Load Specifications
Load data in caliber .300 WSM with .308 | 180gr | Remington PSP 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.
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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 2495 | <<locked>> | 84% | 55,013 psi | 86% | 2710 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,740 psi | 90% | 2782 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2753 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 55,230 psi | 87% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,608 psi | 87% | 2864 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,621 psi | 86% | 2792 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,666 psi | 87% | 2795 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,811 psi | 89% | 2904 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,811 psi | 89% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,520 psi | 85% | 2913 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,072 psi | 88% | 2815 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,594 psi | 89% | 2841 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,188 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,722 psi | 84% | 2890 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 2887 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2831 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,572 psi | 73% | 2776 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,785 psi | 64% | 2690 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,026 psi | 83% | 2963 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,360 psi | 85% | 2808 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 57,145 psi | 90% | 2835 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 2831 fps | 96.9% |
| Bofors RP7 | <<locked>> | 92% | 56,579 psi | 89% | 2815 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,681 psi | 89% | 2818 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,566 psi | 90% | 2851 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,695 psi | 87% | 2884 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 94% | 56,086 psi | 88% | 2848 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 82% | 55,201 psi | 87% | 2802 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,463 psi | 88% | 2841 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,230 psi | 87% | 2835 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,375 psi | 85% | 2897 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,187 psi | 57% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,288 psi | 87% | 2789 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,288 psi | 85% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,447 psi | 85% | 2769 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,855 psi | 89% | 2795 fps | 99.1% |
| IMR 4350 | <<locked>> | 96% | 57,276 psi | 90% | 2848 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,694 psi | 86% | 2789 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 2864 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,418 psi | 85% | 2815 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2831 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 82% | 56,811 psi | 89% | 2789 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,578 psi | 86% | 2762 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,971 psi | 89% | 2766 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,230 psi | 87% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,766 psi | 86% | 2789 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 55,854 psi | 88% | 2828 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,176 psi | 65% | 2608 fps | 97.4% |
| Norma 201 | <<locked>> | 84% | 56,739 psi | 89% | 2785 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,406 psi | 90% | 2779 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,869 psi | 88% | 2828 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,447 psi | 85% | 2844 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 52,257 psi | 82% | 2913 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 54,317 psi | 85% | 2848 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,681 psi | 89% | 2854 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2936 fps | 97% |
| Ramshot Hunter | <<locked>> | 96% | 56,507 psi | 89% | 2900 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,312 psi | 76% | 2789 fps | 97.2% |
| Ramshot TAC | <<locked>> | 82% | 56,840 psi | 89% | 2815 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,000 psi | 89% | 2828 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,580 psi | 90% | 2835 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,609 psi | 90% | 2910 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,174 psi | 90% | 2940 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,230 psi | 87% | 2887 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,983 psi | 85% | 2913 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 57,595 psi | 90% | 2759 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,377 psi | 90% | 2785 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,985 psi | 89% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,795 psi | 86% | 2815 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 2874 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 92% | 56,579 psi | 89% | 2815 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,766 psi | 86% | 2789 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,578 psi | 86% | 2762 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,230 psi | 87% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,854 psi | 88% | 2828 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,129 psi | 86% | 2838 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,622 psi | 87% | 2795 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,507 psi | 89% | 2815 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,638 psi | 90% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,013 psi | 86% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,607 psi | 86% | 2743 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,317 psi | 85% | 2867 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 57,334 psi | 90% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,332 psi | 87% | 2782 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,855 psi | 89% | 2822 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,782 psi | 89% | 2812 fps | 96.1% |
| Somchem S365 | <<locked>> | 98% | 56,724 psi | 89% | 2900 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 2851 fps | 98.7% |
| Unknown powder | <<locked>> | 92% | 54,998 psi | 86% | 2851 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 86% | 57,522 psi | 90% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,508 psi | 90% | 2740 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,058 psi | 89% | 2749 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,114 psi | 86% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,506 psi | 87% | 2825 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,267 psi | 73% | 2687 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 86% | 56,826 psi | 89% | 2776 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,970 psi | 88% | 2874 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,924 psi | 81% | 2851 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,304 psi | 88% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,695 psi | 87% | 2884 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,756 psi | 65% | 2818 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,099 psi | 85% | 2822 fps | 97.5% |
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% | 48,225 psi | 76% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,858 psi | 66% | 2516 fps | 95.6% |
| Accurate 3100 | <<locked>> | 90% | 35,230 psi | 55% | 2484 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 45,643 psi | 72% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,330 psi | 54% | 2477 fps | 97% |
| ADI AR 2206H | <<locked>> | 80% | 51,169 psi | 80% | 2740 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,453 psi | 68% | 2592 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 43,787 psi | 69% | 2677 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,258 psi | 83% | 2736 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,369 psi | 74% | 2795 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,671 psi | 68% | 2618 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,731 psi | 73% | 2684 fps | 99.8% |
| Alliant Reloder-16 | 52.7 gr | 80% | 33,968 psi | 53% | 2487 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,261 psi | 60% | 2615 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,149 psi | 68% | 2667 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,134 psi | 68% | 2713 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,455 psi | 41% | 2300 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,707 psi | 53% | 2516 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,068 psi | 50% | 2520 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,749 psi | 80% | 2753 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 43,816 psi | 69% | 2628 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,134 psi | 68% | 2713 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 41,336 psi | 65% | 2549 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,852 psi | 83% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,353 psi | 70% | 2635 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 80% | 39,508 psi | 62% | 2592 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 86% | 43,830 psi | 69% | 2635 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 51,706 psi | 81% | 2749 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,372 psi | 49% | 2385 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,440 psi | 71% | 2684 fps | 100% |
| Hodgdon Superformance | 63 gr | 84% | 40,828 psi | 64% | 2648 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 42% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,832 psi | 72% | 2638 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 47,950 psi | 75% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,728 psi | 67% | 2572 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,105 psi | 66% | 2539 fps | 96.5% |
| IMR 4350 | <<locked>> | 84% | 39,349 psi | 62% | 2530 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,379 psi | 63% | 2530 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 30,139 psi | 47% | 2356 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 47,906 psi | 75% | 2713 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,823 psi | 83% | 2776 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 53,258 psi | 83% | 2736 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,300 psi | 80% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,328 psi | 79% | 2667 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,818 psi | 72% | 2625 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,782 psi | 59% | 2480 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 38,479 psi | 60% | 2513 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 33,866 psi | 53% | 2451 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,024 psi | 78% | 2684 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,560 psi | 79% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,079 psi | 72% | 2671 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,483 psi | 70% | 2671 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 39,653 psi | 62% | 2671 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 34,389 psi | 54% | 2474 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 80% | 46,050 psi | 72% | 2690 fps | 99.8% |
| Ramshot Grand | <<locked>> | 96% | 48,051 psi | 75% | 2805 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 82% | 35,708 psi | 56% | 2513 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 96% | 41,466 psi | 65% | 2657 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 53,127 psi | 83% | 2759 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,214 psi | 83% | 2776 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 43% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,512 psi | 70% | 2618 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,285 psi | 79% | 2799 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,683 psi | 64% | 2671 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,040 psi | 53% | 2490 fps | 96.6% |
| ReloadSwiss RS 70 | 57.6 gr | 80% | 33,402 psi | 52% | 2490 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 54,215 psi | 85% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,790 psi | 75% | 2641 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,191 psi | 65% | 2572 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 48,385 psi | 76% | 2710 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 42,221 psi | 66% | 2651 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 41,336 psi | 65% | 2549 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,782 psi | 59% | 2480 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,300 psi | 80% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,818 psi | 72% | 2625 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,479 psi | 60% | 2513 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,322 psi | 66% | 2625 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,866 psi | 81% | 2740 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,705 psi | 78% | 2713 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,111 psi | 80% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,033 psi | 67% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 36,956 psi | 58% | 2425 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,556 psi | 70% | 2700 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 50,705 psi | 79% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,619 psi | 81% | 2726 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,698 psi | 65% | 2575 fps | 99.7% |
| Somchem S361 | <<locked>> | 96% | 53,272 psi | 83% | 2759 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 30,922 psi | 48% | 2431 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 40,074 psi | 63% | 2579 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 37,188 psi | 58% | 2530 fps | 97.1% |
| Vihtavuori N133 | <<locked>> | 80% | 48,225 psi | 76% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,848 psi | 75% | 2608 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,297 psi | 74% | 2612 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,694 psi | 56% | 2428 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 37,173 psi | 58% | 2503 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 98% | 43,424 psi | 68% | 2635 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 47,050 psi | 74% | 2635 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,811 psi | 59% | 2546 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 82% | 28,718 psi | 45% | 2372 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,099 psi | 55% | 2448 fps | 99% |
| Winchester 760 | <<locked>> | 80% | 39,508 psi | 62% | 2592 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,484 psi | 42% | 2379 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,598 psi | 68% | 2641 fps | 95% |
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 115 powders for .300 WSM loaded with the .308 | 180gr | Remington PSP Core-Lokt. Alliant Reloder-26 delivers the highest muzzle velocity at 2,963 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,963 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 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 180.0 gr projectile in 0.308" calls for a 1:15.0 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 | 180gr | Remington PSP Core-Lokt they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Bofors RP30 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.