Load Specifications
Load data in caliber .300 WSM with .308 | 150gr | Speer Deep Curl Flat Points bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, 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.
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% | 54,621 psi | 86% | 2940 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,435 psi | 90% | 3015 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 57,522 psi | 90% | 3074 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,392 psi | 90% | 3022 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,701 psi | 70% | 2907 fps | 96.5% |
| Accurate 4064 | <<locked>> | 90% | 57,479 psi | 90% | 3068 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,056 psi | 85% | 3100 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 57,290 psi | 90% | 3097 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,969 psi | 86% | 3045 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,173 psi | 88% | 3045 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,348 psi | 90% | 3018 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,595 psi | 90% | 3232 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,317 psi | 87% | 3071 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,753 psi | 87% | 3094 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,013 psi | 86% | 3163 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,536 psi | 89% | 3202 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,206 psi | 66% | 2933 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,688 psi | 75% | 3114 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,377 psi | 90% | 3114 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 56,014 psi | 88% | 3087 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,724 psi | 87% | 3051 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,375 psi | 85% | 2976 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,883 psi | 88% | 3074 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 55,985 psi | 88% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,782 psi | 89% | 3100 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 92% | 54,476 psi | 85% | 3117 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 96% | 55,085 psi | 86% | 3081 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,418 psi | 85% | 3054 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,940 psi | 86% | 3084 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,186 psi | 85% | 3091 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,638 psi | 90% | 3196 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 56% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,549 psi | 85% | 3041 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,695 psi | 89% | 3071 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,130 psi | 90% | 3071 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,231 psi | 88% | 3038 fps | 97.9% |
| IMR 4350 | <<locked>> | 98% | 56,405 psi | 88% | 3084 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,346 psi | 85% | 3031 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 3045 fps | 99.3% |
| IMR 4895 | <<locked>> | 88% | 57,203 psi | 90% | 3127 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,173 psi | 88% | 3045 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,522 psi | 90% | 3074 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,652 psi | 89% | 3025 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,534 psi | 85% | 3025 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,217 psi | 90% | 3081 fps | 99% |
| Lovex S070 | <<locked>> | 96% | 54,940 psi | 86% | 3064 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 56,086 psi | 88% | 3041 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,579 psi | 89% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,969 psi | 86% | 3077 fps | 99.9% |
| Norma 204 | <<locked>> | 98% | 57,101 psi | 89% | 3133 fps | 96.3% |
| Norma MRPᴾ | <<locked>> | 100% | 47,427 psi | 74% | 3068 fps | 96% |
| Norma URP | <<locked>> | 98% | 56,652 psi | 89% | 3146 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 55,651 psi | 87% | 3104 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 55,361 psi | 87% | 3136 fps | 98.6% |
| Ramshot TAC | <<locked>> | 84% | 56,463 psi | 88% | 3064 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,260 psi | 88% | 3084 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,927 psi | 89% | 3045 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,201 psi | 57% | 1949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,000 psi | 89% | 3081 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,246 psi | 88% | 3159 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,159 psi | 88% | 3202 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,682 psi | 90% | 3182 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,855 psi | 89% | 3212 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 84% | 56,942 psi | 89% | 3022 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,594 psi | 89% | 3041 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,811 psi | 87% | 3077 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,724 psi | 87% | 3051 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,217 psi | 90% | 3081 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,522 psi | 90% | 3074 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,534 psi | 85% | 3025 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,940 psi | 86% | 3064 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,725 psi | 90% | 3143 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,114 psi | 86% | 3041 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,724 psi | 87% | 3064 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,348 psi | 90% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,389 psi | 85% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,740 psi | 90% | 3031 fps | 98.1% |
| Somchem S321 | <<locked>> | 82% | 57,493 psi | 90% | 3077 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,797 psi | 89% | 2972 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,737 psi | 86% | 3035 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 56,014 psi | 88% | 3074 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3146 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,894 psi | 80% | 3018 fps | 96.3% |
| Unknown powder | <<locked>> | 96% | 57,537 psi | 90% | 3153 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 82% | 55,709 psi | 87% | 2920 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,927 psi | 89% | 2953 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,391 psi | 88% | 3002 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,304 psi | 88% | 3009 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,508 psi | 90% | 3054 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,592 psi | 86% | 3068 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 55,825 psi | 87% | 3051 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,275 psi | 88% | 3038 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,694 psi | 86% | 3110 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,891 psi | 73% | 3018 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,492 psi | 87% | 3058 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,479 psi | 90% | 3104 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,476 psi | 85% | 3117 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,913 psi | 59% | 2943 fps | 99.2% |
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% | 51,256 psi | 80% | 2890 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,266 psi | 69% | 2812 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,154 psi | 79% | 2963 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,108 psi | 74% | 2848 fps | 95.1% |
| Accurate 3100 | <<locked>> | 98% | 41,582 psi | 65% | 2844 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 41,872 psi | 66% | 2808 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,592 psi | 56% | 2733 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 47,355 psi | 74% | 2927 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 40,408 psi | 63% | 2769 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,458 psi | 78% | 2933 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 50,459 psi | 79% | 2920 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,526 psi | 68% | 2966 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,190 psi | 63% | 2792 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,018 psi | 67% | 2858 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,346 psi | 55% | 2743 fps | 95.5% |
| Alliant Reloder-17 | 60.1 gr | 80% | 34,780 psi | 55% | 2753 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,850 psi | 48% | 2638 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,435 psi | 60% | 2900 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,876 psi | 73% | 2933 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 40,147 psi | 63% | 2799 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 46,282 psi | 73% | 2881 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,169 psi | 80% | 2923 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,878 psi | 77% | 2959 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 52,750 psi | 83% | 2976 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,785 psi | 64% | 2802 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 86% | 44,396 psi | 70% | 2927 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 92% | 48,689 psi | 76% | 2966 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 47,863 psi | 75% | 2940 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,632 psi | 48% | 2579 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,582 psi | 65% | 2858 fps | 99.2% |
| Hodgdon Superformance | 71.5 gr | 90% | 46,253 psi | 72% | 2989 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 42% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,627 psi | 67% | 2822 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 43,932 psi | 69% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,610 psi | 62% | 2743 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 84% | 44,411 psi | 70% | 2818 fps | 95.2% |
| IMR 4350 | <<locked>> | 92% | 46,673 psi | 73% | 2910 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,063 psi | 71% | 2858 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 35,346 psi | 55% | 2707 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 44,106 psi | 69% | 2890 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 49,458 psi | 78% | 2933 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 47,036 psi | 74% | 2910 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,166 psi | 74% | 2861 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 42,424 psi | 66% | 2808 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,508 psi | 62% | 2743 fps | 95.3% |
| Lovex S070 | <<locked>> | 88% | 42,699 psi | 67% | 2831 fps | 95% |
| Norma 201 | <<locked>> | 80% | 46,485 psi | 73% | 2881 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,876 psi | 73% | 2884 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,409 psi | 66% | 2848 fps | 98.7% |
| Norma 204 | <<locked>> | 96% | 53,490 psi | 84% | 3074 fps | 95.5% |
| Norma MRP | <<locked>> | 98% | 44,266 psi | 69% | 2999 fps | 95% |
| Norma URP | <<locked>> | 84% | 35,766 psi | 56% | 2733 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 42,322 psi | 66% | 2861 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 42,453 psi | 67% | 2894 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 49,472 psi | 78% | 2943 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,356 psi | 77% | 2966 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,388 psi | 84% | 2989 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,992 psi | 42% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,816 psi | 69% | 2838 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,774 psi | 72% | 2976 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,014 psi | 58% | 2828 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,331 psi | 55% | 2746 fps | 95% |
| ReloadSwiss RS 70 | 65.7 gr | 86% | 37,695 psi | 59% | 2815 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 50,531 psi | 79% | 2920 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,295 psi | 69% | 2828 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,637 psi | 59% | 2736 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 46,282 psi | 73% | 2881 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,508 psi | 62% | 2743 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,036 psi | 74% | 2910 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,424 psi | 66% | 2808 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,699 psi | 67% | 2831 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,638 psi | 61% | 2789 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,993 psi | 75% | 2920 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,963 psi | 72% | 2897 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,572 psi | 75% | 2825 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,798 psi | 62% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,324 psi | 69% | 2802 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 53,853 psi | 84% | 3022 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,355 psi | 74% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,761 psi | 75% | 2913 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 38,392 psi | 60% | 2743 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 27,992 psi | 44% | 2556 fps | 95.8% |
| Somchem S385 | <<locked>> | 98% | 47,529 psi | 74% | 2956 fps | 95.5% |
| Unknown powder | <<locked>> | 84% | 38,740 psi | 61% | 2795 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 52,562 psi | 82% | 2874 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,976 psi | 70% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,859 psi | 69% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,816 psi | 69% | 2805 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,793 psi | 51% | 2582 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 82% | 36,347 psi | 57% | 2710 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 52,388 psi | 82% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,569 psi | 68% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,970 psi | 58% | 2756 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 33,460 psi | 52% | 2720 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,358 psi | 51% | 2592 fps | 96.5% |
| Winchester 748 | <<locked>> | 80% | 53,766 psi | 84% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,396 psi | 70% | 2927 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 31,169 psi | 49% | 2730 fps | 96.2% |
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 | Speer Deep Curl Flat Points. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,232 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 56–90 %, leaving at least 10 % headroom. Accurate 3100, ADI AR 2209, ADI AR 2213 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 150gr | Speer Deep Curl Flat Points they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.