Load Specifications
Load data in caliber .300 WSM with .308 | 155gr | Sierra MatchKing 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 ReloadSwiss RS 70.
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>> | 84% | 57,188 psi | 90% | 2920 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,478 psi | 89% | 2946 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,463 psi | 88% | 3002 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,463 psi | 88% | 2949 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,439 psi | 68% | 2831 fps | 96.3% |
| Accurate 4064 | <<locked>> | 90% | 56,391 psi | 88% | 2995 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,695 psi | 89% | 3087 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 56,420 psi | 88% | 3028 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 57,551 psi | 90% | 3028 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,245 psi | 87% | 2976 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,579 psi | 89% | 2949 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,318 psi | 88% | 3153 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 57,725 psi | 90% | 3051 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,766 psi | 86% | 3022 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 3143 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,288 psi | 87% | 3127 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,234 psi | 65% | 2864 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,528 psi | 73% | 3038 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,405 psi | 88% | 3045 fps | 99.7% |
| Bofors RP3 | <<locked>> | 90% | 54,810 psi | 86% | 3012 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,795 psi | 86% | 2979 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,014 psi | 89% | 2959 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,897 psi | 86% | 3005 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,130 psi | 90% | 3114 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 55,259 psi | 87% | 2956 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,738 psi | 87% | 3028 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 57,116 psi | 90% | 3104 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 98% | 57,566 psi | 90% | 3064 fps | 97% |
| Hodgdon H4895 | <<locked>> | 86% | 57,014 psi | 89% | 3038 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,795 psi | 84% | 3012 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,840 psi | 89% | 3074 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,362 psi | 88% | 3120 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,723 psi | 56% | 1860 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,246 psi | 90% | 3025 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,477 psi | 87% | 2995 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,086 psi | 88% | 2995 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,579 psi | 87% | 2969 fps | 97.8% |
| IMR 4350 | <<locked>> | 98% | 55,288 psi | 87% | 3009 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,594 psi | 89% | 3012 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,575 psi | 79% | 2972 fps | 99.2% |
| IMR 4895 | <<locked>> | 88% | 56,144 psi | 88% | 3054 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,245 psi | 87% | 2976 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,463 psi | 88% | 3002 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,767 psi | 87% | 2949 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 56,927 psi | 89% | 3005 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,333 psi | 88% | 3012 fps | 99% |
| Lovex S070 | <<locked>> | 98% | 57,188 psi | 90% | 3045 fps | 98.3% |
| Norma 201 | <<locked>> | 86% | 55,114 psi | 86% | 2969 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,869 psi | 88% | 2972 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,566 psi | 90% | 3061 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,101 psi | 88% | 3061 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 55,317 psi | 87% | 3071 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 88% | 54,462 psi | 85% | 3031 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 54,288 psi | 85% | 3064 fps | 98.5% |
| Ramshot TAC | <<locked>> | 84% | 55,724 psi | 87% | 2995 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,347 psi | 87% | 3015 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,202 psi | 88% | 2976 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,143 psi | 57% | 1900 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,115 psi | 88% | 3009 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,172 psi | 86% | 3087 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,824 psi | 86% | 3123 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,347 psi | 88% | 3110 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,782 psi | 87% | 3140 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 84% | 56,217 psi | 88% | 2953 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,680 psi | 87% | 2969 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,897 psi | 86% | 3009 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,795 psi | 86% | 2979 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,333 psi | 88% | 3012 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,463 psi | 88% | 3002 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 56,927 psi | 89% | 3005 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,188 psi | 90% | 3045 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,550 psi | 89% | 3068 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,056 psi | 85% | 2969 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,810 psi | 86% | 2995 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,478 psi | 89% | 2907 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,913 psi | 89% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,420 psi | 88% | 2959 fps | 97.9% |
| Somchem S321 | <<locked>> | 82% | 56,797 psi | 89% | 3012 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,898 psi | 88% | 2904 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,508 psi | 90% | 3018 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,129 psi | 86% | 3005 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,606 psi | 84% | 3074 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,676 psi | 78% | 2943 fps | 96.1% |
| Unknown powder | <<locked>> | 96% | 56,434 psi | 88% | 3077 fps | 99.4% |
| Vihtavuori N130 | <<locked>> | 82% | 55,100 psi | 86% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,260 psi | 88% | 2887 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,550 psi | 87% | 2933 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,463 psi | 87% | 2940 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,492 psi | 89% | 2986 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,203 psi | 90% | 3051 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 55,027 psi | 86% | 2982 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,376 psi | 87% | 2969 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,261 psi | 90% | 3097 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,658 psi | 72% | 2946 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,462 psi | 85% | 2989 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,710 psi | 89% | 3035 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,116 psi | 90% | 3104 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,115 psi | 58% | 2871 fps | 99.1% |
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% | 50,633 psi | 79% | 2825 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,453 psi | 68% | 2749 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,211 psi | 77% | 2894 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,369 psi | 73% | 2779 fps | 95% |
| Accurate 3100 | <<locked>> | 98% | 40,698 psi | 64% | 2776 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 41,104 psi | 64% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 34,722 psi | 54% | 2664 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 46,731 psi | 73% | 2864 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 39,726 psi | 62% | 2700 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,834 psi | 77% | 2871 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,472 psi | 78% | 2851 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,743 psi | 67% | 2897 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,523 psi | 62% | 2726 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,409 psi | 66% | 2795 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,737 psi | 54% | 2677 fps | 95.4% |
| Alliant Reloder-17 | 57.7 gr | 80% | 34,243 psi | 54% | 2690 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,211 psi | 47% | 2575 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,637 psi | 59% | 2835 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,137 psi | 72% | 2867 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 39,334 psi | 62% | 2733 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 45,556 psi | 71% | 2812 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,517 psi | 79% | 2858 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,022 psi | 75% | 2894 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,229 psi | 83% | 3051 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 80% | 51,909 psi | 81% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,059 psi | 63% | 2733 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 86% | 43,424 psi | 68% | 2858 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 94% | 50,879 psi | 80% | 2953 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 47,195 psi | 74% | 2874 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,994 psi | 47% | 2513 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,828 psi | 64% | 2792 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 90% | 45,368 psi | 71% | 2917 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 42% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,916 psi | 66% | 2756 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 43,149 psi | 68% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,841 psi | 61% | 2677 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 84% | 43,700 psi | 68% | 2749 fps | 95.1% |
| IMR 4350 | <<locked>> | 92% | 45,774 psi | 72% | 2841 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,338 psi | 69% | 2792 fps | 95.2% |
| IMR 4831 | <<locked>> | 88% | 34,563 psi | 54% | 2644 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 43,453 psi | 68% | 2828 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 48,834 psi | 77% | 2871 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 46,253 psi | 72% | 2841 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,470 psi | 73% | 2795 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 41,742 psi | 65% | 2743 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 38,885 psi | 61% | 2680 fps | 95.2% |
| Lovex S070 | <<locked>> | 90% | 44,585 psi | 70% | 2822 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 45,759 psi | 72% | 2812 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,166 psi | 72% | 2818 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,771 psi | 65% | 2782 fps | 98.6% |
| Norma 204 | <<locked>> | 96% | 52,185 psi | 82% | 2995 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 34,954 psi | 55% | 2667 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 41,510 psi | 65% | 2795 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 41,640 psi | 65% | 2825 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 48,791 psi | 76% | 2874 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,515 psi | 76% | 2897 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,605 psi | 82% | 2920 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,948 psi | 42% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,076 psi | 68% | 2772 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,962 psi | 70% | 2907 fps | 98.7% |
| ReloadSwiss RS 60 | 57.7 gr | 80% | 36,434 psi | 57% | 2762 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 36,941 psi | 58% | 2740 fps | 95.8% |
| ReloadSwiss RS 70 | 64.4 gr | 88% | 39,436 psi | 62% | 2812 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 49,647 psi | 78% | 2851 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,511 psi | 68% | 2759 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 36,999 psi | 58% | 2674 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 45,556 psi | 71% | 2812 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,885 psi | 61% | 2680 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,253 psi | 72% | 2841 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,742 psi | 65% | 2743 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 44,585 psi | 70% | 2822 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,956 psi | 59% | 2723 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,224 psi | 74% | 2851 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,223 psi | 71% | 2828 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,949 psi | 74% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,204 psi | 61% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,511 psi | 68% | 2733 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 53,055 psi | 83% | 2953 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,659 psi | 73% | 2759 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,978 psi | 74% | 2848 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 37,724 psi | 59% | 2677 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 27,514 psi | 43% | 2497 fps | 95.7% |
| Somchem S385 | <<locked>> | 98% | 46,485 psi | 73% | 2887 fps | 95.3% |
| Unknown powder | <<locked>> | 84% | 37,913 psi | 59% | 2726 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 51,851 psi | 81% | 2808 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,266 psi | 69% | 2703 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,178 psi | 68% | 2740 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,105 psi | 68% | 2740 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,256 psi | 51% | 2526 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 82% | 35,563 psi | 56% | 2644 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 51,474 psi | 81% | 2927 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,830 psi | 67% | 2762 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,158 psi | 57% | 2690 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 32,779 psi | 51% | 2657 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,836 psi | 50% | 2533 fps | 96.4% |
| Winchester 748 | <<locked>> | 80% | 52,837 psi | 83% | 2979 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,424 psi | 68% | 2858 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,443 psi | 48% | 2657 fps | 95.8% |
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 | 155gr | Sierra MatchKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,153 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. The 155.0 gr projectile in 0.308" calls for a 1:14.5 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 Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .300 WSM with the .308 | 155gr | Sierra MatchKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-22, Alliant Reloder-25, Bofors RP15 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.