Load Specifications
Load data in caliber .300 WSM with .308 | 170gr | Norma Tipstrike 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 60, ReloadSwiss RS 70 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 2015 | <<locked>> | 82% | 54,708 psi | 86% | 2740 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,392 psi | 90% | 2812 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 57,348 psi | 90% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,334 psi | 90% | 2828 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,498 psi | 70% | 2726 fps | 97.3% |
| Accurate 4064 | <<locked>> | 90% | 57,508 psi | 90% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,983 psi | 85% | 2907 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 57,246 psi | 90% | 2894 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,868 psi | 86% | 2844 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,982 psi | 81% | 2877 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,115 psi | 88% | 2841 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,667 psi | 90% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,479 psi | 90% | 3025 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,187 psi | 86% | 2871 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,825 psi | 87% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,897 psi | 86% | 2959 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,376 psi | 88% | 2999 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,053 psi | 80% | 2867 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,221 psi | 66% | 2756 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,514 psi | 74% | 2930 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,334 psi | 90% | 2913 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 55,912 psi | 88% | 2887 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,695 psi | 87% | 2858 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,711 psi | 90% | 2822 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,811 psi | 87% | 2874 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,289 psi | 88% | 2825 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,666 psi | 89% | 2900 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 54,389 psi | 85% | 2923 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 96% | 55,013 psi | 86% | 2887 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 84% | 54,360 psi | 85% | 2854 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2884 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 54,215 psi | 85% | 2890 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 57,305 psi | 90% | 2999 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,868 psi | 56% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,607 psi | 86% | 2841 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,666 psi | 89% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,000 psi | 89% | 2867 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,275 psi | 88% | 2841 fps | 98.4% |
| IMR 4350 | <<locked>> | 98% | 56,101 psi | 88% | 2884 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,493 psi | 90% | 2887 fps | 98.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 2854 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 57,203 psi | 90% | 2923 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 56,115 psi | 88% | 2841 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,624 psi | 90% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,536 psi | 89% | 2818 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 54,418 psi | 85% | 2825 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,116 psi | 90% | 2884 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 54,752 psi | 86% | 2867 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 55,985 psi | 88% | 2838 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,579 psi | 89% | 2838 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,042 psi | 86% | 2881 fps | 100% |
| Norma 204 | <<locked>> | 98% | 57,101 psi | 89% | 2940 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 47,166 psi | 74% | 2881 fps | 96.8% |
| Norma URP | <<locked>> | 98% | 56,449 psi | 88% | 2946 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,521 psi | 87% | 2904 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,303 psi | 87% | 2943 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 56,420 psi | 88% | 2867 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,275 psi | 88% | 2884 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,855 psi | 89% | 2844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,347 psi | 57% | 1795 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,855 psi | 89% | 2881 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,449 psi | 88% | 2959 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,941 psi | 88% | 2992 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 57,363 psi | 90% | 2982 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,492 psi | 89% | 3012 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,971 psi | 89% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,666 psi | 89% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,796 psi | 87% | 2877 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,850 psi | 78% | 2851 fps | 96% |
| Rottweil R 907 | <<locked>> | 94% | 55,695 psi | 87% | 2858 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,116 psi | 90% | 2884 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,624 psi | 90% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,418 psi | 85% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,752 psi | 86% | 2867 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,493 psi | 90% | 2940 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,969 psi | 86% | 2844 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,854 psi | 88% | 2867 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,348 psi | 90% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,447 psi | 85% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,450 psi | 90% | 2838 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2844 fps | 95.9% |
| Somchem S321 | <<locked>> | 82% | 57,580 psi | 90% | 2877 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,753 psi | 89% | 2769 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,636 psi | 86% | 2835 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,115 psi | 88% | 2877 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2943 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 2831 fps | 97% |
| Unknown powder | <<locked>> | 96% | 57,508 psi | 90% | 2953 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 56,028 psi | 88% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,058 psi | 89% | 2753 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,463 psi | 88% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,318 psi | 88% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,450 psi | 90% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,244 psi | 85% | 2867 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 55,782 psi | 87% | 2848 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,159 psi | 88% | 2835 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,607 psi | 86% | 2917 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,644 psi | 73% | 2831 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,259 psi | 87% | 2861 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,580 psi | 90% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,389 psi | 85% | 2923 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,753 psi | 59% | 2772 fps | 99.7% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,765 psi | 83% | 2851 fps | 96.2% |
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% | 51,561 psi | 81% | 2697 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,309 psi | 69% | 2625 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,183 psi | 79% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 44,092 psi | 69% | 2612 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 38,783 psi | 61% | 2615 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 41,930 psi | 66% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,170 psi | 52% | 2507 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 47,427 psi | 74% | 2736 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,393 psi | 63% | 2589 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 48,733 psi | 76% | 2818 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,516 psi | 78% | 2743 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,386 psi | 79% | 2720 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,453 psi | 68% | 2779 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,321 psi | 63% | 2615 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,091 psi | 68% | 2674 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,243 psi | 52% | 2516 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,925 psi | 55% | 2589 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,921 psi | 75% | 2812 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,008 psi | 45% | 2428 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,810 psi | 56% | 2671 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,876 psi | 73% | 2746 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 40,103 psi | 63% | 2618 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 43,439 psi | 68% | 2641 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,082 psi | 80% | 2726 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,733 psi | 76% | 2769 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 52,765 psi | 83% | 2776 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,886 psi | 64% | 2625 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 84% | 41,394 psi | 65% | 2687 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 45,788 psi | 72% | 2726 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 47,921 psi | 75% | 2749 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,703 psi | 45% | 2365 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,684 psi | 65% | 2677 fps | 99.6% |
| Hodgdon Superformance | 63.6 gr | 88% | 43,018 psi | 67% | 2743 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 42% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,583 psi | 67% | 2638 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 43,976 psi | 69% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,566 psi | 62% | 2566 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 82% | 41,843 psi | 66% | 2585 fps | 95.4% |
| IMR 4350 | <<locked>> | 90% | 43,671 psi | 68% | 2671 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,424 psi | 66% | 2625 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 33,243 psi | 52% | 2493 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 44,179 psi | 69% | 2707 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 49,516 psi | 78% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,007 psi | 74% | 2717 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,152 psi | 74% | 2671 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,438 psi | 67% | 2625 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,231 psi | 58% | 2523 fps | 95.5% |
| Lovex S070 | <<locked>> | 86% | 39,958 psi | 63% | 2598 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 46,528 psi | 73% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,963 psi | 74% | 2694 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,467 psi | 67% | 2664 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 49,864 psi | 78% | 2822 fps | 95.5% |
| Norma MRP | <<locked>> | 96% | 41,191 psi | 65% | 2756 fps | 95% |
| Norma URP | <<locked>> | 82% | 33,547 psi | 53% | 2510 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 42,206 psi | 66% | 2680 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 39,668 psi | 62% | 2657 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 49,487 psi | 78% | 2756 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,255 psi | 77% | 2776 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,548 psi | 84% | 2795 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,050 psi | 42% | 1604 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,046 psi | 64% | 2602 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,759 psi | 72% | 2785 fps | 99.3% |
| ReloadSwiss RS 60 | 54.7 gr | 80% | 37,144 psi | 58% | 2654 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,938 psi | 52% | 2520 fps | 95.1% |
| ReloadSwiss RS 70 | 58.3 gr | 84% | 35,099 psi | 55% | 2582 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 50,517 psi | 79% | 2723 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,396 psi | 70% | 2641 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,840 psi | 59% | 2566 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 46,644 psi | 73% | 2792 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 43,439 psi | 68% | 2641 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,231 psi | 58% | 2523 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,007 psi | 74% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,438 psi | 67% | 2625 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,958 psi | 63% | 2598 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,653 psi | 61% | 2612 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,979 psi | 75% | 2730 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,934 psi | 72% | 2707 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,718 psi | 75% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,900 psi | 63% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,597 psi | 65% | 2572 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 46,209 psi | 72% | 2789 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 53,838 psi | 84% | 2825 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,398 psi | 74% | 2635 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,747 psi | 75% | 2726 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,450 psi | 60% | 2569 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 28,181 psi | 44% | 2408 fps | 97% |
| Somchem S385 | <<locked>> | 96% | 44,251 psi | 69% | 2717 fps | 95.5% |
| Unknown powder | <<locked>> | 82% | 36,230 psi | 57% | 2562 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 52,576 psi | 82% | 2674 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,020 psi | 71% | 2579 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,048 psi | 69% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,888 psi | 69% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,909 psi | 52% | 2421 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 80% | 33,953 psi | 53% | 2487 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 52,301 psi | 82% | 2795 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,540 psi | 68% | 2641 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,577 psi | 54% | 2530 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 31,328 psi | 49% | 2503 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,343 psi | 51% | 2431 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 53,766 psi | 84% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 41,394 psi | 65% | 2687 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 92% | 29,095 psi | 46% | 2510 fps | 96.2% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,081 psi | 77% | 2789 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 118 powders for .300 WSM loaded with the .308 | 170gr | Norma Tipstrike. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,755 fps to 3,025 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 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 170.0 gr projectile in 0.308" calls for a 1:12.5 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 60, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for .300 WSM with the .308 | 170gr | Norma Tipstrike they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, 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.