Load Specifications
Load data in caliber .300 WSM with .308 | 155gr | Berger VLD Target 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% | 55,332 psi | 87% | 2881 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,334 psi | 90% | 2959 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,740 psi | 90% | 2953 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,317 psi | 85% | 2959 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,462 psi | 85% | 2904 fps | 96.5% |
| Accurate 4064 | <<locked>> | 92% | 57,653 psi | 90% | 3005 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3091 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 54,607 psi | 86% | 2986 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 55,680 psi | 87% | 2986 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,058 psi | 89% | 2989 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,244 psi | 85% | 2910 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,186 psi | 85% | 3104 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,767 psi | 87% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,101 psi | 88% | 3028 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 3094 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,608 psi | 89% | 3133 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,494 psi | 62% | 2812 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,222 psi | 69% | 2976 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,331 psi | 85% | 2999 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 56,304 psi | 88% | 3025 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,304 psi | 88% | 2989 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,216 psi | 87% | 2917 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,594 psi | 89% | 3018 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,679 psi | 86% | 3064 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 56,869 psi | 89% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 57,392 psi | 90% | 3038 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 54,969 psi | 86% | 3058 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 98% | 55,376 psi | 87% | 3015 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 55,201 psi | 87% | 2999 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,459 psi | 81% | 2963 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,563 psi | 86% | 3028 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,853 psi | 84% | 3061 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 56% | 1837 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,245 psi | 87% | 2982 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 56,898 psi | 89% | 3005 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,551 psi | 90% | 3005 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,971 psi | 89% | 2972 fps | 97.8% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,608 psi | 89% | 3015 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,737 psi | 86% | 2966 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,341 psi | 76% | 2923 fps | 98.7% |
| IMR 4895 | <<locked>> | 90% | 57,551 psi | 90% | 3061 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 57,058 psi | 89% | 2989 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 57,421 psi | 90% | 2972 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,317 psi | 85% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,377 psi | 90% | 2963 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 54,897 psi | 86% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,551 psi | 90% | 3015 fps | 98.9% |
| Lovex S070 | <<locked>> | 98% | 55,056 psi | 86% | 2995 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 56,652 psi | 89% | 2982 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,159 psi | 90% | 2979 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,347 psi | 87% | 3015 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 3068 fps | 96.1% |
| Norma URPᴾ | <<locked>> | 100% | 56,492 psi | 89% | 3074 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 56,028 psi | 88% | 3041 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3071 fps | 98.4% |
| Ramshot TAC | <<locked>> | 86% | 57,363 psi | 90% | 3005 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,116 psi | 90% | 3028 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,404 psi | 85% | 2933 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,056 psi | 56% | 1883 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,420 psi | 88% | 2966 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,595 psi | 90% | 3018 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,782 psi | 89% | 3100 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,289 psi | 88% | 3133 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3114 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3146 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 86% | 57,551 psi | 90% | 2959 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,276 psi | 90% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,159 psi | 88% | 3015 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,304 psi | 88% | 2989 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,551 psi | 90% | 3015 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,317 psi | 85% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 54,897 psi | 86% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,056 psi | 86% | 2995 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,244 psi | 85% | 3022 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,840 psi | 88% | 2982 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,507 psi | 89% | 3009 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,853 psi | 86% | 2871 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 54,911 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,360 psi | 85% | 2910 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 54,839 psi | 86% | 2969 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,464 psi | 90% | 2910 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,405 psi | 87% | 2976 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 56,318 psi | 88% | 3012 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,966 psi | 80% | 3025 fps | 100% |
| Unknown powder | <<locked>> | 98% | 57,696 psi | 90% | 3084 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 84% | 56,637 psi | 89% | 2864 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,549 psi | 85% | 2851 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,014 psi | 89% | 2943 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,130 psi | 90% | 2949 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,636 psi | 86% | 2999 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 84% | 56,855 psi | 89% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,811 psi | 89% | 2979 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,998 psi | 86% | 3051 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,439 psi | 68% | 2897 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,130 psi | 88% | 2999 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,578 psi | 86% | 2992 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,969 psi | 86% | 3058 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,360 psi | 55% | 2805 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% | 48,965 psi | 77% | 2789 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,592 psi | 84% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,597 psi | 65% | 2707 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,311 psi | 74% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,688 psi | 75% | 2789 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 39,363 psi | 62% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 35,607 psi | 56% | 2677 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 45,121 psi | 71% | 2818 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 38,290 psi | 60% | 2657 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,210 psi | 74% | 2828 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 47,674 psi | 75% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | 56.5 gr | 80% | 41,191 psi | 65% | 2848 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,971 psi | 60% | 2680 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,843 psi | 64% | 2749 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,694 psi | 56% | 2687 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,895 psi | 52% | 2644 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,821 psi | 48% | 2579 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 38,435 psi | 60% | 2841 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,338 psi | 69% | 2818 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 37,768 psi | 59% | 2687 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 46,673 psi | 73% | 2822 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,892 psi | 77% | 2818 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,267 psi | 73% | 2851 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,053 psi | 80% | 3002 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 80% | 50,009 psi | 78% | 2867 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,638 psi | 61% | 2690 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 88% | 44,686 psi | 70% | 2871 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 96% | 52,040 psi | 82% | 2956 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 45,556 psi | 71% | 2831 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,676 psi | 48% | 2523 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,247 psi | 62% | 2749 fps | 98.7% |
| Hodgdon Superformance | 67.6 gr | 92% | 46,746 psi | 73% | 2930 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 42% | 1644 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,567 psi | 64% | 2717 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 41,394 psi | 65% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,681 psi | 59% | 2638 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 86% | 45,034 psi | 71% | 2762 fps | 95.2% |
| IMR 4350 | <<locked>> | 94% | 46,847 psi | 73% | 2844 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 45,600 psi | 71% | 2802 fps | 95.2% |
| IMR 4831 | <<locked>> | 90% | 35,273 psi | 55% | 2654 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 41,829 psi | 66% | 2782 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 47,210 psi | 74% | 2828 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 53,722 psi | 84% | 2920 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,353 psi | 70% | 2799 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,150 psi | 71% | 2756 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 40,306 psi | 63% | 2703 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,784 psi | 62% | 2687 fps | 95.2% |
| Lovex S070 | <<locked>> | 92% | 45,701 psi | 72% | 2831 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 44,121 psi | 69% | 2769 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 44,454 psi | 70% | 2776 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,205 psi | 63% | 2736 fps | 98.1% |
| Norma 204 | <<locked>> | 98% | 53,606 psi | 84% | 3005 fps | 95.3% |
| Norma URP | <<locked>> | 86% | 35,882 psi | 56% | 2677 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,856 psi | 62% | 2753 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 42,540 psi | 67% | 2835 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 47,036 psi | 74% | 2831 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,644 psi | 73% | 2851 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,995 psi | 80% | 2881 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 42% | 1683 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,794 psi | 83% | 2910 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 44,454 psi | 70% | 2785 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,960 psi | 67% | 2854 fps | 98.2% |
| ReloadSwiss RS 60 | 55.6 gr | 80% | 34,998 psi | 55% | 2713 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,826 psi | 59% | 2753 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 40,553 psi | 64% | 2825 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 48,095 psi | 75% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,090 psi | 66% | 2720 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 35,462 psi | 56% | 2628 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 46,673 psi | 73% | 2822 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,784 psi | 62% | 2687 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,353 psi | 70% | 2799 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,306 psi | 63% | 2703 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 45,701 psi | 72% | 2831 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,405 psi | 57% | 2677 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,614 psi | 71% | 2805 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,569 psi | 68% | 2782 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,484 psi | 71% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,884 psi | 59% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 44,904 psi | 70% | 2746 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 51,097 psi | 80% | 2910 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,034 psi | 71% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,121 psi | 71% | 2802 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 36,230 psi | 57% | 2635 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 28,094 psi | 44% | 2507 fps | 95.7% |
| Unknown powder | <<locked>> | 86% | 39,030 psi | 61% | 2740 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 50,227 psi | 79% | 2772 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,888 psi | 67% | 2667 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,524 psi | 65% | 2703 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,684 psi | 65% | 2703 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,980 psi | 49% | 2484 fps | 97.2% |
| Vihtavuori N160 | <<locked>> | 84% | 36,535 psi | 57% | 2657 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 49,763 psi | 78% | 2884 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,307 psi | 65% | 2723 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 37,101 psi | 58% | 2703 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 33,301 psi | 52% | 2664 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,618 psi | 48% | 2484 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 50,720 psi | 79% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 44,686 psi | 70% | 2871 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 31,111 psi | 49% | 2667 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 | Berger VLD Target. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,146 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 155.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 | 155gr | Berger VLD Target 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.