Load Specifications
Load data in caliber .300 WSM with .308 | 165gr | Hornady SST InterLock bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Hodgdon H414.
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% | 57,406 psi | 90% | 2818 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,304 psi | 88% | 2844 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,346 psi | 85% | 2864 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,172 psi | 86% | 2848 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,526 psi | 68% | 2746 fps | 96.7% |
| Accurate 4064 | <<locked>> | 90% | 56,391 psi | 88% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,666 psi | 89% | 2989 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 56,507 psi | 89% | 2927 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 57,392 psi | 90% | 2923 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,448 psi | 87% | 2877 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,579 psi | 89% | 2848 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,492 psi | 89% | 3054 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 57,638 psi | 90% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,766 psi | 86% | 2920 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,537 psi | 90% | 3045 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,998 psi | 86% | 3022 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,220 psi | 65% | 2776 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,456 psi | 73% | 2946 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,478 psi | 89% | 2946 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 54,795 psi | 86% | 2913 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,897 psi | 86% | 2884 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,869 psi | 89% | 2854 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,027 psi | 86% | 2907 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,000 psi | 89% | 3009 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,811 psi | 87% | 2927 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 55,564 psi | 87% | 2982 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 55,999 psi | 88% | 2943 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 86% | 57,145 psi | 90% | 2936 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,650 psi | 84% | 2910 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,840 psi | 89% | 2972 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,246 psi | 88% | 3022 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 56% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,737 psi | 86% | 2887 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,334 psi | 90% | 2917 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,087 psi | 89% | 2910 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,956 psi | 89% | 2894 fps | 98.3% |
| IMR 4350 | <<locked>> | 98% | 55,230 psi | 87% | 2910 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,724 psi | 89% | 2917 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,811 psi | 89% | 2972 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 56,159 psi | 88% | 2949 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,448 psi | 87% | 2877 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,536 psi | 89% | 2900 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,927 psi | 88% | 2854 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 56,913 psi | 89% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,260 psi | 88% | 2910 fps | 99.1% |
| Lovex S070 | <<locked>> | 98% | 57,348 psi | 90% | 2949 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 55,303 psi | 87% | 2874 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,869 psi | 88% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,450 psi | 90% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,811 psi | 87% | 2959 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 46,195 psi | 72% | 2900 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 55,477 psi | 87% | 2972 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 54,650 psi | 86% | 2933 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 53,998 psi | 85% | 2966 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 55,680 psi | 87% | 2897 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,245 psi | 87% | 2910 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,217 psi | 88% | 2877 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,172 psi | 57% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,999 psi | 88% | 2910 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,274 psi | 87% | 2986 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,926 psi | 86% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,173 psi | 88% | 3009 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,419 psi | 87% | 3035 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 56,086 psi | 88% | 2851 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,695 psi | 87% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,940 psi | 86% | 2910 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,897 psi | 86% | 2884 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,260 psi | 88% | 2910 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,536 psi | 89% | 2900 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,913 psi | 89% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,348 psi | 90% | 2949 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,579 psi | 89% | 2969 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,186 psi | 85% | 2874 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,824 psi | 86% | 2897 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,550 psi | 89% | 2805 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,797 psi | 89% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,579 psi | 89% | 2864 fps | 98.2% |
| Somchem S321 | <<locked>> | 82% | 56,797 psi | 89% | 2907 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,115 psi | 88% | 2805 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,624 psi | 90% | 2920 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,013 psi | 86% | 2904 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,403 psi | 84% | 2972 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,647 psi | 78% | 2854 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 56,115 psi | 88% | 2762 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,826 psi | 89% | 2789 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,724 psi | 87% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,463 psi | 88% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,623 psi | 89% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,128 psi | 85% | 2913 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 55,956 psi | 88% | 2877 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,375 psi | 85% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,753 psi | 89% | 2969 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,629 psi | 72% | 2854 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,302 psi | 85% | 2890 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,883 psi | 88% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,564 psi | 87% | 2982 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,985 psi | 58% | 2785 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,737 psi | 86% | 2904 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% | 50,763 psi | 80% | 2726 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,468 psi | 68% | 2654 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,734 psi | 80% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 45,368 psi | 71% | 2680 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 37,768 psi | 59% | 2631 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 41,118 psi | 64% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,576 psi | 51% | 2526 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 46,688 psi | 73% | 2766 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,740 psi | 62% | 2615 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,718 psi | 76% | 2769 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,472 psi | 78% | 2753 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,801 psi | 67% | 2805 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,581 psi | 62% | 2638 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,322 psi | 66% | 2700 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,808 psi | 51% | 2539 fps | 95.1% |
| Alliant Reloder-17 | 55 gr | 80% | 34,200 psi | 54% | 2608 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,226 psi | 47% | 2497 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 92% | 34,896 psi | 55% | 2677 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,021 psi | 72% | 2772 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,349 psi | 62% | 2641 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 45,455 psi | 71% | 2720 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,560 psi | 79% | 2759 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,051 psi | 75% | 2799 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,185 psi | 83% | 2949 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 80% | 40,103 psi | 63% | 2648 fps | 97% |
| Hodgdon H414 | 59.2 gr | 88% | 42,598 psi | 67% | 2749 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 49,197 psi | 77% | 2828 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,108 psi | 74% | 2776 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,166 psi | 44% | 2382 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,395 psi | 68% | 2753 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 45,208 psi | 71% | 2825 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 42% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,310 psi | 71% | 2730 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 47,195 psi | 74% | 2769 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,756 psi | 65% | 2648 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,266 psi | 69% | 2671 fps | 95.7% |
| IMR 4350 | <<locked>> | 92% | 45,803 psi | 72% | 2749 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,367 psi | 70% | 2700 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 33,707 psi | 53% | 2539 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 43,381 psi | 68% | 2730 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 48,718 psi | 76% | 2769 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,108 psi | 72% | 2743 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,485 psi | 73% | 2697 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 41,713 psi | 65% | 2651 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 38,957 psi | 61% | 2595 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 41,959 psi | 66% | 2677 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,774 psi | 72% | 2717 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,224 psi | 72% | 2723 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,727 psi | 65% | 2687 fps | 98.9% |
| Norma 204 | <<locked>> | 96% | 52,272 psi | 82% | 2904 fps | 95.7% |
| Norma MRP | <<locked>> | 98% | 43,062 psi | 67% | 2835 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 35,099 psi | 55% | 2585 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 41,582 psi | 65% | 2707 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 39,015 psi | 61% | 2680 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 48,892 psi | 77% | 2785 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,356 psi | 76% | 2799 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,678 psi | 83% | 2825 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 42% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,509 psi | 63% | 2628 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,049 psi | 71% | 2812 fps | 99% |
| ReloadSwiss RS 60 | 55 gr | 80% | 36,376 psi | 57% | 2674 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,505 psi | 54% | 2598 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 36,970 psi | 58% | 2664 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 49,777 psi | 78% | 2753 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,671 psi | 68% | 2671 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,086 psi | 58% | 2589 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 45,455 psi | 71% | 2720 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,957 psi | 61% | 2595 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,108 psi | 72% | 2743 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,713 psi | 65% | 2651 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 41,959 psi | 66% | 2677 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,072 psi | 60% | 2638 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,326 psi | 74% | 2759 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,353 psi | 71% | 2736 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,036 psi | 74% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,276 psi | 62% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,526 psi | 68% | 2644 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 52,910 psi | 83% | 2851 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,673 psi | 73% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,833 psi | 73% | 2753 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,753 psi | 59% | 2589 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 27,601 psi | 43% | 2421 fps | 96.3% |
| Somchem S385 | <<locked>> | 98% | 46,311 psi | 73% | 2795 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 52,924 psi | 83% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,398 psi | 74% | 2654 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,279 psi | 68% | 2648 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,801 psi | 69% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,998 psi | 56% | 2526 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 34,287 psi | 54% | 2533 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 48,979 psi | 77% | 2769 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,235 psi | 66% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,707 psi | 53% | 2530 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 30,719 psi | 48% | 2523 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,763 psi | 50% | 2451 fps | 96.8% |
| Winchester 748 | <<locked>> | 80% | 48,950 psi | 77% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 42,772 psi | 67% | 2753 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,572 psi | 45% | 2516 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,846 psi | 70% | 2740 fps | 99.6% |
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 98 powders for .300 WSM loaded with the .308 | 165gr | Hornady SST InterLock. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,054 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 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 165.0 gr projectile in 0.308" calls for a 1:12.5 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 Reloder-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for .300 WSM with the .308 | 165gr | Hornady SST InterLock 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.