127 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 88% | 57,537 psi | 90% | 3012 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,508 psi | 90% | 3028 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,144 psi | 88% | 3061 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,753 psi | 89% | 3038 fps | 96.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,653 psi | 90% | 3058 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,462 psi | 85% | 3012 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,056 psi | 86% | 3012 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 3041 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,826 psi | 89% | 2992 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,404 psi | 85% | 3068 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,434 psi | 88% | 2969 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,376 psi | 88% | 3035 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,884 psi | 89% | 3058 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,405 psi | 87% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,492 psi | 87% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,853 psi | 86% | 2956 fps | 97% |
| Somchem S321 | <<locked>> | 84% | 55,347 psi | 87% | 3022 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,621 psi | 86% | 2920 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,057 psi | 88% | 3028 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 56,492 psi | 89% | 3058 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,224 psi | 74% | 3009 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,013 psi | 86% | 2887 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,593 psi | 87% | 2910 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 57,174 psi | 90% | 2995 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,766 psi | 86% | 2963 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,665 psi | 86% | 2986 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 3068 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 86% | 54,505 psi | 85% | 2986 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,304 psi | 88% | 3005 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,665 psi | 86% | 3068 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,682 psi | 62% | 2861 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3048 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,215 psi | 85% | 3035 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 3133 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,840 psi | 89% | 3068 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% | 46,021 psi | 72% | 2789 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,386 psi | 79% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,101 psi | 60% | 2690 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,484 psi | 71% | 2858 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,328 psi | 79% | 2884 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 36,071 psi | 57% | 2677 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 37,405 psi | 59% | 2766 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 42,496 psi | 67% | 2808 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 35,984 psi | 56% | 2644 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,599 psi | 70% | 2822 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 44,556 psi | 70% | 2818 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,156 psi | 82% | 3041 fps | 99.8% |
| Alliant Power Pro 2000-MR | 55.8 gr | 80% | 38,508 psi | 60% | 2822 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,375 psi | 55% | 2664 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,880 psi | 81% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,189 psi | 60% | 2733 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,855 psi | 59% | 2785 fps | 95.8% |
| Alliant Reloder-17 | 56.3 gr | 82% | 32,692 psi | 51% | 2674 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,329 psi | 51% | 2661 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 54,027 psi | 85% | 2871 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,742 psi | 65% | 2808 fps | 97% |
| Bofors RP3 | <<locked>> | 80% | 34,693 psi | 54% | 2661 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 49,879 psi | 78% | 2920 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,427 psi | 73% | 2818 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,163 psi | 68% | 2838 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,790 psi | 75% | 2989 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 51,053 psi | 80% | 2930 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,156 psi | 82% | 2956 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,493 psi | 60% | 2730 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 94% | 46,427 psi | 73% | 2946 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 42,859 psi | 67% | 2822 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,343 psi | 51% | 2608 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,740 psi | 61% | 2782 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 96% | 50,575 psi | 79% | 3041 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,904 psi | 41% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,162 psi | 65% | 2769 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 42,235 psi | 66% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,753 psi | 59% | 2680 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,168 psi | 77% | 2881 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 52,344 psi | 82% | 2858 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 50,067 psi | 78% | 2946 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,791 psi | 76% | 2904 fps | 95.6% |
| IMR 4831 | <<locked>> | 90% | 36,187 psi | 57% | 2717 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,131 psi | 61% | 2766 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 44,599 psi | 70% | 2822 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 50,285 psi | 79% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,278 psi | 65% | 2785 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 42,844 psi | 67% | 2749 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 37,652 psi | 59% | 2687 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 42,119 psi | 66% | 2779 fps | 95.4% |
| Lovex S070 | <<locked>> | 94% | 45,571 psi | 71% | 2867 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 41,307 psi | 65% | 2756 fps | 99% |
| Norma 202 | <<locked>> | 80% | 41,698 psi | 65% | 2772 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,594 psi | 59% | 2720 fps | 97% |
| Norma URP | <<locked>> | 90% | 37,927 psi | 59% | 2772 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 37,130 psi | 58% | 2730 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 94% | 42,380 psi | 66% | 2867 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 44,585 psi | 70% | 2822 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,990 psi | 69% | 2844 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,211 psi | 76% | 2874 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,252 psi | 41% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,053 psi | 78% | 2913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,643 psi | 70% | 2831 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,943 psi | 63% | 2838 fps | 97.1% |
| ReloadSwiss RS 60 | 54.9 gr | 80% | 32,489 psi | 51% | 2684 fps | 98.1% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,362 psi | 59% | 2782 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,683 psi | 64% | 2861 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,237 psi | 71% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,334 psi | 62% | 2707 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 32,663 psi | 51% | 2602 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 49,879 psi | 78% | 2920 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,119 psi | 66% | 2779 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,278 psi | 65% | 2785 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 37,652 psi | 59% | 2687 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 94% | 45,571 psi | 71% | 2867 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,982 psi | 83% | 2933 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,939 psi | 53% | 2657 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,837 psi | 83% | 2917 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,598 psi | 67% | 2789 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,046 psi | 64% | 2776 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,946 psi | 67% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,520 psi | 56% | 2575 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,964 psi | 75% | 2841 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 48,254 psi | 76% | 2907 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 42,424 psi | 66% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,482 psi | 67% | 2792 fps | 98.1% |
| Somchem S355 | <<locked>> | 80% | 33,634 psi | 53% | 2612 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 29,515 psi | 46% | 2592 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 48,588 psi | 76% | 2792 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,265 psi | 68% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,682 psi | 61% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,508 psi | 62% | 2703 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 32,010 psi | 50% | 2549 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 88% | 37,159 psi | 58% | 2717 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 44,483 psi | 70% | 2815 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,000 psi | 60% | 2687 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 39,059 psi | 61% | 2776 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 34,606 psi | 54% | 2743 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,735 psi | 51% | 2579 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 44,048 psi | 69% | 2861 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 46,673 psi | 73% | 2953 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,350 psi | 63% | 2776 fps | 98.3% |
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 114 powders for .300 WSM loaded with the .308 | 150gr | Norma ECO Strike. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,186 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,186 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 150gr | Norma ECO Strike they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.