Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:175 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:1:11.0
Load data in caliber .300 WSM with .308 | 175gr | Lehigh Defense Controlled Chaos bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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% | 54,578 psi | 86% | 2690 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 57,043 psi | 89% | 2759 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 57,087 psi | 89% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,956 psi | 89% | 2776 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,947 psi | 69% | 2674 fps | 97.3% |
| Accurate 4064 | <<locked>> | 90% | 57,261 psi | 90% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 57,377 psi | 90% | 2907 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 57,174 psi | 90% | 2844 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,607 psi | 86% | 2792 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2828 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,956 psi | 88% | 2792 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,334 psi | 90% | 2762 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,130 psi | 90% | 2969 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,926 psi | 86% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,230 psi | 87% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,404 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,651 psi | 87% | 2940 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,546 psi | 79% | 2815 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,843 psi | 66% | 2707 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,036 psi | 74% | 2874 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,942 psi | 89% | 2861 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 55,521 psi | 87% | 2831 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,303 psi | 87% | 2805 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,522 psi | 90% | 2772 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,637 psi | 87% | 2825 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,653 psi | 90% | 2923 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 55,941 psi | 88% | 2769 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,289 psi | 88% | 2844 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 53,969 psi | 85% | 2871 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 96% | 54,781 psi | 86% | 2835 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 84% | 54,186 psi | 85% | 2802 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2835 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,377 psi | 90% | 2887 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,753 psi | 89% | 2940 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,694 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,609 psi | 90% | 2835 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,376 psi | 88% | 2808 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,695 psi | 89% | 2815 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 56,072 psi | 88% | 2792 fps | 98.5% |
| IMR 4350 | <<locked>> | 98% | 55,709 psi | 87% | 2831 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,174 psi | 90% | 2835 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 2799 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 56,666 psi | 89% | 2864 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,956 psi | 88% | 2792 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 57,087 psi | 89% | 2815 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,376 psi | 88% | 2769 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,392 psi | 90% | 2818 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,826 psi | 89% | 2831 fps | 99.4% |
| Lovex S070 | <<locked>> | 96% | 54,273 psi | 85% | 2815 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 55,840 psi | 88% | 2785 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,478 psi | 89% | 2789 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,476 psi | 85% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,536 psi | 89% | 2884 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 46,789 psi | 73% | 2828 fps | 96.9% |
| Norma URP | <<locked>> | 98% | 56,014 psi | 88% | 2890 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,259 psi | 87% | 2851 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,781 psi | 86% | 2890 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 56,275 psi | 88% | 2815 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,840 psi | 88% | 2828 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,623 psi | 89% | 2792 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,419 psi | 57% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,579 psi | 89% | 2831 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,883 psi | 88% | 2904 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,434 psi | 87% | 2936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,840 psi | 89% | 2927 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,101 psi | 88% | 2956 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,608 psi | 89% | 2762 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,246 psi | 88% | 2785 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,332 psi | 87% | 2822 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,284 psi | 77% | 2795 fps | 96% |
| Rottweil R 907 | <<locked>> | 94% | 55,303 psi | 87% | 2805 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,826 psi | 89% | 2831 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,087 psi | 89% | 2815 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,392 psi | 90% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,273 psi | 85% | 2815 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,276 psi | 90% | 2887 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,824 psi | 86% | 2795 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,390 psi | 87% | 2815 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,101 psi | 89% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,493 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,985 psi | 89% | 2785 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,805 psi | 76% | 2789 fps | 95.9% |
| Somchem S321 | <<locked>> | 82% | 57,305 psi | 90% | 2825 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,579 psi | 89% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,244 psi | 85% | 2782 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,651 psi | 87% | 2822 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,215 psi | 85% | 2890 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,140 psi | 79% | 2776 fps | 97% |
| Unknown powder | <<locked>> | 96% | 57,014 psi | 89% | 2897 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 55,550 psi | 87% | 2667 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,797 psi | 89% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,260 psi | 88% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,970 psi | 88% | 2753 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 57,116 psi | 90% | 2802 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,027 psi | 85% | 2818 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 55,564 psi | 87% | 2795 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,709 psi | 87% | 2782 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,172 psi | 85% | 2864 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,267 psi | 73% | 2779 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,868 psi | 86% | 2808 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,276 psi | 90% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,969 psi | 85% | 2871 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,449 psi | 59% | 2723 fps | 99.7% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,446 psi | 82% | 2802 fps | 96.3% |
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% | 51,343 psi | 80% | 2644 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,150 psi | 69% | 2579 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,748 psi | 78% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 43,845 psi | 69% | 2562 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 38,363 psi | 60% | 2566 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 41,771 psi | 65% | 2575 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,924 psi | 52% | 2461 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 47,355 psi | 74% | 2690 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,248 psi | 63% | 2543 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 48,385 psi | 76% | 2769 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,458 psi | 78% | 2694 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,212 psi | 79% | 2671 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,337 psi | 68% | 2733 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,987 psi | 63% | 2566 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,033 psi | 67% | 2631 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,170 psi | 52% | 2477 fps | 95.9% |
| Alliant Reloder-17 | 53.1 gr | 80% | 34,592 psi | 54% | 2539 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,601 psi | 75% | 2762 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,790 psi | 45% | 2385 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,375 psi | 55% | 2618 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,615 psi | 73% | 2697 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 39,885 psi | 63% | 2572 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 43,308 psi | 68% | 2598 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,952 psi | 80% | 2677 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,617 psi | 76% | 2720 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,708 psi | 84% | 2867 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 52,576 psi | 82% | 2723 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,654 psi | 64% | 2575 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 84% | 41,176 psi | 65% | 2641 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 90% | 45,571 psi | 71% | 2677 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 47,863 psi | 75% | 2700 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,587 psi | 45% | 2323 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,466 psi | 65% | 2631 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 42,714 psi | 67% | 2694 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 42% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,409 psi | 66% | 2589 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 43,918 psi | 69% | 2625 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,566 psi | 62% | 2520 fps | 98.4% |
| IMR 4166 Enduron | <<locked>> | 82% | 41,524 psi | 65% | 2536 fps | 95.4% |
| IMR 4350 | <<locked>> | 90% | 43,511 psi | 68% | 2625 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,250 psi | 66% | 2579 fps | 95.6% |
| IMR 4831 | <<locked>> | 86% | 33,069 psi | 52% | 2448 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 44,106 psi | 69% | 2661 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 49,458 psi | 78% | 2694 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,804 psi | 73% | 2667 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,036 psi | 74% | 2621 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 42,293 psi | 66% | 2579 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,014 psi | 58% | 2474 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 39,871 psi | 62% | 2556 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,427 psi | 73% | 2641 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,630 psi | 73% | 2641 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,409 psi | 66% | 2618 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 49,487 psi | 78% | 2772 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 40,785 psi | 64% | 2707 fps | 95% |
| Norma URP | <<locked>> | 82% | 33,315 psi | 52% | 2464 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 42,119 psi | 66% | 2635 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 36,883 psi | 58% | 2552 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 49,226 psi | 77% | 2703 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,921 psi | 77% | 2723 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,200 psi | 83% | 2743 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,064 psi | 42% | 1572 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,901 psi | 64% | 2559 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,571 psi | 71% | 2736 fps | 99.3% |
| ReloadSwiss RS 60 | 53.1 gr | 80% | 36,811 psi | 58% | 2605 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,663 psi | 51% | 2477 fps | 95.2% |
| ReloadSwiss RS 70 | 56.7 gr | 84% | 34,969 psi | 55% | 2539 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 50,299 psi | 79% | 2671 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,034 psi | 69% | 2592 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,507 psi | 59% | 2516 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 46,267 psi | 73% | 2743 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 43,308 psi | 68% | 2598 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,014 psi | 58% | 2474 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,804 psi | 73% | 2667 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,293 psi | 66% | 2579 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,871 psi | 62% | 2556 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,435 psi | 60% | 2566 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,863 psi | 75% | 2684 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,730 psi | 72% | 2657 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,485 psi | 74% | 2585 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,740 psi | 62% | 2454 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,321 psi | 65% | 2523 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,832 psi | 72% | 2736 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 53,548 psi | 84% | 2772 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 47,268 psi | 74% | 2589 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,427 psi | 74% | 2677 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 38,348 psi | 60% | 2523 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 27,963 psi | 44% | 2362 fps | 97.1% |
| Somchem S385 | <<locked>> | 96% | 44,092 psi | 69% | 2671 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 33,852 psi | 53% | 2464 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 52,562 psi | 82% | 2628 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,962 psi | 70% | 2533 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,801 psi | 69% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,758 psi | 69% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,706 psi | 51% | 2375 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 80% | 33,765 psi | 53% | 2441 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 51,967 psi | 81% | 2743 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,279 psi | 68% | 2592 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,360 psi | 54% | 2484 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 88% | 31,053 psi | 49% | 2457 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,126 psi | 50% | 2388 fps | 97.5% |
| Winchester 748 | <<locked>> | 80% | 53,388 psi | 84% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 41,176 psi | 65% | 2641 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,209 psi | 43% | 2405 fps | 95% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,631 psi | 76% | 2736 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 104 powders for .300 WSM loaded with the .308 | 175gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,969 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 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 175.0 gr projectile in 0.308" calls for a 1:11.0 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. Alliant Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .300 WSM with the .308 | 175gr | Lehigh Defense Controlled Chaos 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.