Load Specifications
Load data in caliber .300 WSM with .308 | 171gr | Peregrine VRG-2 bullet and 101 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-17 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.
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>> | 82% | 55,869 psi | 88% | 2766 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,636 psi | 86% | 2789 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,839 psi | 86% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,955 psi | 86% | 2812 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,978 psi | 74% | 2779 fps | 98.1% |
| Accurate 4064 | <<locked>> | 88% | 56,507 psi | 89% | 2858 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,797 psi | 89% | 2953 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,927 psi | 88% | 2884 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,043 psi | 89% | 2887 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,636 psi | 86% | 2936 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,868 psi | 86% | 2835 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,434 psi | 88% | 2805 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,115 psi | 88% | 3012 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,537 psi | 90% | 2910 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,476 psi | 85% | 2881 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,508 psi | 90% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,143 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,461 psi | 84% | 2920 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,251 psi | 69% | 2802 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,044 psi | 61% | 2707 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,285 psi | 79% | 2986 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,999 psi | 88% | 2904 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,737 psi | 86% | 2877 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,447 psi | 85% | 2851 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,173 psi | 88% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,392 psi | 90% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,564 psi | 87% | 2894 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 57,232 psi | 90% | 2976 fps | 99% |
| Hodgdon H4350 | <<locked>> | 96% | 56,666 psi | 89% | 2927 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 84% | 56,536 psi | 89% | 2894 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,725 psi | 90% | 2930 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,927 psi | 88% | 2927 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,014 psi | 88% | 2989 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,897 psi | 56% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,883 psi | 88% | 2874 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,637 psi | 87% | 2854 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,840 psi | 88% | 2861 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,969 psi | 86% | 2835 fps | 98.6% |
| IMR 4350 | <<locked>> | 96% | 54,984 psi | 86% | 2881 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,419 psi | 87% | 2874 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 2900 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 55,898 psi | 88% | 2910 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,868 psi | 86% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,289 psi | 88% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,201 psi | 87% | 2812 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,536 psi | 89% | 2864 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,130 psi | 88% | 2881 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 57,188 psi | 90% | 2917 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,972 psi | 61% | 2625 fps | 96.2% |
| Norma 201 | <<locked>> | 84% | 54,723 psi | 86% | 2828 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,376 psi | 87% | 2828 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,363 psi | 90% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,767 psi | 87% | 2933 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 49,850 psi | 78% | 2940 fps | 97.9% |
| Norma URP | <<locked>> | 96% | 55,579 psi | 87% | 2940 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 54,317 psi | 85% | 2894 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,230 psi | 85% | 2936 fps | 99.2% |
| Ramshot TAC | <<locked>> | 82% | 54,853 psi | 86% | 2854 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,897 psi | 86% | 2871 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,593 psi | 57% | 1814 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,651 psi | 87% | 2874 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,187 psi | 86% | 2949 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,853 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,507 psi | 89% | 2976 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,622 psi | 87% | 3009 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,608 psi | 87% | 2808 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,332 psi | 87% | 2828 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,853 psi | 86% | 2871 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2907 fps | 96.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,489 psi | 82% | 2904 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 54,447 psi | 85% | 2851 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,130 psi | 88% | 2881 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,289 psi | 88% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,536 psi | 89% | 2864 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,159 psi | 88% | 2907 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,420 psi | 88% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,406 psi | 90% | 2890 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,476 psi | 85% | 2858 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,796 psi | 87% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,536 psi | 89% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,115 psi | 88% | 2831 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,995 psi | 80% | 2887 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 55,463 psi | 87% | 2762 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,072 psi | 89% | 2877 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,940 psi | 86% | 2867 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,085 psi | 85% | 2940 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,374 psi | 84% | 2884 fps | 97.9% |
| Unknown powder | <<locked>> | 94% | 56,318 psi | 88% | 2943 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 57,696 psi | 90% | 2749 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,666 psi | 87% | 2740 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,317 psi | 85% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,274 psi | 87% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,304 psi | 88% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,101 psi | 89% | 2917 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 86% | 54,766 psi | 86% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,174 psi | 90% | 2963 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2884 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,157 psi | 85% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,232 psi | 90% | 2976 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,784 psi | 62% | 2835 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 2907 fps | 97.3% |
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% | 52,460 psi | 82% | 2720 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,701 psi | 70% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,271 psi | 80% | 2795 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 42,061 psi | 66% | 2589 fps | 95% |
| Accurate 3100 | <<locked>> | 92% | 35,737 psi | 56% | 2556 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 43,671 psi | 68% | 2661 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,605 psi | 51% | 2497 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 49,327 psi | 77% | 2779 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 41,930 psi | 66% | 2628 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 47,761 psi | 75% | 2815 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,430 psi | 81% | 2782 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,605 psi | 82% | 2756 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,600 psi | 71% | 2831 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,974 psi | 66% | 2654 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,962 psi | 70% | 2720 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,605 psi | 51% | 2510 fps | 95.9% |
| Alliant Reloder-17 | 57.1 gr | 80% | 36,535 psi | 57% | 2638 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,065 psi | 74% | 2805 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,485 psi | 45% | 2418 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,579 psi | 57% | 2648 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,837 psi | 51% | 2598 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,008 psi | 77% | 2792 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 41,945 psi | 66% | 2661 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,496 psi | 67% | 2635 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,982 psi | 83% | 2762 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,038 psi | 78% | 2799 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,554 psi | 67% | 2667 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 82% | 40,582 psi | 64% | 2677 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 44,121 psi | 69% | 2707 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,879 psi | 78% | 2792 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,994 psi | 47% | 2408 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,627 psi | 67% | 2707 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 42,061 psi | 66% | 2736 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 42% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,410 psi | 68% | 2664 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 46,079 psi | 72% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,191 psi | 65% | 2608 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,698 psi | 64% | 2572 fps | 95.5% |
| IMR 4350 | <<locked>> | 88% | 42,830 psi | 67% | 2664 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,567 psi | 64% | 2602 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 30,618 psi | 48% | 2428 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 46,108 psi | 72% | 2749 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,430 psi | 81% | 2782 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,226 psi | 77% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,762 psi | 76% | 2710 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,121 psi | 69% | 2664 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,303 psi | 57% | 2507 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 39,218 psi | 61% | 2592 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 36,463 psi | 57% | 2572 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 48,254 psi | 76% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,747 psi | 76% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,338 psi | 69% | 2707 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 48,718 psi | 76% | 2815 fps | 95.7% |
| Norma MRP | <<locked>> | 94% | 40,480 psi | 63% | 2753 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 32,808 psi | 51% | 2497 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 44,353 psi | 70% | 2726 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 36,477 psi | 57% | 2592 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 51,488 psi | 81% | 2802 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,198 psi | 80% | 2815 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,238 psi | 43% | 1621 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,801 psi | 67% | 2648 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,124 psi | 75% | 2835 fps | 99.7% |
| ReloadSwiss RS 60 | 57.1 gr | 80% | 38,899 psi | 61% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,300 psi | 51% | 2510 fps | 95.2% |
| ReloadSwiss RS 70 | 59.4 gr | 82% | 34,272 psi | 54% | 2572 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 52,373 psi | 82% | 2759 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,079 psi | 72% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,436 psi | 62% | 2605 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 98% | 52,794 psi | 83% | 2848 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 96% | 45,919 psi | 72% | 2789 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 42,496 psi | 67% | 2635 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,303 psi | 57% | 2507 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,226 psi | 77% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,121 psi | 69% | 2664 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 38,218 psi | 60% | 2575 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,538 psi | 64% | 2657 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,096 psi | 79% | 2776 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,892 psi | 75% | 2749 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,516 psi | 78% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,539 psi | 65% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 40,596 psi | 64% | 2562 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,498 psi | 70% | 2769 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 49,008 psi | 77% | 2667 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,879 psi | 78% | 2769 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,045 psi | 63% | 2608 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 29,443 psi | 46% | 2451 fps | 97.9% |
| Somchem S385 | <<locked>> | 94% | 43,613 psi | 68% | 2713 fps | 95.7% |
| Unknown powder | <<locked>> | 80% | 35,563 psi | 56% | 2552 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 54,534 psi | 85% | 2710 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,717 psi | 73% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,005 psi | 71% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,774 psi | 72% | 2657 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,229 psi | 54% | 2457 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 35,520 psi | 56% | 2530 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 80% | 45,281 psi | 71% | 2677 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,143 psi | 57% | 2572 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 86% | 31,096 psi | 49% | 2500 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,765 psi | 53% | 2477 fps | 98.2% |
| Winchester 760 | <<locked>> | 82% | 40,582 psi | 64% | 2677 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,847 psi | 42% | 2441 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,240 psi | 76% | 2789 fps | 95.7% |
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 | 171gr | Peregrine VRG-2. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,768 fps to 3,012 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 56–90 %, leaving at least 10 % headroom. The 171.0 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, ADI AR 2213 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-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 171gr | Peregrine VRG-2 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Bofors RP15, 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.