Load Specifications
Bullet Manufacturer:Fox Bullets
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 | Fox Classic Hunter 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, 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% | 55,941 psi | 88% | 2940 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,259 psi | 85% | 2966 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,421 psi | 90% | 3002 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,650 psi | 86% | 3015 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,317 psi | 87% | 2956 fps | 96.2% |
| Accurate 4064 | <<locked>> | 94% | 57,406 psi | 90% | 3051 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 3081 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 55,071 psi | 86% | 3038 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 56,362 psi | 88% | 3038 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,696 psi | 90% | 3045 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,824 psi | 86% | 2972 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,999 psi | 88% | 3104 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,897 psi | 86% | 3159 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,072 psi | 88% | 3061 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,317 psi | 87% | 2943 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,797 psi | 89% | 3087 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 3084 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 57,014 psi | 89% | 3186 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,869 psi | 58% | 2789 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,017 psi | 64% | 2943 fps | 96.2% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,740 psi | 90% | 2923 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,042 psi | 86% | 3054 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 56,434 psi | 88% | 3074 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,855 psi | 89% | 3038 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,159 psi | 88% | 2979 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,232 psi | 90% | 3077 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,579 psi | 87% | 3127 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 54,201 psi | 85% | 2979 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,201 psi | 85% | 3035 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 96% | 55,259 psi | 87% | 3104 fps | 97.3% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 55,956 psi | 88% | 3064 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 55,593 psi | 87% | 3051 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,298 psi | 76% | 2956 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,129 psi | 86% | 3084 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,679 psi | 86% | 3114 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,969 psi | 55% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,912 psi | 88% | 3038 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 57,261 psi | 90% | 3064 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,665 psi | 86% | 3005 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 94% | 54,288 psi | 85% | 2972 fps | 96.9% |
| IMR 4198 | <<locked>> | 82% | 55,593 psi | 87% | 2904 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,737 psi | 84% | 3009 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,419 psi | 87% | 3022 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,165 psi | 71% | 2910 fps | 97.9% |
| IMR 4895 | <<locked>> | 90% | 54,404 psi | 85% | 3058 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 57,696 psi | 90% | 3045 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,099 psi | 85% | 2972 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,650 psi | 86% | 3015 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,998 psi | 86% | 2969 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 55,216 psi | 87% | 3015 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,491 psi | 85% | 3009 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3045 fps | 97.4% |
| Norma 201 | <<locked>> | 90% | 57,276 psi | 90% | 3038 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,317 psi | 85% | 2989 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,956 psi | 88% | 3071 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 53,200 psi | 83% | 3071 fps | 99% |
| Ramshot Big Game | <<locked>> | 92% | 56,710 psi | 89% | 3097 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,286 psi | 82% | 3061 fps | 97.6% |
| Ramshot TAC | <<locked>> | 86% | 54,563 psi | 86% | 3005 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,157 psi | 85% | 3028 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,187 psi | 86% | 2992 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,505 psi | 56% | 1906 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,334 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,636 psi | 86% | 3012 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 57,363 psi | 90% | 3159 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,971 psi | 89% | 3192 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,896 psi | 84% | 3104 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 3133 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 88% | 57,740 psi | 90% | 3015 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,653 psi | 90% | 3031 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,304 psi | 88% | 3064 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,855 psi | 89% | 3038 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,491 psi | 85% | 3009 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,650 psi | 86% | 3015 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,216 psi | 87% | 3015 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3045 fps | 97.4% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,971 psi | 89% | 2999 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,824 psi | 86% | 3077 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,681 psi | 89% | 2976 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,521 psi | 89% | 3038 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,290 psi | 90% | 3068 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,593 psi | 87% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,637 psi | 87% | 2920 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,955 psi | 86% | 2959 fps | 97% |
| Somchem S321 | <<locked>> | 84% | 55,477 psi | 87% | 3025 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,781 psi | 86% | 2923 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,173 psi | 88% | 3028 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 56,652 psi | 89% | 3061 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,645 psi | 75% | 3015 fps | 100% |
| Unknown powder | <<locked>> | 98% | 54,462 psi | 85% | 3081 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 86% | 57,363 psi | 90% | 2920 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,926 psi | 86% | 2907 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 57,363 psi | 90% | 2995 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 57,696 psi | 90% | 3005 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,056 psi | 86% | 3048 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 86% | 57,479 psi | 90% | 3054 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,319 psi | 90% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,245 psi | 87% | 3100 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,842 psi | 62% | 2867 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,753 psi | 89% | 3051 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,216 psi | 87% | 3051 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,259 psi | 87% | 3104 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,839 psi | 86% | 3038 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% | 46,195 psi | 72% | 2792 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,575 psi | 79% | 2907 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,319 psi | 60% | 2697 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,106 psi | 69% | 2841 fps | 99.9% |
| Accurate 2700 | <<locked>> | 92% | 51,648 psi | 81% | 2897 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,260 psi | 57% | 2680 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 37,594 psi | 59% | 2769 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 42,627 psi | 67% | 2812 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 36,143 psi | 57% | 2648 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,773 psi | 70% | 2828 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 44,759 psi | 70% | 2822 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,373 psi | 82% | 3048 fps | 99.8% |
| Alliant Power Pro 2000-MR | 56 gr | 80% | 38,653 psi | 61% | 2828 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,549 psi | 56% | 2671 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,054 psi | 82% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,363 psi | 60% | 2736 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,971 psi | 60% | 2789 fps | 95.9% |
| Alliant Reloder-17 | 56.5 gr | 82% | 32,808 psi | 51% | 2680 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,445 psi | 51% | 2667 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,189 psi | 60% | 2871 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 54,143 psi | 85% | 2874 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,887 psi | 66% | 2812 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 34,867 psi | 55% | 2664 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 49,980 psi | 78% | 2923 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,615 psi | 73% | 2822 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,352 psi | 68% | 2844 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,950 psi | 75% | 2995 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 47,427 psi | 74% | 2874 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,653 psi | 61% | 2733 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 47,993 psi | 75% | 2976 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 98% | 52,489 psi | 82% | 3005 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 43,033 psi | 67% | 2828 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,474 psi | 51% | 2615 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,608 psi | 57% | 2733 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 96% | 50,676 psi | 79% | 3041 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 41% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,334 psi | 60% | 2710 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 38,711 psi | 61% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,476 psi | 56% | 2628 fps | 95.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 48,124 psi | 75% | 2864 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 52,315 psi | 82% | 2858 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 50,183 psi | 79% | 2946 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,907 psi | 77% | 2907 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 37,115 psi | 58% | 2740 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,305 psi | 62% | 2772 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 80% | 44,773 psi | 70% | 2828 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 50,444 psi | 79% | 2917 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,466 psi | 65% | 2789 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 42,786 psi | 67% | 2749 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 37,608 psi | 59% | 2690 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 42,467 psi | 67% | 2789 fps | 95.6% |
| Lovex S070 | <<locked>> | 94% | 45,672 psi | 72% | 2871 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 41,495 psi | 65% | 2762 fps | 99% |
| Norma 202 | <<locked>> | 80% | 41,887 psi | 66% | 2776 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,710 psi | 59% | 2726 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 38,058 psi | 60% | 2776 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 37,260 psi | 58% | 2736 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 94% | 42,743 psi | 67% | 2877 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 44,715 psi | 70% | 2825 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,135 psi | 69% | 2848 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,356 psi | 76% | 2877 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,339 psi | 41% | 1703 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,227 psi | 79% | 2917 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,759 psi | 70% | 2835 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,132 psi | 63% | 2841 fps | 97.1% |
| ReloadSwiss RS 60 | 55.1 gr | 80% | 32,605 psi | 51% | 2690 fps | 98.1% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,681 psi | 59% | 2792 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,785 psi | 64% | 2864 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 45,208 psi | 71% | 2812 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,523 psi | 62% | 2710 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 32,822 psi | 51% | 2605 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 94% | 49,980 psi | 78% | 2923 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,467 psi | 67% | 2789 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,466 psi | 65% | 2789 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 37,608 psi | 59% | 2690 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 94% | 45,672 psi | 72% | 2871 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,142 psi | 83% | 2936 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,084 psi | 53% | 2661 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,026 psi | 83% | 2920 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,743 psi | 67% | 2795 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,205 psi | 65% | 2779 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,091 psi | 68% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,665 psi | 56% | 2579 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,109 psi | 75% | 2844 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 48,414 psi | 76% | 2910 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 42,598 psi | 67% | 2723 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,627 psi | 67% | 2795 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 33,765 psi | 53% | 2618 fps | 96.3% |
| Somchem S365 | <<locked>> | 86% | 29,660 psi | 46% | 2595 fps | 96% |
| Unknown powder | <<locked>> | 88% | 38,885 psi | 61% | 2779 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 47,776 psi | 75% | 2782 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,567 psi | 64% | 2674 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,841 psi | 61% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,044 psi | 61% | 2697 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 28,761 psi | 45% | 2464 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 86% | 36,521 psi | 57% | 2697 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 47,210 psi | 74% | 2884 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,696 psi | 61% | 2713 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 36,796 psi | 58% | 2740 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 34,766 psi | 54% | 2746 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,822 psi | 51% | 2582 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 47,993 psi | 75% | 2936 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 47,993 psi | 75% | 2976 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,923 psi | 80% | 2976 fps | 99.7% |
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 | 150gr | Fox Classic Hunter. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,192 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,192 fps. Accurate 4350 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 55–90 %, 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 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 | Fox Classic Hunter 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.