Load Specifications
Bullet Manufacturer:Prvi Partizan
Bullet Weight:170 gr
Bullet Diameter:0.311"
Bullet Length:<<locked>>
Caliber:.300 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:14.0
Load data in caliber .300 WSM with .311 | 170gr | Prvi Partizan FMJ BT bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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% | 55,796 psi | 87% | 2759 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,129 psi | 86% | 2789 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,766 psi | 86% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,752 psi | 86% | 2802 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,643 psi | 72% | 2753 fps | 97.7% |
| Accurate 4064 | <<locked>> | 88% | 55,245 psi | 87% | 2841 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,376 psi | 87% | 2933 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 54,998 psi | 86% | 2867 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,970 psi | 88% | 2871 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,316 psi | 84% | 2907 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,290 psi | 90% | 2867 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,129 psi | 86% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,679 psi | 86% | 2989 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,362 psi | 88% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,710 psi | 89% | 2913 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,188 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,653 psi | 90% | 3022 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,098 psi | 82% | 2894 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,221 psi | 68% | 2782 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,805 psi | 76% | 2959 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,694 psi | 86% | 2884 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 57,116 psi | 90% | 2907 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,898 psi | 89% | 2887 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,201 psi | 87% | 2795 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,942 psi | 89% | 2897 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 57,087 psi | 89% | 2841 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,201 psi | 85% | 2867 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 55,637 psi | 87% | 2949 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 96% | 56,275 psi | 88% | 2913 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 55,550 psi | 87% | 2877 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,362 psi | 88% | 2913 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,376 psi | 87% | 2913 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,418 psi | 85% | 2963 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 56% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,521 psi | 87% | 2861 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,447 psi | 85% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,650 psi | 86% | 2841 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,305 psi | 90% | 2864 fps | 98.7% |
| IMR 4350 | <<locked>> | 98% | 57,232 psi | 90% | 2910 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,288 psi | 87% | 2864 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2881 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 54,679 psi | 86% | 2890 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,290 psi | 90% | 2867 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,998 psi | 86% | 2841 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,653 psi | 90% | 2844 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,376 psi | 87% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,926 psi | 86% | 2858 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 55,956 psi | 88% | 2894 fps | 98.7% |
| Norma 201 | <<locked>> | 86% | 57,232 psi | 90% | 2861 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,360 psi | 85% | 2812 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,927 psi | 88% | 2900 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,302 psi | 85% | 2904 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 48,385 psi | 76% | 2910 fps | 97.3% |
| Norma URP | <<locked>> | 96% | 54,230 psi | 85% | 2917 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 56,898 psi | 89% | 2930 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,434 psi | 88% | 2969 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 57,377 psi | 90% | 2890 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,348 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 57% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,404 psi | 85% | 2851 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,740 psi | 90% | 2986 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,290 psi | 90% | 3018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,897 psi | 86% | 2953 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,012 psi | 85% | 2979 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 54,621 psi | 86% | 2792 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,566 psi | 90% | 2858 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,927 psi | 89% | 2900 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2877 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 56,898 psi | 89% | 2887 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,926 psi | 86% | 2858 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,998 psi | 86% | 2841 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,376 psi | 87% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,956 psi | 88% | 2894 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,056 psi | 86% | 2910 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,057 psi | 88% | 2867 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,942 psi | 89% | 2890 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,795 psi | 86% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,361 psi | 87% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,984 psi | 86% | 2812 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,517 psi | 79% | 2871 fps | 96.3% |
| Somchem S335 | <<locked>> | 84% | 54,534 psi | 85% | 2746 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,680 psi | 87% | 2854 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,217 psi | 90% | 2897 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,289 psi | 88% | 2972 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,735 psi | 81% | 2854 fps | 97.4% |
| Unknown powder | <<locked>> | 94% | 54,940 psi | 86% | 2920 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 82% | 56,811 psi | 89% | 2736 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,882 psi | 86% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,244 psi | 85% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,508 psi | 90% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,955 psi | 86% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,521 psi | 87% | 2894 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 56,768 psi | 89% | 2867 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,261 psi | 90% | 2858 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,883 psi | 88% | 2943 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,906 psi | 75% | 2858 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,550 psi | 89% | 2887 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,637 psi | 87% | 2949 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2808 fps | 99.9% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,027 psi | 85% | 2877 fps | 96.7% |
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% | 52,417 psi | 82% | 2713 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,382 psi | 71% | 2648 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,155 psi | 80% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 44,947 psi | 70% | 2635 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 37,115 psi | 58% | 2585 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 42,946 psi | 67% | 2648 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,807 psi | 50% | 2474 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 48,385 psi | 76% | 2759 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,263 psi | 65% | 2615 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 98% | 49,763 psi | 78% | 2848 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,473 psi | 79% | 2766 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,619 psi | 81% | 2743 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,483 psi | 70% | 2805 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,046 psi | 64% | 2635 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,005 psi | 69% | 2700 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,879 psi | 50% | 2487 fps | 95.2% |
| Alliant Reloder-17 | 55.8 gr | 80% | 35,650 psi | 56% | 2615 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,994 psi | 77% | 2841 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,934 psi | 44% | 2398 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,272 psi | 54% | 2635 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,935 psi | 75% | 2772 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 41,046 psi | 64% | 2644 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 44,222 psi | 69% | 2667 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,996 psi | 81% | 2746 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,879 psi | 78% | 2789 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 53,838 psi | 84% | 2795 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,742 psi | 65% | 2648 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 84% | 42,380 psi | 66% | 2713 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 90% | 46,746 psi | 73% | 2753 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 48,863 psi | 77% | 2772 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,428 psi | 46% | 2388 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,612 psi | 67% | 2700 fps | 99.7% |
| Hodgdon Superformance | 64.9 gr | 88% | 43,976 psi | 69% | 2772 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 42% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,482 psi | 68% | 2661 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 44,889 psi | 70% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,466 psi | 63% | 2592 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,074 psi | 63% | 2556 fps | 95% |
| IMR 4350 | <<locked>> | 90% | 44,585 psi | 70% | 2697 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,596 psi | 64% | 2592 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 31,894 psi | 50% | 2461 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 45,107 psi | 71% | 2730 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 50,473 psi | 79% | 2766 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,008 psi | 75% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,080 psi | 75% | 2694 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,395 psi | 68% | 2648 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,723 psi | 56% | 2493 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 40,959 psi | 64% | 2628 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,529 psi | 74% | 2713 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,747 psi | 75% | 2713 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,424 psi | 68% | 2687 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 47,587 psi | 75% | 2789 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 42,177 psi | 66% | 2785 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 31,995 psi | 50% | 2474 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 43,265 psi | 68% | 2707 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 38,087 psi | 60% | 2628 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 50,473 psi | 79% | 2779 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,328 psi | 79% | 2799 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 43% | 1614 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,018 psi | 66% | 2631 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,036 psi | 74% | 2815 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,927 psi | 59% | 2677 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,866 psi | 53% | 2549 fps | 95.6% |
| ReloadSwiss RS 70 | 59.5 gr | 84% | 35,853 psi | 56% | 2608 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,590 psi | 81% | 2746 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,165 psi | 71% | 2664 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,551 psi | 60% | 2585 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 98% | 47,776 psi | 75% | 2822 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 86% | 44,222 psi | 69% | 2667 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,723 psi | 56% | 2493 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,008 psi | 75% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,395 psi | 68% | 2648 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 40,959 psi | 64% | 2628 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,682 psi | 62% | 2641 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,052 psi | 77% | 2756 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,992 psi | 74% | 2733 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,486 psi | 76% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,625 psi | 64% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,322 psi | 66% | 2592 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,311 psi | 74% | 2815 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 48,327 psi | 76% | 2657 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,820 psi | 77% | 2753 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,363 psi | 62% | 2592 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 28,732 psi | 45% | 2428 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 42,554 psi | 67% | 2690 fps | 95.1% |
| Unknown powder | <<locked>> | 80% | 34,737 psi | 54% | 2533 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 53,403 psi | 84% | 2694 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,847 psi | 72% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,875 psi | 70% | 2638 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,831 psi | 70% | 2641 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,576 psi | 53% | 2441 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 80% | 34,737 psi | 54% | 2510 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 80% | 53,272 psi | 83% | 2815 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,440 psi | 70% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,375 psi | 55% | 2552 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 86% | 30,197 psi | 47% | 2477 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,098 psi | 52% | 2457 fps | 97.8% |
| Winchester 760 | <<locked>> | 84% | 42,380 psi | 66% | 2713 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,963 psi | 44% | 2477 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,804 psi | 73% | 2759 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 100 powders for .300 WSM loaded with the .311 | 170gr | Prvi Partizan FMJ BT. Alliant Reloder-17 delivers the highest muzzle velocity at 3,022 fps; across all powders the maximum-charge window runs from 1,765 fps to 3,022 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 0.311" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .311 | 170gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.