Load Specifications
Bullet Manufacturer:Hasler
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:1:12.0
Load data in caliber .300 WSM with .308 | 150gr | Hasler Hunting 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 Power Pro 2000-MR, Alliant Reloder-17 and ReloadSwiss RS 60.
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% | 56,362 psi | 88% | 2949 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,578 psi | 86% | 2972 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,375 psi | 85% | 2966 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,072 psi | 89% | 3045 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,505 psi | 85% | 2963 fps | 96.2% |
| Accurate 4064 | <<locked>> | 92% | 54,375 psi | 85% | 3012 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 3097 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 55,608 psi | 87% | 3054 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 56,884 psi | 89% | 3054 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,795 psi | 86% | 3005 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,303 psi | 87% | 2979 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,434 psi | 88% | 3117 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,463 psi | 87% | 3176 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,637 psi | 89% | 3074 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,796 psi | 87% | 2953 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,348 psi | 90% | 3097 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,591 psi | 82% | 3097 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,838 psi | 84% | 3140 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,260 psi | 58% | 2802 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,785 psi | 65% | 2966 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,825 psi | 87% | 3071 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 57,348 psi | 90% | 3091 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,348 psi | 90% | 3051 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,492 psi | 89% | 2989 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,983 psi | 85% | 3031 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,188 psi | 88% | 3140 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 55,405 psi | 87% | 3002 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,623 psi | 89% | 3028 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,708 psi | 86% | 3045 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 54,114 psi | 85% | 3091 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 96% | 55,071 psi | 86% | 3054 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 56,202 psi | 88% | 3064 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,805 psi | 76% | 2969 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,695 psi | 87% | 3097 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,274 psi | 87% | 3130 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,186 psi | 55% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,566 psi | 90% | 3068 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,956 psi | 88% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,275 psi | 88% | 3035 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,376 psi | 88% | 3012 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 56,086 psi | 88% | 2913 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,157 psi | 85% | 3022 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,144 psi | 88% | 3035 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3028 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 54,998 psi | 86% | 3071 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 54,795 psi | 86% | 3005 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,694 psi | 86% | 2986 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,274 psi | 87% | 3028 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,303 psi | 87% | 2979 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 55,811 psi | 87% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,940 psi | 86% | 3022 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3061 fps | 97.6% |
| Norma 201 | <<locked>> | 90% | 57,595 psi | 90% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,955 psi | 86% | 3002 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,507 psi | 89% | 3084 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 53,969 psi | 85% | 3087 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 57,188 psi | 90% | 3110 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,721 psi | 83% | 3074 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 55,042 psi | 86% | 3018 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,679 psi | 86% | 3038 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,724 psi | 87% | 3005 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,505 psi | 56% | 1909 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,711 psi | 90% | 3038 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,114 psi | 86% | 3025 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,027 psi | 85% | 3110 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,508 psi | 90% | 3205 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,389 psi | 85% | 3117 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,592 psi | 86% | 3150 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 54,882 psi | 86% | 2976 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,665 psi | 86% | 2992 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,884 psi | 89% | 3074 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,348 psi | 90% | 3051 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,940 psi | 86% | 3022 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,274 psi | 87% | 3028 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,811 psi | 87% | 3028 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3061 fps | 97.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,580 psi | 90% | 3009 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,361 psi | 87% | 3087 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,130 psi | 90% | 2982 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,305 psi | 90% | 3054 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,128 psi | 85% | 3022 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,912 psi | 88% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,217 psi | 88% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,680 psi | 87% | 2976 fps | 97.2% |
| Somchem S321 | <<locked>> | 84% | 56,043 psi | 88% | 3038 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,114 psi | 86% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,971 psi | 89% | 3048 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 57,174 psi | 90% | 3074 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,109 psi | 75% | 3028 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,637 psi | 87% | 2900 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,159 psi | 88% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,389 psi | 85% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,506 psi | 87% | 2979 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,303 psi | 87% | 3002 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 3084 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 55,230 psi | 87% | 3002 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,261 psi | 90% | 3025 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3087 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,553 psi | 64% | 2884 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3064 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,013 psi | 86% | 3051 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,375 psi | 85% | 3094 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,185 psi | 52% | 2772 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,027 psi | 85% | 3031 fps | 99.9% |
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% | 46,615 psi | 73% | 2805 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,198 psi | 80% | 2920 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,754 psi | 61% | 2707 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,253 psi | 72% | 2874 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,908 psi | 80% | 2904 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,666 psi | 57% | 2694 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 35,520 psi | 56% | 2723 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 43,004 psi | 67% | 2825 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 36,463 psi | 57% | 2661 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,150 psi | 71% | 2838 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 45,223 psi | 71% | 2831 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,866 psi | 83% | 3058 fps | 99.9% |
| Alliant Power Pro 2000-MR | 56.6 gr | 80% | 39,117 psi | 61% | 2844 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,882 psi | 56% | 2680 fps | 97.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,533 psi | 82% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,711 psi | 61% | 2749 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,056 psi | 56% | 2743 fps | 95.2% |
| Alliant Reloder-17 | 57.1 gr | 82% | 33,214 psi | 52% | 2697 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,793 psi | 51% | 2684 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,725 psi | 61% | 2890 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,206 psi | 66% | 2822 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 35,404 psi | 55% | 2680 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 50,517 psi | 79% | 2940 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,949 psi | 74% | 2831 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,918 psi | 69% | 2858 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,602 psi | 76% | 3009 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 51,663 psi | 81% | 2946 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,634 psi | 82% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,943 psi | 61% | 2743 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 94% | 47,253 psi | 74% | 2966 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 51,692 psi | 81% | 2995 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 43,395 psi | 68% | 2838 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,806 psi | 48% | 2572 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,465 psi | 62% | 2802 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 94% | 47,790 psi | 75% | 2992 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 41% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,684 psi | 65% | 2785 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 42,888 psi | 67% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,261 psi | 60% | 2697 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,557 psi | 73% | 2838 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 52,808 psi | 83% | 2867 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 50,879 psi | 80% | 2966 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,398 psi | 73% | 2861 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 36,811 psi | 58% | 2736 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,668 psi | 62% | 2782 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 45,150 psi | 71% | 2838 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 51,053 psi | 80% | 2930 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,843 psi | 66% | 2802 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 43,337 psi | 68% | 2766 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 38,174 psi | 60% | 2707 fps | 98.5% |
| Lovex S065 | <<locked>> | 90% | 42,743 psi | 67% | 2799 fps | 95.8% |
| Lovex S070 | <<locked>> | 94% | 46,166 psi | 72% | 2884 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 41,858 psi | 66% | 2772 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 42,250 psi | 66% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,087 psi | 60% | 2740 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 36,100 psi | 57% | 2730 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 37,753 psi | 59% | 2749 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 43,134 psi | 68% | 2890 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 45,208 psi | 71% | 2841 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,469 psi | 70% | 2858 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,892 psi | 77% | 2890 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 41% | 1706 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,618 psi | 79% | 2930 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,252 psi | 71% | 2851 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,538 psi | 64% | 2854 fps | 97.3% |
| ReloadSwiss RS 60 | 55.7 gr | 80% | 33,054 psi | 52% | 2707 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 38,101 psi | 60% | 2805 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,162 psi | 65% | 2881 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 45,614 psi | 71% | 2825 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,885 psi | 63% | 2723 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 33,170 psi | 52% | 2618 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 50,517 psi | 79% | 2940 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,743 psi | 67% | 2799 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,843 psi | 66% | 2802 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 38,174 psi | 60% | 2707 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 46,166 psi | 72% | 2884 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,766 psi | 84% | 2953 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,360 psi | 54% | 2671 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,505 psi | 84% | 2933 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,250 psi | 68% | 2808 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,510 psi | 65% | 2789 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,482 psi | 68% | 2736 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,027 psi | 56% | 2592 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,513 psi | 71% | 2802 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 48,747 psi | 76% | 2920 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,946 psi | 67% | 2733 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,946 psi | 67% | 2805 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 34,127 psi | 53% | 2628 fps | 96.5% |
| Somchem S365 | <<locked>> | 84% | 28,007 psi | 44% | 2546 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 49,226 psi | 77% | 2805 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,830 psi | 69% | 2733 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,262 psi | 62% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,045 psi | 63% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,460 psi | 51% | 2566 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 37,782 psi | 59% | 2736 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 45,237 psi | 71% | 2835 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 38,653 psi | 61% | 2707 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 37,188 psi | 58% | 2733 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 35,360 psi | 55% | 2766 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,053 psi | 49% | 2536 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 44,802 psi | 70% | 2881 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 47,485 psi | 74% | 2972 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,154 psi | 49% | 2703 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,017 psi | 64% | 2795 fps | 98.5% |
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 115 powders for .300 WSM loaded with the .308 | 150gr | Hasler Hunting. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,205 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,205 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 150gr | Hasler Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.