Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:187 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:1:10.5
Load data in caliber .300 WSM with .308 | 187gr | Peregrine VLR5 (VLR-5) bullet and 107 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.
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% | 54,984 psi | 86% | 2605 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,435 psi | 90% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 57,696 psi | 90% | 2733 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,085 psi | 85% | 2657 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,963 psi | 72% | 2628 fps | 98.3% |
| Accurate 4064 | <<locked>> | 88% | 55,492 psi | 87% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,680 psi | 87% | 2792 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 55,245 psi | 87% | 2723 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,347 psi | 88% | 2726 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 2772 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,609 psi | 90% | 2720 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,550 psi | 87% | 2641 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,056 psi | 86% | 2844 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,623 psi | 89% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,188 psi | 90% | 2772 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,391 psi | 88% | 2841 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,157 psi | 85% | 2825 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 2762 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,166 psi | 72% | 2703 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,366 psi | 68% | 2651 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,072 psi | 60% | 2559 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 2828 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,129 psi | 86% | 2743 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 57,305 psi | 90% | 2762 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,166 psi | 72% | 2703 fps | 96% |
| Bofors RP7 | <<locked>> | 94% | 56,956 psi | 89% | 2743 fps | 98.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,695 psi | 87% | 2654 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,260 psi | 88% | 2743 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 57,508 psi | 90% | 2694 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,578 psi | 86% | 2733 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 56,086 psi | 88% | 2812 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 96% | 55,724 psi | 87% | 2766 fps | 98% |
| Hodgdon H4895 | <<locked>> | 84% | 55,883 psi | 88% | 2733 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2766 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,592 psi | 86% | 2759 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,781 psi | 86% | 2825 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 56% | 1657 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,114 psi | 86% | 2713 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,665 psi | 86% | 2690 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,042 psi | 86% | 2700 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,740 psi | 90% | 2726 fps | 99.1% |
| IMR 4350 | <<locked>> | 98% | 57,638 psi | 90% | 2772 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,665 psi | 86% | 2717 fps | 98.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,055 psi | 83% | 2740 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 54,940 psi | 86% | 2746 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,609 psi | 90% | 2720 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,332 psi | 87% | 2700 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,592 psi | 86% | 2654 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,782 psi | 87% | 2703 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,216 psi | 87% | 2720 fps | 99.6% |
| Lovex S070 | <<locked>> | 96% | 56,072 psi | 88% | 2753 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,130 psi | 60% | 2484 fps | 96.4% |
| Norma 201 | <<locked>> | 86% | 57,493 psi | 90% | 2717 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,520 psi | 85% | 2667 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,362 psi | 88% | 2759 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,650 psi | 86% | 2772 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 48,646 psi | 76% | 2779 fps | 98% |
| Norma URP | <<locked>> | 96% | 54,375 psi | 85% | 2776 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,188 psi | 90% | 2785 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,753 psi | 89% | 2828 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,788 psi | 70% | 2651 fps | 96% |
| Ramshot TAC | <<locked>> | 82% | 54,041 psi | 85% | 2694 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,896 psi | 84% | 2710 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 57% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,665 psi | 86% | 2713 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,244 psi | 85% | 2785 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,653 psi | 90% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,143 psi | 86% | 2812 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,360 psi | 85% | 2841 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 54,940 psi | 86% | 2648 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,505 psi | 85% | 2667 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,493 psi | 90% | 2759 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 2746 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,372 psi | 81% | 2746 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 94% | 56,956 psi | 89% | 2743 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,216 psi | 87% | 2720 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,332 psi | 87% | 2700 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,782 psi | 87% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,013 psi | 86% | 2743 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,535 psi | 87% | 2772 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,463 psi | 88% | 2730 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,232 psi | 90% | 2746 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,114 psi | 86% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,738 psi | 87% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,216 psi | 87% | 2674 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,879 psi | 78% | 2730 fps | 96.9% |
| Somchem S335 | <<locked>> | 84% | 54,853 psi | 86% | 2605 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,188 psi | 88% | 2717 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,348 psi | 90% | 2753 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,159 psi | 90% | 2740 fps | 95.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2825 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,199 psi | 82% | 2726 fps | 98% |
| Unknown powder | <<locked>> | 94% | 55,303 psi | 87% | 2782 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 57,101 psi | 89% | 2592 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,129 psi | 86% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,029 psi | 89% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,375 psi | 85% | 2641 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,390 psi | 87% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,796 psi | 87% | 2753 fps | 100% |
| Vihtavuori N530 | <<locked>> | 82% | 57,174 psi | 90% | 2723 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,566 psi | 90% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,159 psi | 88% | 2799 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,399 psi | 76% | 2726 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,739 psi | 89% | 2746 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,086 psi | 88% | 2812 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,914 psi | 61% | 2684 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,476 psi | 85% | 2749 fps | 97.4% |
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% | 51,590 psi | 81% | 2562 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,034 psi | 69% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,343 psi | 79% | 2638 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 41,510 psi | 65% | 2448 fps | 95.3% |
| Accurate 3100 | <<locked>> | 92% | 34,925 psi | 55% | 2418 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 43,076 psi | 68% | 2513 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,010 psi | 50% | 2362 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 48,733 psi | 76% | 2625 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,350 psi | 65% | 2484 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 47,108 psi | 74% | 2667 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,836 psi | 80% | 2625 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,040 psi | 82% | 2598 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,875 psi | 70% | 2677 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,437 psi | 65% | 2510 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,353 psi | 70% | 2569 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,155 psi | 50% | 2375 fps | 96.3% |
| Alliant Reloder-17 | 52.3 gr | 80% | 35,824 psi | 56% | 2493 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,238 psi | 72% | 2654 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,163 psi | 68% | 2644 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,411 psi | 41% | 2244 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,779 psi | 53% | 2454 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,053 psi | 50% | 2457 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,182 psi | 76% | 2638 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 41,205 psi | 65% | 2513 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 43,163 psi | 68% | 2644 fps | 95.1% |
| Bofors RP7 | <<locked>> | 84% | 41,800 psi | 66% | 2490 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,228 psi | 82% | 2605 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,240 psi | 77% | 2644 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 53,983 psi | 85% | 2648 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,959 psi | 66% | 2523 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 80% | 37,217 psi | 58% | 2477 fps | 95% |
| Hodgdon H4350 | <<locked>> | 88% | 43,308 psi | 68% | 2559 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 49,211 psi | 77% | 2635 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,617 psi | 46% | 2280 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,498 psi | 70% | 2605 fps | 100% |
| Hodgdon Superformance | 59.5 gr | 86% | 41,234 psi | 65% | 2585 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 42% | 1480 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,989 psi | 67% | 2520 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 45,237 psi | 71% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,596 psi | 64% | 2461 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,277 psi | 63% | 2431 fps | 95.9% |
| IMR 4350 | <<locked>> | 86% | 39,537 psi | 62% | 2467 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,972 psi | 63% | 2457 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 30,168 psi | 47% | 2300 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 45,455 psi | 71% | 2598 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 50,836 psi | 80% | 2625 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,356 psi | 76% | 2602 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,182 psi | 76% | 2556 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,497 psi | 68% | 2516 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,810 psi | 56% | 2372 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 38,580 psi | 60% | 2451 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 35,708 psi | 56% | 2434 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,630 psi | 75% | 2575 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,225 psi | 76% | 2575 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,700 psi | 68% | 2559 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 44,802 psi | 70% | 2605 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 39,682 psi | 62% | 2605 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 32,343 psi | 51% | 2365 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 43,656 psi | 68% | 2579 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 35,839 psi | 56% | 2454 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 41,727 psi | 65% | 2589 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 50,705 psi | 79% | 2644 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,531 psi | 79% | 2661 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,122 psi | 43% | 1516 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,163 psi | 66% | 2503 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,210 psi | 74% | 2674 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,116 psi | 60% | 2552 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,734 psi | 50% | 2375 fps | 95.6% |
| ReloadSwiss RS 70 | 54.5 gr | 82% | 33,765 psi | 53% | 2438 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,721 psi | 81% | 2602 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,397 psi | 71% | 2530 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,957 psi | 61% | 2464 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 48,559 psi | 76% | 2641 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 44,904 psi | 70% | 2635 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 41,800 psi | 66% | 2490 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,810 psi | 56% | 2372 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,356 psi | 76% | 2602 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,497 psi | 68% | 2516 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 37,594 psi | 59% | 2434 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,827 psi | 62% | 2510 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,211 psi | 77% | 2621 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,123 psi | 74% | 2598 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,863 psi | 77% | 2516 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,944 psi | 64% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,478 psi | 59% | 2372 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 43,511 psi | 68% | 2618 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,443 psi | 76% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,023 psi | 77% | 2615 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,479 psi | 62% | 2464 fps | 99.5% |
| Somchem S361 | <<locked>> | 98% | 53,505 psi | 84% | 2687 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 28,921 psi | 45% | 2320 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 40,089 psi | 63% | 2516 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 34,998 psi | 55% | 2418 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 80% | 53,737 psi | 84% | 2549 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,267 psi | 73% | 2464 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,295 psi | 69% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,005 psi | 71% | 2507 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,837 psi | 53% | 2326 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 34,954 psi | 55% | 2392 fps | 97% |
| Vihtavuori N530 | <<locked>> | 80% | 53,708 psi | 84% | 2677 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,556 psi | 70% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,549 psi | 56% | 2434 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 84% | 28,485 psi | 45% | 2313 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,185 psi | 52% | 2343 fps | 98.5% |
| Winchester 760 | <<locked>> | 80% | 37,217 psi | 58% | 2477 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,368 psi | 41% | 2316 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,007 psi | 74% | 2631 fps | 95.8% |
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 107 powders for .300 WSM loaded with the .308 | 187gr | Peregrine VLR5 (VLR-5). ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,867 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 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 187.0 gr projectile in 0.308" calls for a 1:10.5 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 .308 | 187gr | Peregrine VLR5 (VLR-5) 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.