Load Specifications
Load data in caliber .300 WSM with .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC 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 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.
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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% | 55,376 psi | 87% | 2936 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,421 psi | 90% | 3012 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,201 psi | 85% | 2959 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,070 psi | 85% | 3009 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,070 psi | 85% | 3009 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,418 psi | 85% | 2953 fps | 96.3% |
| Accurate 4064 | <<locked>> | 92% | 57,609 psi | 90% | 3054 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 53,809 psi | 84% | 3081 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 86% | 54,476 psi | 85% | 3035 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 55,419 psi | 87% | 3035 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,898 psi | 89% | 3038 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,273 psi | 85% | 2966 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 53,969 psi | 85% | 3153 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,622 psi | 87% | 3058 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,072 psi | 88% | 3081 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,042 psi | 86% | 3143 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,666 psi | 89% | 3186 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,421 psi | 62% | 2854 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,280 psi | 69% | 3022 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,201 psi | 85% | 3045 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 56,159 psi | 88% | 3071 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,362 psi | 88% | 3038 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,187 psi | 86% | 2969 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,478 psi | 89% | 3071 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,665 psi | 86% | 3114 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 56,898 psi | 89% | 3022 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 57,232 psi | 90% | 3087 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 54,781 psi | 86% | 3104 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 98% | 55,390 psi | 87% | 3064 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 86% | 55,013 psi | 86% | 3048 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,387 psi | 81% | 3012 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,418 psi | 85% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,969 psi | 85% | 3114 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,375 psi | 55% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,027 psi | 86% | 3031 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 56,797 psi | 89% | 3058 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,551 psi | 90% | 3058 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,898 psi | 89% | 3025 fps | 97.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,507 psi | 89% | 3061 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,810 psi | 86% | 3018 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,327 psi | 76% | 2969 fps | 98.6% |
| IMR 4895 | <<locked>> | 90% | 57,508 psi | 90% | 3114 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 56,898 psi | 89% | 3038 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 57,203 psi | 90% | 3022 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,288 psi | 85% | 3012 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,290 psi | 90% | 3012 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 54,969 psi | 86% | 3018 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,566 psi | 90% | 3064 fps | 98.8% |
| Lovex S070 | <<locked>> | 98% | 55,013 psi | 86% | 3045 fps | 97.5% |
| Norma 201 | <<locked>> | 88% | 56,753 psi | 89% | 3035 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,290 psi | 90% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,245 psi | 87% | 3064 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 3117 fps | 95.9% |
| Norma URPᴾ | <<locked>> | 100% | 56,695 psi | 89% | 3130 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 90% | 56,043 psi | 88% | 3094 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3120 fps | 98.3% |
| Ramshot TAC | <<locked>> | 86% | 57,450 psi | 90% | 3058 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,043 psi | 89% | 3077 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,186 psi | 85% | 2982 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,955 psi | 56% | 1923 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,362 psi | 88% | 3018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,624 psi | 90% | 3068 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,681 psi | 89% | 3153 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,144 psi | 88% | 3186 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3163 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,130 psi | 90% | 3196 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 86% | 57,551 psi | 90% | 3015 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,072 psi | 89% | 3028 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,014 psi | 88% | 3064 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,362 psi | 88% | 3038 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,566 psi | 90% | 3064 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,288 psi | 85% | 3012 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,969 psi | 86% | 3018 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,013 psi | 86% | 3045 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,230 psi | 85% | 3071 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,709 psi | 87% | 3031 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,420 psi | 88% | 3058 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,621 psi | 86% | 2920 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,013 psi | 86% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,375 psi | 85% | 2959 fps | 97.2% |
| Somchem S321 | <<locked>> | 82% | 54,592 psi | 86% | 3015 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,609 psi | 90% | 2966 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,274 psi | 87% | 3022 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 56,217 psi | 88% | 3061 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,850 psi | 80% | 3074 fps | 100% |
| Unknown powder | <<locked>> | 98% | 57,595 psi | 90% | 3133 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 84% | 56,521 psi | 89% | 2913 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,479 psi | 90% | 2943 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,855 psi | 89% | 2992 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,884 psi | 89% | 2999 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,215 psi | 85% | 2992 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,534 psi | 85% | 3048 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 84% | 56,739 psi | 89% | 3048 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,739 psi | 89% | 3031 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,882 psi | 86% | 3097 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,337 psi | 68% | 2940 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,999 psi | 88% | 3048 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,331 psi | 85% | 3041 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,781 psi | 86% | 3104 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,346 psi | 55% | 2844 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,711 psi | 90% | 3087 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% | 48,907 psi | 77% | 2838 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,519 psi | 84% | 2956 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,684 psi | 65% | 2756 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,210 psi | 74% | 2897 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,210 psi | 74% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 51,024 psi | 80% | 2894 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 39,421 psi | 62% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,462 psi | 56% | 2717 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 44,947 psi | 70% | 2864 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 38,203 psi | 60% | 2700 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,036 psi | 74% | 2874 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 47,543 psi | 75% | 2867 fps | 100% |
| Alliant Power Pro 2000-MR | 57.8 gr | 80% | 41,060 psi | 64% | 2890 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,869 psi | 59% | 2726 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,683 psi | 64% | 2792 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,636 psi | 56% | 2733 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,837 psi | 51% | 2684 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 32,677 psi | 51% | 2677 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 38,435 psi | 60% | 2884 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,396 psi | 70% | 2867 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 37,608 psi | 59% | 2730 fps | 98.2% |
| Bofors RP7 | <<locked>> | 92% | 49,647 psi | 78% | 2923 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,776 psi | 76% | 2864 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,122 psi | 72% | 2897 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,865 psi | 80% | 3048 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 49,908 psi | 78% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,450 psi | 60% | 2730 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 90% | 47,659 psi | 75% | 2976 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 96% | 52,083 psi | 82% | 3005 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 45,397 psi | 71% | 2877 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,705 psi | 48% | 2566 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,015 psi | 61% | 2789 fps | 98.5% |
| Hodgdon Superformance | 70.7 gr | 94% | 50,241 psi | 79% | 3045 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 41% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,495 psi | 63% | 2759 fps | 98.4% |
| IMR 3031 | <<locked>> | 80% | 41,408 psi | 65% | 2805 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,478 psi | 59% | 2677 fps | 96.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,587 psi | 75% | 2861 fps | 95.6% |
| IMR 4350 | <<locked>> | 96% | 49,806 psi | 78% | 2949 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,455 psi | 71% | 2848 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 35,172 psi | 55% | 2694 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 41,684 psi | 65% | 2825 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 47,036 psi | 74% | 2874 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 53,534 psi | 84% | 2969 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,295 psi | 69% | 2844 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,078 psi | 71% | 2802 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 40,219 psi | 63% | 2749 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 42,424 psi | 66% | 2792 fps | 95.8% |
| Lovex S070 | <<locked>> | 92% | 45,614 psi | 71% | 2874 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 44,237 psi | 69% | 2818 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 44,324 psi | 69% | 2825 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,074 psi | 63% | 2779 fps | 97.9% |
| Norma 204 | <<locked>> | 98% | 53,708 psi | 84% | 3054 fps | 95.1% |
| Norma URP | <<locked>> | 86% | 35,766 psi | 56% | 2720 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 39,784 psi | 62% | 2795 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 92% | 42,525 psi | 67% | 2877 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 47,108 psi | 74% | 2877 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,514 psi | 73% | 2897 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,879 psi | 80% | 2927 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,672 psi | 42% | 1719 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,779 psi | 83% | 2963 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 44,266 psi | 69% | 2831 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,917 psi | 67% | 2904 fps | 98% |
| ReloadSwiss RS 60 | 56.9 gr | 80% | 34,940 psi | 55% | 2759 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,753 psi | 59% | 2792 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 40,509 psi | 63% | 2864 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 48,037 psi | 75% | 2861 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,032 psi | 66% | 2766 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 35,317 psi | 55% | 2667 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 49,647 psi | 78% | 2923 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,424 psi | 66% | 2792 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,295 psi | 69% | 2844 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,219 psi | 63% | 2749 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 45,614 psi | 71% | 2874 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,347 psi | 57% | 2720 fps | 96.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,440 psi | 71% | 2851 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,569 psi | 68% | 2831 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,469 psi | 71% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,840 psi | 59% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 47,718 psi | 75% | 2844 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 51,169 psi | 80% | 2959 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,165 psi | 71% | 2772 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,237 psi | 71% | 2851 fps | 98.8% |
| Somchem S355 | <<locked>> | 80% | 36,318 psi | 57% | 2680 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 28,065 psi | 44% | 2546 fps | 95.4% |
| Unknown powder | <<locked>> | 86% | 38,870 psi | 61% | 2782 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 50,256 psi | 79% | 2822 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,757 psi | 67% | 2713 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,495 psi | 65% | 2749 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,582 psi | 65% | 2749 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,951 psi | 49% | 2523 fps | 97% |
| Vihtavuori N160 | <<locked>> | 84% | 36,448 psi | 57% | 2697 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 49,588 psi | 78% | 2933 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 41,162 psi | 65% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,985 psi | 58% | 2746 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 94% | 35,447 psi | 56% | 2762 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,661 psi | 48% | 2526 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 50,821 psi | 80% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 47,659 psi | 75% | 2976 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 31,053 psi | 49% | 2700 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,809 psi | 84% | 3025 fps | 99.9% |
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 117 powders for .300 WSM loaded with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,196 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,196 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 150.0 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-16 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 WSM with the .308 | 150gr | Alaska Bullet Works Kodiak SP PSPBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.