Load Specifications
Bullet Manufacturer:Lehigh Defense
Bullet Weight:152 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:1:12.0
Load data in caliber .300 WSM with .308 | 152gr | Lehigh Defense Controlled Chaos bullet and 101 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 Alliant Power Pro 2000-MR.
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>> | 84% | 54,230 psi | 85% | 2890 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,202 psi | 88% | 2966 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,478 psi | 89% | 2966 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,623 psi | 89% | 3018 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,985 psi | 89% | 2963 fps | 96.7% |
| Accurate 4064 | <<locked>> | 92% | 56,376 psi | 88% | 3012 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,130 psi | 88% | 3091 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 56,942 psi | 89% | 3045 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 54,389 psi | 85% | 2989 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,738 psi | 87% | 2992 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,652 psi | 89% | 2969 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,579 psi | 89% | 3166 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,346 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,290 psi | 90% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,027 psi | 86% | 3035 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 3094 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,143 psi | 86% | 3136 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,450 psi | 60% | 2805 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,047 psi | 67% | 2969 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,956 psi | 89% | 3061 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 54,868 psi | 86% | 3028 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,013 psi | 86% | 2989 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,609 psi | 90% | 2976 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,201 psi | 87% | 3022 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,305 psi | 90% | 3130 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 55,738 psi | 87% | 2979 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,999 psi | 88% | 3038 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 96% | 57,101 psi | 89% | 3114 fps | 97.7% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 57,537 psi | 90% | 3068 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 88% | 57,566 psi | 90% | 3058 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,053 psi | 78% | 2966 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,898 psi | 89% | 3087 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,405 psi | 88% | 3123 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,462 psi | 56% | 1854 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,406 psi | 90% | 3038 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,593 psi | 87% | 3015 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,507 psi | 89% | 3012 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 56,028 psi | 88% | 2979 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 56,913 psi | 89% | 2897 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 3015 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 57,174 psi | 90% | 3028 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,239 psi | 74% | 2923 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 56,434 psi | 88% | 3068 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,738 psi | 87% | 2992 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 56,043 psi | 88% | 2979 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,623 psi | 89% | 3018 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,434 psi | 88% | 2969 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,985 psi | 89% | 3018 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,260 psi | 88% | 3015 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3051 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 55,593 psi | 87% | 2989 fps | 100% |
| Norma 202 | <<locked>> | 88% | 56,057 psi | 88% | 2989 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,740 psi | 90% | 3077 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 55,027 psi | 86% | 3077 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 90% | 54,636 psi | 86% | 3045 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 54,056 psi | 85% | 3071 fps | 98% |
| Ramshot TAC | <<locked>> | 86% | 56,347 psi | 88% | 3012 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,811 psi | 87% | 3031 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,753 psi | 89% | 2992 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,853 psi | 56% | 1896 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,347 psi | 87% | 2976 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,318 psi | 88% | 3018 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,201 psi | 87% | 3100 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,853 psi | 86% | 3136 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,941 psi | 88% | 3114 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 3140 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 56,478 psi | 89% | 2969 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,912 psi | 88% | 2986 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,650 psi | 86% | 3015 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 55,013 psi | 86% | 2989 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,260 psi | 88% | 3015 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,623 psi | 89% | 3018 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,985 psi | 89% | 3018 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3051 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,550 psi | 89% | 3081 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,781 psi | 86% | 2989 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,187 psi | 86% | 3012 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,116 psi | 90% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,203 psi | 90% | 2920 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,956 psi | 89% | 2969 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 57,188 psi | 90% | 3028 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,449 psi | 88% | 2923 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,085 psi | 85% | 2976 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 55,216 psi | 87% | 3018 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,516 psi | 78% | 3025 fps | 100% |
| Unknown powder | <<locked>> | 98% | 56,246 psi | 88% | 3084 fps | 99% |
| Vihtavuori N130 | <<locked>> | 84% | 55,579 psi | 87% | 2874 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,710 psi | 89% | 2904 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,811 psi | 87% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,782 psi | 87% | 2956 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,289 psi | 88% | 2992 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,159 psi | 90% | 3061 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 55,434 psi | 87% | 2999 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 55,506 psi | 87% | 2986 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 57,116 psi | 90% | 3107 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,061 psi | 66% | 2890 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,621 psi | 86% | 2999 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,971 psi | 89% | 3051 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,101 psi | 89% | 3114 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,476 psi | 54% | 2792 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,536 psi | 89% | 3041 fps | 100% |
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% | 47,935 psi | 75% | 2795 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,489 psi | 82% | 2913 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,756 psi | 64% | 2717 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,195 psi | 72% | 2854 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 49,835 psi | 78% | 2844 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 38,537 psi | 60% | 2703 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 37,072 psi | 58% | 2733 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 44,179 psi | 69% | 2822 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 37,666 psi | 59% | 2664 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,267 psi | 73% | 2835 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 46,485 psi | 73% | 2825 fps | 100% |
| Alliant Power Pro 2000-MR | 56 gr | 80% | 40,045 psi | 63% | 2841 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,072 psi | 58% | 2684 fps | 97.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,737 psi | 84% | 2897 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,929 psi | 63% | 2749 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 37,014 psi | 58% | 2743 fps | 95.7% |
| Alliant Reloder-17 | 55.2 gr | 80% | 32,126 psi | 50% | 2641 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 32,053 psi | 50% | 2635 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 40,103 psi | 63% | 2900 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,366 psi | 68% | 2822 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 36,840 psi | 58% | 2687 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 48,747 psi | 76% | 2881 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,979 psi | 75% | 2822 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,049 psi | 71% | 2851 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,647 psi | 78% | 3002 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 49,197 psi | 77% | 2877 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,565 psi | 59% | 2687 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 90% | 46,586 psi | 73% | 2930 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 98% | 54,085 psi | 85% | 3012 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 44,585 psi | 70% | 2835 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,952 psi | 50% | 2579 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,116 psi | 60% | 2746 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 94% | 48,834 psi | 77% | 2989 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,281 psi | 41% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,682 psi | 62% | 2717 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 40,553 psi | 64% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,825 psi | 58% | 2638 fps | 96.4% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,760 psi | 73% | 2815 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 53,882 psi | 84% | 2854 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 48,863 psi | 77% | 2904 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,558 psi | 75% | 2861 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 36,535 psi | 57% | 2703 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 40,886 psi | 64% | 2782 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 46,267 psi | 73% | 2835 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 52,344 psi | 82% | 2920 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,265 psi | 68% | 2802 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 44,324 psi | 69% | 2759 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 39,421 psi | 62% | 2707 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 41,466 psi | 65% | 2746 fps | 95.4% |
| Lovex S070 | <<locked>> | 92% | 44,512 psi | 70% | 2828 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,410 psi | 68% | 2776 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 43,482 psi | 68% | 2782 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,291 psi | 62% | 2736 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 37,188 psi | 58% | 2733 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,754 psi | 61% | 2746 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 44,280 psi | 69% | 2890 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 46,166 psi | 72% | 2831 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,658 psi | 72% | 2854 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,850 psi | 78% | 2881 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,701 psi | 42% | 1696 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,764 psi | 81% | 2920 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,323 psi | 68% | 2785 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,858 psi | 66% | 2854 fps | 97.7% |
| ReloadSwiss RS 60 | 55.2 gr | 80% | 34,200 psi | 54% | 2713 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,724 psi | 58% | 2746 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,537 psi | 62% | 2815 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 47,311 psi | 74% | 2822 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,191 psi | 65% | 2723 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 34,563 psi | 54% | 2625 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 48,747 psi | 76% | 2881 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,466 psi | 65% | 2746 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,265 psi | 68% | 2802 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 39,421 psi | 62% | 2707 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 44,512 psi | 70% | 2828 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,505 psi | 56% | 2674 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,382 psi | 70% | 2805 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,670 psi | 67% | 2785 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,541 psi | 70% | 2726 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,028 psi | 58% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,717 psi | 73% | 2799 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 50,053 psi | 78% | 2913 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 44,353 psi | 70% | 2733 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,179 psi | 69% | 2805 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 35,520 psi | 56% | 2638 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 29,196 psi | 46% | 2559 fps | 96% |
| Unknown powder | <<locked>> | 88% | 40,654 psi | 64% | 2799 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 49,472 psi | 78% | 2785 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,989 psi | 66% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,538 psi | 64% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,756 psi | 64% | 2710 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,197 psi | 47% | 2480 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 86% | 38,058 psi | 60% | 2710 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 48,747 psi | 76% | 2890 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 40,408 psi | 63% | 2726 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 38,595 psi | 60% | 2759 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 94% | 34,403 psi | 54% | 2713 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,995 psi | 50% | 2539 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 49,603 psi | 78% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 46,586 psi | 73% | 2930 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 32,242 psi | 51% | 2720 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,576 psi | 82% | 2979 fps | 99.9% |
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 101 powders for .300 WSM loaded with the .308 | 152gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,854 fps to 3,166 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 152.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, Alliant Power Pro 2000-MR rank at the top here: for .300 WSM with the .308 | 152gr | 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.