Load Specifications
Bullet Manufacturer:SAKO
Bullet Weight:150 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 | 150gr | Sako Powerhead Blade bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 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>> | 86% | 55,535 psi | 87% | 2933 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,725 psi | 90% | 3012 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,014 psi | 89% | 2995 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 56,072 psi | 88% | 3025 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,261 psi | 90% | 2999 fps | 96.6% |
| Accurate 4064 | <<locked>> | 94% | 57,000 psi | 89% | 3045 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3074 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 54,694 psi | 86% | 3031 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 94% | 55,767 psi | 87% | 3028 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,334 psi | 90% | 3038 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,331 psi | 85% | 2963 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,521 psi | 87% | 3097 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,578 psi | 86% | 3153 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,463 psi | 87% | 3051 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,114 psi | 86% | 2940 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,173 psi | 88% | 3074 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,880 psi | 81% | 3077 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,724 psi | 89% | 3182 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,477 psi | 57% | 2776 fps | 97.1% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,421 psi | 90% | 2917 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,694 psi | 86% | 3045 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 56,115 psi | 88% | 3068 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,594 psi | 89% | 3031 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,840 psi | 88% | 2972 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,840 psi | 89% | 3071 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,143 psi | 86% | 3117 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 54,578 psi | 86% | 2986 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,622 psi | 87% | 3009 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,508 psi | 90% | 3084 fps | 99.2% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3130 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 98% | 57,595 psi | 90% | 3087 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 88% | 55,216 psi | 87% | 3045 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,732 psi | 75% | 2946 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,505 psi | 85% | 3074 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,201 psi | 85% | 3104 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,056 psi | 55% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,637 psi | 89% | 3048 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,027 psi | 86% | 3031 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,405 psi | 87% | 3015 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,550 psi | 87% | 2992 fps | 97.1% |
| IMR 4198 | <<locked>> | 82% | 55,376 psi | 87% | 2900 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2999 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,129 psi | 86% | 3012 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,531 psi | 79% | 3005 fps | 98.8% |
| IMR 4895 | <<locked>> | 92% | 57,609 psi | 90% | 3107 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 57,334 psi | 90% | 3038 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,595 psi | 90% | 3022 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,244 psi | 85% | 3009 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,636 psi | 86% | 2959 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 54,853 psi | 86% | 3009 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 3054 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 3031 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 56,898 psi | 89% | 3031 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,580 psi | 90% | 3031 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,274 psi | 87% | 3061 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 52,605 psi | 82% | 3058 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 92% | 56,405 psi | 88% | 3091 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,779 psi | 81% | 3051 fps | 97.4% |
| Ramshot TAC | <<locked>> | 86% | 54,244 psi | 85% | 2999 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,595 psi | 90% | 3077 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,868 psi | 86% | 2986 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 55% | 1900 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,956 psi | 89% | 3022 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,056 psi | 85% | 3002 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,695 psi | 89% | 3146 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,405 psi | 88% | 3182 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,301 psi | 84% | 3094 fps | 98.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,461 psi | 84% | 3120 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 88% | 57,609 psi | 90% | 3012 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,290 psi | 90% | 3025 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,956 psi | 88% | 3058 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,594 psi | 89% | 3031 fps | 96.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,464 psi | 90% | 3054 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,244 psi | 85% | 3009 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,853 psi | 86% | 3009 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 3031 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,608 psi | 89% | 2989 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,230 psi | 85% | 3064 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,173 psi | 88% | 2966 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,188 psi | 88% | 3031 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,710 psi | 89% | 3054 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,158 psi | 86% | 2920 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,274 psi | 87% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,708 psi | 86% | 2953 fps | 96.9% |
| Somchem S321 | <<locked>> | 84% | 55,143 psi | 86% | 3018 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,404 psi | 85% | 2917 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,869 psi | 88% | 3025 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 56,304 psi | 88% | 3054 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,065 psi | 74% | 3002 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,810 psi | 86% | 2884 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,361 psi | 87% | 2904 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,927 psi | 89% | 2989 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,549 psi | 85% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,476 psi | 85% | 2982 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,622 psi | 87% | 3061 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 86% | 54,288 psi | 85% | 2986 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,130 psi | 88% | 3002 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3064 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,523 psi | 62% | 2858 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3041 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,998 psi | 85% | 3031 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3130 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,666 psi | 89% | 3064 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% | 45,788 psi | 72% | 2785 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,183 psi | 79% | 2900 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,130 psi | 60% | 2690 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,252 psi | 71% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,169 psi | 79% | 2881 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 36,071 psi | 57% | 2677 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 37,217 psi | 58% | 2759 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 42,279 psi | 66% | 2805 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 35,984 psi | 56% | 2644 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,425 psi | 70% | 2818 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 44,280 psi | 69% | 2815 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,938 psi | 81% | 3038 fps | 99.8% |
| Alliant Power Pro 2000-MR | 55.6 gr | 80% | 38,334 psi | 60% | 2818 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,389 psi | 55% | 2664 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,866 psi | 81% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,029 psi | 60% | 2730 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,681 psi | 59% | 2779 fps | 95.7% |
| Alliant Reloder-17 | 56.1 gr | 82% | 32,532 psi | 51% | 2671 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,198 psi | 50% | 2661 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,809 psi | 84% | 2867 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,582 psi | 65% | 2805 fps | 97% |
| Bofors RP3 | <<locked>> | 80% | 34,708 psi | 54% | 2661 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 49,705 psi | 78% | 2917 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,253 psi | 72% | 2815 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,989 psi | 67% | 2835 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,558 psi | 75% | 2986 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 80% | 50,807 psi | 80% | 2927 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,924 psi | 81% | 2953 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,305 psi | 60% | 2726 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 94% | 46,267 psi | 73% | 2943 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 96% | 54,027 psi | 85% | 3028 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 42,656 psi | 67% | 2818 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,358 psi | 51% | 2608 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,580 psi | 60% | 2779 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 96% | 50,459 psi | 79% | 3038 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 41% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,988 psi | 64% | 2766 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 41,989 psi | 66% | 2818 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,753 psi | 59% | 2680 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,979 psi | 77% | 2877 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 52,098 psi | 82% | 2851 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,922 psi | 78% | 2943 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,617 psi | 76% | 2897 fps | 95.5% |
| IMR 4831 | <<locked>> | 90% | 36,013 psi | 56% | 2713 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 38,928 psi | 61% | 2762 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 44,425 psi | 70% | 2818 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 50,053 psi | 78% | 2910 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,104 psi | 64% | 2782 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 42,627 psi | 67% | 2746 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 37,449 psi | 59% | 2684 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 42,163 psi | 66% | 2782 fps | 95.4% |
| Lovex S070 | <<locked>> | 94% | 45,397 psi | 71% | 2864 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 41,321 psi | 65% | 2756 fps | 99% |
| Norma 202 | <<locked>> | 80% | 41,713 psi | 65% | 2772 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,376 psi | 59% | 2717 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 37,753 psi | 59% | 2766 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 36,941 psi | 58% | 2726 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 45,266 psi | 71% | 2930 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 44,396 psi | 70% | 2818 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,816 psi | 69% | 2841 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,022 psi | 75% | 2871 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 41% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,864 psi | 78% | 2910 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,469 psi | 70% | 2828 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,769 psi | 62% | 2835 fps | 97% |
| ReloadSwiss RS 60 | 54.8 gr | 80% | 32,503 psi | 51% | 2684 fps | 98.1% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,202 psi | 58% | 2779 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,567 psi | 64% | 2858 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,005 psi | 71% | 2805 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,146 psi | 61% | 2703 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 32,503 psi | 51% | 2598 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 49,705 psi | 78% | 2917 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,163 psi | 66% | 2782 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,104 psi | 64% | 2782 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 37,449 psi | 59% | 2684 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 94% | 45,397 psi | 71% | 2864 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,808 psi | 83% | 2933 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,765 psi | 53% | 2651 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,823 psi | 83% | 2917 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,409 psi | 66% | 2785 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,843 psi | 64% | 2769 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,946 psi | 67% | 2720 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,505 psi | 56% | 2575 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,790 psi | 75% | 2838 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 48,051 psi | 75% | 2904 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 42,438 psi | 67% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,337 psi | 66% | 2789 fps | 98.1% |
| Somchem S355 | <<locked>> | 80% | 33,634 psi | 53% | 2612 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 29,399 psi | 46% | 2589 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 48,617 psi | 76% | 2792 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,265 psi | 68% | 2717 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,667 psi | 61% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,320 psi | 62% | 2700 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,836 psi | 50% | 2546 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 88% | 36,985 psi | 58% | 2710 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 44,498 psi | 70% | 2815 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 37,826 psi | 59% | 2684 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 38,899 psi | 61% | 2769 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 96% | 34,447 psi | 54% | 2736 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,605 psi | 51% | 2575 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 43,845 psi | 69% | 2858 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 46,514 psi | 73% | 2949 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,147 psi | 63% | 2769 fps | 98.2% |
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 103 powders for .300 WSM loaded with the .308 | 150gr | Sako Powerhead Blade. Alliant Reloder-17 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,182 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.0 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 150gr | Sako Powerhead Blade 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.