Load Specifications
Load data in caliber .300 WSM with .308 | 150gr | Ferrobull Entox Sport bullet and 99 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% | 55,158 psi | 86% | 2949 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,203 psi | 90% | 3028 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,450 psi | 90% | 3022 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,056 psi | 85% | 3025 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,056 psi | 85% | 3025 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,505 psi | 85% | 2972 fps | 96.6% |
| Accurate 4064 | <<locked>> | 92% | 57,290 psi | 90% | 3068 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,143 psi | 85% | 3104 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 54,665 psi | 86% | 3058 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 55,622 psi | 87% | 3054 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,188 psi | 90% | 3061 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,505 psi | 85% | 2982 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,375 psi | 85% | 3176 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,767 psi | 87% | 3081 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,173 psi | 88% | 3100 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 3169 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 57,159 psi | 90% | 3212 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,508 psi | 62% | 2874 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,425 psi | 70% | 3045 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,549 psi | 85% | 3071 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 56,304 psi | 88% | 3094 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,550 psi | 89% | 3064 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,332 psi | 87% | 2992 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,797 psi | 89% | 3091 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,940 psi | 86% | 3136 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 57,145 psi | 90% | 3041 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 57,435 psi | 90% | 3110 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 55,245 psi | 87% | 3127 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 98% | 55,637 psi | 87% | 3087 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 86% | 55,245 psi | 87% | 3071 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,648 psi | 81% | 3031 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,853 psi | 86% | 3104 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,389 psi | 85% | 3140 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,302 psi | 55% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,361 psi | 87% | 3054 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 57,232 psi | 90% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,418 psi | 85% | 3028 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,087 psi | 89% | 3048 fps | 97.9% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,913 psi | 89% | 3087 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,926 psi | 86% | 3038 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,414 psi | 76% | 2989 fps | 98.8% |
| IMR 4895 | <<locked>> | 90% | 57,682 psi | 90% | 3133 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 57,188 psi | 90% | 3061 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 57,159 psi | 90% | 3041 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,331 psi | 85% | 3031 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,595 psi | 90% | 3035 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 54,795 psi | 86% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,667 psi | 90% | 3084 fps | 99% |
| Lovex S070 | <<locked>> | 98% | 55,303 psi | 87% | 3071 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 56,594 psi | 89% | 3051 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,232 psi | 90% | 3051 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,405 psi | 87% | 3087 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 56,869 psi | 89% | 3150 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 56,333 psi | 88% | 3114 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,709 psi | 87% | 3143 fps | 98.5% |
| Ramshot TAC | <<locked>> | 86% | 57,522 psi | 90% | 3077 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,130 psi | 90% | 3097 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,346 psi | 85% | 3005 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,839 psi | 56% | 1936 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,492 psi | 89% | 3038 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,244 psi | 85% | 3031 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,927 psi | 89% | 3176 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,710 psi | 89% | 3209 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,128 psi | 85% | 3130 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,609 psi | 90% | 3222 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 86% | 57,348 psi | 90% | 3031 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,130 psi | 90% | 3048 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,159 psi | 88% | 3084 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,550 psi | 89% | 3064 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,667 psi | 90% | 3084 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,331 psi | 85% | 3031 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,795 psi | 86% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,303 psi | 87% | 3071 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,549 psi | 85% | 3094 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,898 psi | 88% | 3054 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,550 psi | 89% | 3081 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,737 psi | 86% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,303 psi | 87% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,433 psi | 85% | 2979 fps | 97.4% |
| Somchem S321 | <<locked>> | 82% | 54,694 psi | 86% | 3035 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,479 psi | 90% | 2982 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,637 psi | 87% | 3045 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 56,449 psi | 88% | 3084 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,227 psi | 80% | 3094 fps | 100% |
| Unknown powder | <<locked>> | 96% | 54,375 psi | 85% | 3100 fps | 99% |
| Vihtavuori N130 | <<locked>> | 84% | 56,768 psi | 89% | 2936 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,696 psi | 90% | 2963 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,884 psi | 89% | 3009 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,101 psi | 89% | 3022 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,244 psi | 85% | 3009 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,027 psi | 86% | 3074 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 56,840 psi | 89% | 3068 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,855 psi | 89% | 3048 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,303 psi | 87% | 3123 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,294 psi | 68% | 2953 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,492 psi | 89% | 3071 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,578 psi | 86% | 3064 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,245 psi | 87% | 3127 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,157 psi | 55% | 2861 fps | 98.1% |
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% | 48,718 psi | 76% | 2854 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,592 psi | 84% | 2976 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,988 psi | 64% | 2762 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,021 psi | 74% | 2913 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,021 psi | 74% | 2913 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,718 psi | 75% | 2858 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,798 psi | 61% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,288 psi | 55% | 2733 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 44,991 psi | 71% | 2884 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 38,261 psi | 60% | 2720 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,108 psi | 74% | 2894 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 47,572 psi | 75% | 2884 fps | 100% |
| Alliant Power Pro 2000-MR | 59.2 gr | 80% | 40,988 psi | 64% | 2910 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,811 psi | 59% | 2740 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,625 psi | 64% | 2808 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,476 psi | 56% | 2746 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,605 psi | 51% | 2697 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 32,561 psi | 51% | 2694 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 96% | 38,348 psi | 60% | 2900 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,309 psi | 69% | 2884 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 37,362 psi | 59% | 2743 fps | 98.3% |
| Bofors RP7 | <<locked>> | 90% | 46,659 psi | 73% | 2887 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,718 psi | 76% | 2884 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,006 psi | 72% | 2913 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,140 psi | 80% | 3074 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 50,183 psi | 79% | 2940 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,232 psi | 60% | 2743 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 88% | 44,759 psi | 70% | 2936 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 96% | 52,388 psi | 82% | 3031 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 45,411 psi | 71% | 2897 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,458 psi | 48% | 2579 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,015 psi | 61% | 2808 fps | 98.7% |
| Hodgdon Superformance | 70.9 gr | 92% | 46,876 psi | 73% | 2999 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,179 psi | 41% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,393 psi | 63% | 2776 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 41,365 psi | 65% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,362 psi | 59% | 2694 fps | 96.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 44,788 psi | 70% | 2825 fps | 95.2% |
| IMR 4350 | <<locked>> | 94% | 47,108 psi | 74% | 2917 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,571 psi | 71% | 2867 fps | 95.3% |
| IMR 4831 | <<locked>> | 90% | 35,070 psi | 55% | 2707 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 41,640 psi | 65% | 2844 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 47,108 psi | 74% | 2894 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 53,301 psi | 84% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,121 psi | 69% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,005 psi | 71% | 2822 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,929 psi | 63% | 2759 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 39,653 psi | 62% | 2749 fps | 95.2% |
| Lovex S070 | <<locked>> | 92% | 45,455 psi | 71% | 2894 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 43,888 psi | 69% | 2831 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 44,367 psi | 70% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,016 psi | 63% | 2799 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 35,592 psi | 56% | 2733 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 39,682 psi | 62% | 2808 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 42,598 psi | 67% | 2897 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 47,007 psi | 74% | 2897 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,673 psi | 73% | 2920 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,821 psi | 80% | 2943 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 42% | 1732 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,924 psi | 83% | 2986 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 44,266 psi | 69% | 2848 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,989 psi | 67% | 2920 fps | 98.2% |
| ReloadSwiss RS 60 | 58.3 gr | 80% | 34,751 psi | 54% | 2772 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,768 psi | 59% | 2812 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 40,538 psi | 64% | 2887 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 47,674 psi | 75% | 2877 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,698 psi | 65% | 2779 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 35,085 psi | 55% | 2680 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 90% | 46,659 psi | 73% | 2887 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,653 psi | 62% | 2749 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,121 psi | 69% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,929 psi | 63% | 2759 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 45,455 psi | 71% | 2894 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,245 psi | 57% | 2736 fps | 96.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,223 psi | 71% | 2867 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,526 psi | 68% | 2848 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,382 psi | 71% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,724 psi | 59% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,701 psi | 70% | 2808 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 51,039 psi | 80% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,918 psi | 70% | 2785 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,107 psi | 71% | 2867 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 35,984 psi | 56% | 2690 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 27,760 psi | 44% | 2556 fps | 95.5% |
| Unknown powder | <<locked>> | 86% | 38,943 psi | 61% | 2802 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 50,270 psi | 79% | 2841 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,772 psi | 67% | 2733 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,365 psi | 65% | 2766 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,423 psi | 65% | 2762 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,501 psi | 48% | 2530 fps | 97% |
| Vihtavuori N160 | <<locked>> | 84% | 36,405 psi | 57% | 2717 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 49,719 psi | 78% | 2953 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,089 psi | 64% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,738 psi | 58% | 2756 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 32,982 psi | 52% | 2717 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,327 psi | 48% | 2536 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 50,821 psi | 80% | 3002 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,759 psi | 70% | 2936 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,835 psi | 48% | 2717 fps | 95.7% |
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 118 powders for .300 WSM loaded with the .308 | 150gr | Ferrobull Entox Sport. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,222 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,222 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 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 1:12.5 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 | Ferrobull Entox Sport 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.