Load Specifications
Load data in caliber .300 WSM with .308 | 170gr | Remington SP Core-Lokt bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 54,578 psi | 86% | 2795 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,392 psi | 90% | 2864 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,095 psi | 77% | 2828 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 54,882 psi | 86% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,129 psi | 86% | 2946 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 57,696 psi | 90% | 2927 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,347 psi | 87% | 2877 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 2982 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,405 psi | 88% | 2871 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,099 psi | 85% | 2995 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,854 psi | 88% | 2900 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,202 psi | 88% | 2923 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,028 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,479 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 2969 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,023 psi | 77% | 2907 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,166 psi | 72% | 2851 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,350 psi | 63% | 2756 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,707 psi | 83% | 3041 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,099 psi | 85% | 2890 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 56,768 psi | 89% | 2920 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,023 psi | 77% | 2907 fps | 96.4% |
| Bofors RP7 | <<locked>> | 92% | 56,188 psi | 88% | 2894 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,653 psi | 90% | 2848 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,173 psi | 88% | 2900 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,159 psi | 90% | 2933 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,216 psi | 87% | 2963 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 94% | 55,825 psi | 87% | 2930 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 82% | 54,810 psi | 86% | 2884 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,173 psi | 88% | 2923 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,955 psi | 86% | 2923 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,998 psi | 85% | 2972 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 57% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,839 psi | 86% | 2871 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,246 psi | 90% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,522 psi | 90% | 2900 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,449 psi | 88% | 2877 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 56,811 psi | 89% | 2923 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,404 psi | 85% | 2871 fps | 98.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 2946 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,682 psi | 90% | 2953 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 55,869 psi | 88% | 2907 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 82% | 56,405 psi | 88% | 2871 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,259 psi | 85% | 2844 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,637 psi | 89% | 2851 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,752 psi | 86% | 2854 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,346 psi | 85% | 2867 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 55,506 psi | 87% | 2907 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,741 psi | 64% | 2674 fps | 96.8% |
| Norma 201 | <<locked>> | 84% | 56,333 psi | 88% | 2867 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,942 psi | 89% | 2864 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,434 psi | 87% | 2910 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,143 psi | 85% | 2923 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 51,953 psi | 81% | 2992 fps | 98.4% |
| Norma URP | <<locked>> | 96% | 57,595 psi | 90% | 2982 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,101 psi | 88% | 2936 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,448 psi | 87% | 3015 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 96% | 56,318 psi | 88% | 2982 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,022 psi | 75% | 2861 fps | 96.7% |
| Ramshot TAC | <<locked>> | 82% | 56,507 psi | 89% | 2897 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,449 psi | 88% | 2910 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 57% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,334 psi | 90% | 2917 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,072 psi | 89% | 2992 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,956 psi | 89% | 3028 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,042 psi | 86% | 2969 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,566 psi | 90% | 3054 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,174 psi | 90% | 2844 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,898 psi | 89% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,608 psi | 89% | 2910 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,491 psi | 85% | 2894 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,563 psi | 86% | 2953 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 56,188 psi | 88% | 2894 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,346 psi | 85% | 2867 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,259 psi | 85% | 2844 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,752 psi | 86% | 2854 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,506 psi | 87% | 2907 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,621 psi | 86% | 2920 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,361 psi | 87% | 2877 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,057 psi | 88% | 2897 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,421 psi | 90% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,563 psi | 86% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,682 psi | 90% | 2871 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,056 psi | 85% | 2949 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 56,927 psi | 89% | 2795 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,042 psi | 86% | 2864 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,608 psi | 89% | 2907 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,260 psi | 88% | 2982 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,317 psi | 87% | 2933 fps | 98.3% |
| Unknown powder | <<locked>> | 92% | 54,723 psi | 86% | 2936 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 86% | 57,319 psi | 90% | 2779 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,101 psi | 89% | 2825 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,753 psi | 89% | 2835 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,766 psi | 86% | 2841 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,129 psi | 86% | 2904 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,050 psi | 72% | 2762 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 86% | 56,391 psi | 88% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,521 psi | 87% | 2953 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,503 psi | 81% | 2930 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,014 psi | 88% | 2894 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,216 psi | 87% | 2963 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,524 psi | 65% | 2890 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 2956 fps | 97.8% |
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 2495 | <<locked>> | 80% | 48,022 psi | 75% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,466 psi | 65% | 2585 fps | 95% |
| Accurate 3100 | <<locked>> | 92% | 37,362 psi | 59% | 2602 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,469 psi | 71% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,084 psi | 53% | 2543 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 80% | 50,923 psi | 80% | 2822 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,149 psi | 68% | 2667 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 46,296 psi | 73% | 2805 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,968 psi | 83% | 2822 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,021 psi | 74% | 2874 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,482 psi | 68% | 2697 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,456 psi | 73% | 2762 fps | 99.6% |
| Alliant Reloder-16 | 54.7 gr | 80% | 33,692 psi | 53% | 2552 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,840 psi | 59% | 2680 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,745 psi | 72% | 2799 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,876 psi | 72% | 2848 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,847 psi | 44% | 2411 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,592 psi | 56% | 2638 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,142 psi | 54% | 2648 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,343 psi | 79% | 2831 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,511 psi | 68% | 2703 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,876 psi | 72% | 2848 fps | 95.6% |
| Bofors RP7 | <<locked>> | 82% | 41,104 psi | 64% | 2621 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,215 psi | 85% | 2799 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,504 psi | 82% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,990 psi | 69% | 2710 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,247 psi | 62% | 2661 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 86% | 43,569 psi | 68% | 2707 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 51,445 psi | 81% | 2831 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,111 psi | 49% | 2451 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,078 psi | 71% | 2759 fps | 100% |
| Hodgdon Superformance | 65.4 gr | 84% | 40,538 psi | 64% | 2717 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 42% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,527 psi | 71% | 2713 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 47,500 psi | 74% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,511 psi | 67% | 2648 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,858 psi | 66% | 2615 fps | 96% |
| IMR 4350 | <<locked>> | 86% | 41,684 psi | 65% | 2657 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,030 psi | 63% | 2598 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 31,807 psi | 50% | 2470 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 47,645 psi | 75% | 2792 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,475 psi | 82% | 2851 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 52,968 psi | 83% | 2822 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,850 psi | 80% | 2799 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,038 psi | 78% | 2746 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,455 psi | 71% | 2703 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,637 psi | 59% | 2552 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 38,203 psi | 60% | 2582 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 35,781 psi | 56% | 2566 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 49,879 psi | 78% | 2769 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,386 psi | 79% | 2769 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,832 psi | 72% | 2749 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 47,282 psi | 74% | 2805 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 39,407 psi | 62% | 2740 fps | 95% |
| Norma URP | <<locked>> | 80% | 34,171 psi | 54% | 2543 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 45,701 psi | 72% | 2766 fps | 99.7% |
| Ramshot Grand | <<locked>> | 98% | 51,227 psi | 80% | 2943 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 84% | 37,811 psi | 59% | 2638 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 98% | 44,353 psi | 70% | 2792 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 52,968 psi | 83% | 2841 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,852 psi | 83% | 2858 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 43% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,092 psi | 69% | 2690 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,763 psi | 78% | 2877 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,248 psi | 63% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,794 psi | 53% | 2559 fps | 96% |
| ReloadSwiss RS 70 | 61.3 gr | 82% | 35,505 psi | 56% | 2618 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 53,954 psi | 85% | 2799 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,471 psi | 74% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,017 psi | 64% | 2651 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 51,314 psi | 80% | 2841 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 44,628 psi | 70% | 2779 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 41,104 psi | 64% | 2621 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,637 psi | 59% | 2552 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,850 psi | 80% | 2799 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,455 psi | 71% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,203 psi | 60% | 2582 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,930 psi | 66% | 2697 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,735 psi | 81% | 2822 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,313 psi | 77% | 2789 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,676 psi | 79% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,641 psi | 67% | 2572 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,233 psi | 61% | 2549 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,193 psi | 69% | 2772 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,560 psi | 79% | 2707 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,256 psi | 80% | 2808 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,553 psi | 65% | 2651 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,690 psi | 48% | 2497 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 42,482 psi | 67% | 2707 fps | 95.5% |
| Unknown powder | <<locked>> | 80% | 36,927 psi | 58% | 2598 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 80% | 47,935 psi | 75% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,326 psi | 74% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,123 psi | 74% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,476 psi | 56% | 2497 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 36,869 psi | 58% | 2572 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 98% | 43,105 psi | 68% | 2707 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 46,775 psi | 73% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,507 psi | 59% | 2615 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 84% | 30,313 psi | 48% | 2487 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,809 psi | 55% | 2513 fps | 98.6% |
| Winchester 760 | <<locked>> | 80% | 39,247 psi | 62% | 2661 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,978 psi | 44% | 2497 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,514 psi | 73% | 2772 fps | 95.4% |
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 114 powders for .300 WSM loaded with the .308 | 170gr | Remington SP Core-Lokt. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,054 fps. Accurate 3100 gives the best case fill at 100 %, and 114 of the 114 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.308" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. ReloadSwiss RS 70, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .300 WSM with the .308 | 170gr | Remington SP Core-Lokt they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H4831 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.