Load Specifications
Bullet Manufacturer:Prvi Partizan
Bullet Weight:170 gr
Bullet Diameter:0.308"
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:1:16.0
Load data in caliber .300 WSM with .308 | 170gr | Prvi Partizan FSP bullet and 105 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 2015 | <<locked>> | 82% | 57,609 psi | 90% | 2795 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,203 psi | 90% | 2825 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,884 psi | 89% | 2881 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,710 psi | 89% | 2844 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,138 psi | 75% | 2808 fps | 98.3% |
| Accurate 4064 | <<locked>> | 88% | 57,450 psi | 90% | 2877 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,012 psi | 85% | 2923 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 56,753 psi | 89% | 2907 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,462 psi | 85% | 2861 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,405 psi | 87% | 2959 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,477 psi | 87% | 2851 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,188 psi | 90% | 2822 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,130 psi | 90% | 3038 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,288 psi | 87% | 2956 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,940 psi | 86% | 2884 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,274 psi | 87% | 2907 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,969 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,376 psi | 88% | 3012 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2949 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,950 psi | 75% | 2881 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,281 psi | 71% | 2831 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,697 psi | 62% | 2733 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 3018 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,710 psi | 89% | 2923 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 55,579 psi | 87% | 2897 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,950 psi | 75% | 2881 fps | 96% |
| Bofors RP7 | <<locked>> | 92% | 55,390 psi | 87% | 2877 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,000 psi | 89% | 2835 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,274 psi | 87% | 2884 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,304 psi | 88% | 2917 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 54,172 psi | 85% | 2940 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 94% | 54,824 psi | 86% | 2907 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 57,348 psi | 90% | 2917 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,114 psi | 86% | 2904 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,609 psi | 90% | 2956 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,029 psi | 89% | 3015 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,085 psi | 57% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,508 psi | 90% | 2904 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,405 psi | 88% | 2874 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,594 psi | 89% | 2881 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,680 psi | 87% | 2858 fps | 98.7% |
| IMR 4350 | <<locked>> | 96% | 56,101 psi | 88% | 2907 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,101 psi | 89% | 2907 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,100 psi | 86% | 2923 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 56,724 psi | 89% | 2933 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,477 psi | 87% | 2851 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,174 psi | 90% | 2881 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,738 psi | 87% | 2831 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,334 psi | 90% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,811 psi | 89% | 2900 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 54,520 psi | 85% | 2887 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,856 psi | 62% | 2651 fps | 96.4% |
| Norma 201 | <<locked>> | 84% | 55,637 psi | 87% | 2854 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,217 psi | 88% | 2851 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,563 psi | 86% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,855 psi | 89% | 2959 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 50,836 psi | 80% | 2969 fps | 98.1% |
| Norma URP | <<locked>> | 96% | 56,521 psi | 89% | 2963 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,288 psi | 87% | 2917 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,157 psi | 85% | 2986 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 55,347 psi | 87% | 2963 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,891 psi | 73% | 2831 fps | 96.2% |
| Ramshot TAC | <<locked>> | 82% | 55,738 psi | 87% | 2877 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,593 psi | 87% | 2894 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 57% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,289 psi | 88% | 2897 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,101 psi | 88% | 2972 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,796 psi | 87% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 57,696 psi | 90% | 3002 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,391 psi | 88% | 3031 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 56,376 psi | 88% | 2828 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,231 psi | 88% | 2851 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,724 psi | 87% | 2894 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,232 psi | 90% | 2930 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 2930 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 55,390 psi | 87% | 2877 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,811 psi | 89% | 2900 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,174 psi | 90% | 2881 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,334 psi | 90% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,520 psi | 85% | 2887 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,363 psi | 90% | 2953 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,491 psi | 85% | 2858 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,187 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,695 psi | 89% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,290 psi | 90% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,029 psi | 89% | 2854 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,852 psi | 83% | 2923 fps | 97.1% |
| Somchem S335 | <<locked>> | 84% | 56,275 psi | 88% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,215 psi | 85% | 2848 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,724 psi | 87% | 2890 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,114 psi | 86% | 2963 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,157 psi | 85% | 2907 fps | 98.1% |
| Unknown powder | <<locked>> | 94% | 57,246 psi | 90% | 2969 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 86% | 56,565 psi | 89% | 2762 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,333 psi | 88% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,811 psi | 87% | 2818 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,276 psi | 90% | 2871 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,317 psi | 85% | 2887 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 86% | 55,521 psi | 87% | 2844 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,520 psi | 85% | 2933 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 2907 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,114 psi | 86% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,172 psi | 85% | 2940 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,640 psi | 64% | 2864 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,594 psi | 89% | 2933 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 2015 | <<locked>> | 80% | 54,230 psi | 85% | 2749 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,210 psi | 74% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,301 psi | 84% | 2828 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,642 psi | 68% | 2625 fps | 95.5% |
| Accurate 3100 | <<locked>> | 92% | 36,448 psi | 57% | 2579 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 44,686 psi | 70% | 2687 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,446 psi | 52% | 2523 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 80% | 50,169 psi | 79% | 2802 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,511 psi | 67% | 2651 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 48,733 psi | 76% | 2844 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,272 psi | 82% | 2805 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,650 psi | 84% | 2779 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,354 psi | 73% | 2854 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 45,440 psi | 71% | 2782 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,786 psi | 67% | 2680 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,774 psi | 72% | 2746 fps | 99.5% |
| Alliant Reloder-16 | 53.8 gr | 80% | 33,127 psi | 52% | 2533 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,246 psi | 58% | 2664 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,877 psi | 75% | 2831 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,846 psi | 70% | 2822 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,369 psi | 43% | 2392 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,099 psi | 55% | 2618 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,388 psi | 52% | 2621 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,734 psi | 78% | 2815 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,830 psi | 67% | 2687 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,846 psi | 70% | 2822 fps | 95.1% |
| Bofors RP7 | <<locked>> | 84% | 43,033 psi | 67% | 2657 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,534 psi | 84% | 2782 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,837 psi | 81% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,352 psi | 68% | 2694 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 82% | 41,278 psi | 65% | 2700 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 88% | 45,614 psi | 71% | 2743 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 50,734 psi | 80% | 2815 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,690 psi | 48% | 2434 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,382 psi | 70% | 2743 fps | 99.9% |
| Hodgdon Superformance | 65.9 gr | 86% | 42,830 psi | 67% | 2762 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 42% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,005 psi | 71% | 2700 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 46,847 psi | 73% | 2733 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,829 psi | 66% | 2628 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,249 psi | 65% | 2595 fps | 95.7% |
| IMR 4350 | <<locked>> | 88% | 43,671 psi | 68% | 2690 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,465 psi | 62% | 2582 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 31,198 psi | 49% | 2451 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 46,949 psi | 74% | 2776 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,272 psi | 82% | 2805 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,893 psi | 78% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,545 psi | 78% | 2733 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,962 psi | 70% | 2690 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,043 psi | 58% | 2533 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 39,958 psi | 63% | 2618 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 37,347 psi | 59% | 2598 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,153 psi | 77% | 2749 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,647 psi | 78% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,150 psi | 71% | 2733 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 46,325 psi | 73% | 2779 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 41,423 psi | 65% | 2782 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 33,547 psi | 53% | 2523 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 45,121 psi | 71% | 2749 fps | 99.6% |
| Ramshot Grand | <<locked>> | 98% | 50,212 psi | 79% | 2913 fps | 95% |
| Ramshot Hunter | <<locked>> | 84% | 37,130 psi | 58% | 2618 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 43,468 psi | 68% | 2766 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 52,228 psi | 82% | 2822 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,967 psi | 81% | 2838 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 43% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,526 psi | 68% | 2674 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,979 psi | 77% | 2858 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,610 psi | 62% | 2726 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,025 psi | 52% | 2536 fps | 95.5% |
| ReloadSwiss RS 70 | 60.3 gr | 82% | 34,882 psi | 55% | 2595 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 53,156 psi | 83% | 2782 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,789 psi | 73% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,277 psi | 63% | 2631 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 50,415 psi | 79% | 2822 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 46,746 psi | 73% | 2815 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 43,033 psi | 67% | 2657 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,043 psi | 58% | 2533 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,893 psi | 78% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,962 psi | 70% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,958 psi | 63% | 2618 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,307 psi | 65% | 2680 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,865 psi | 80% | 2802 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,660 psi | 76% | 2776 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,154 psi | 79% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,148 psi | 66% | 2559 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,118 psi | 64% | 2582 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,311 psi | 73% | 2808 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 49,864 psi | 78% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,647 psi | 79% | 2792 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,872 psi | 64% | 2635 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,124 psi | 47% | 2477 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 41,611 psi | 65% | 2684 fps | 95.1% |
| Unknown powder | <<locked>> | 80% | 36,289 psi | 57% | 2579 fps | 96.3% |
| Vihtavuori N133 | <<locked>> | 80% | 47,384 psi | 74% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,717 psi | 73% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,412 psi | 73% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,824 psi | 55% | 2480 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 36,274 psi | 57% | 2556 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 80% | 46,093 psi | 72% | 2700 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,869 psi | 58% | 2598 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 84% | 29,733 psi | 47% | 2470 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,374 psi | 54% | 2500 fps | 98.4% |
| Winchester 760 | <<locked>> | 82% | 41,278 psi | 65% | 2700 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,470 psi | 43% | 2470 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,716 psi | 72% | 2753 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 105 powders for .300 WSM loaded with the .308 | 170gr | Prvi Partizan FSP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,038 fps; across all powders the maximum-charge window runs from 1,785 fps to 3,038 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 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 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 | Prvi Partizan FSP 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.