Load Specifications
Bullet Manufacturer:Fox Bullets
Bullet Weight:155 gr
Bullet Diameter:0.306"
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:1:11.5
Load data in caliber .300 WSM with .306 | 155gr | 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 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>> | 86% | 56,637 psi | 89% | 2900 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,998 psi | 86% | 2927 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,882 psi | 86% | 2920 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,608 psi | 87% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,231 psi | 88% | 2930 fps | 96.7% |
| Accurate 4064 | <<locked>> | 92% | 54,998 psi | 86% | 2969 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 3054 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 56,101 psi | 88% | 3009 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 57,174 psi | 90% | 3005 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,187 psi | 86% | 2959 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,651 psi | 87% | 2933 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,072 psi | 89% | 3074 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,898 psi | 88% | 3133 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,014 psi | 89% | 3028 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,173 psi | 88% | 2904 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,711 psi | 90% | 3051 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,113 psi | 83% | 3058 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,447 psi | 85% | 3100 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,608 psi | 59% | 2769 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,047 psi | 66% | 2927 fps | 96.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,956 psi | 88% | 3022 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 53,751 psi | 84% | 2986 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,172 psi | 85% | 2953 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,840 psi | 89% | 2940 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,273 psi | 85% | 2986 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,536 psi | 89% | 3091 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 55,114 psi | 86% | 2943 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,100 psi | 86% | 3002 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 96% | 56,434 psi | 88% | 3077 fps | 97.8% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3035 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 88% | 56,652 psi | 89% | 3022 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,269 psi | 77% | 2927 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,115 psi | 88% | 3051 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,608 psi | 87% | 3087 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,230 psi | 55% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,681 psi | 89% | 3002 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 54,940 psi | 86% | 2979 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,709 psi | 87% | 2976 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 94% | 55,274 psi | 87% | 2943 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 56,304 psi | 88% | 2864 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2979 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,275 psi | 88% | 2989 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,079 psi | 72% | 2884 fps | 98.3% |
| IMR 4895 | <<locked>> | 90% | 55,506 psi | 87% | 3031 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,187 psi | 86% | 2959 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,172 psi | 86% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,608 psi | 87% | 2979 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,651 psi | 87% | 2933 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,318 psi | 88% | 2986 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,390 psi | 87% | 2979 fps | 98.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3015 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 54,476 psi | 85% | 2949 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,114 psi | 86% | 2953 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,826 psi | 89% | 3038 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3041 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 90% | 53,896 psi | 84% | 3009 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,142 psi | 83% | 3035 fps | 98% |
| Ramshot TAC | <<locked>> | 86% | 55,593 psi | 87% | 2976 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,013 psi | 86% | 2995 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,217 psi | 88% | 2963 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,578 psi | 56% | 1873 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,476 psi | 85% | 2936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,535 psi | 87% | 2982 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,360 psi | 85% | 3064 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,143 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 3074 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 3104 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 55,390 psi | 87% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,114 psi | 86% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,363 psi | 90% | 3031 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,172 psi | 85% | 2953 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,390 psi | 87% | 2979 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,608 psi | 87% | 2979 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,318 psi | 88% | 2986 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 3015 fps | 97.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,711 psi | 90% | 2959 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,840 psi | 88% | 3045 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,566 psi | 90% | 2936 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,740 psi | 90% | 3012 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,375 psi | 85% | 2976 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,478 psi | 89% | 2890 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,710 psi | 89% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,869 psi | 88% | 2933 fps | 97.5% |
| Somchem S321 | <<locked>> | 84% | 56,304 psi | 88% | 2992 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,477 psi | 87% | 2884 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 57,087 psi | 89% | 2999 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 57,580 psi | 90% | 3028 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,457 psi | 76% | 2982 fps | 100% |
| Unknown powder | <<locked>> | 98% | 55,535 psi | 87% | 3051 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 84% | 54,911 psi | 86% | 2841 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,869 psi | 88% | 2871 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,795 psi | 86% | 2913 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,882 psi | 86% | 2920 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,434 psi | 87% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,173 psi | 88% | 3022 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 54,824 psi | 86% | 2966 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,650 psi | 86% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,318 psi | 88% | 3071 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,828 psi | 64% | 2844 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,041 psi | 85% | 2966 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,086 psi | 88% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,434 psi | 88% | 3077 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,475 psi | 52% | 2746 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,738 psi | 87% | 3005 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% | 46,949 psi | 74% | 2759 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,576 psi | 81% | 2877 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,117 psi | 61% | 2667 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,063 psi | 71% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 49,008 psi | 77% | 2812 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 37,028 psi | 58% | 2654 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,911 psi | 56% | 2687 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 43,395 psi | 68% | 2785 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 36,767 psi | 58% | 2625 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,542 psi | 71% | 2799 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 45,643 psi | 72% | 2789 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,359 psi | 84% | 3015 fps | 99.9% |
| Alliant Power Pro 2000-MR | 55.6 gr | 80% | 39,421 psi | 62% | 2805 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,216 psi | 57% | 2644 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,895 psi | 83% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,088 psi | 61% | 2713 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,347 psi | 57% | 2707 fps | 95.6% |
| Alliant Reloder-17 | 54.7 gr | 80% | 31,227 psi | 49% | 2595 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,154 psi | 49% | 2592 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 39,088 psi | 61% | 2854 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,554 psi | 67% | 2782 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 35,636 psi | 56% | 2641 fps | 97.8% |
| Bofors RP7 | <<locked>> | 92% | 47,863 psi | 75% | 2841 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,326 psi | 74% | 2789 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,266 psi | 69% | 2815 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,052 psi | 77% | 2966 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 48,240 psi | 76% | 2838 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,680 psi | 57% | 2648 fps | 95% |
| Hodgdon H414 | <<locked>> | 90% | 45,818 psi | 72% | 2894 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 98% | 53,388 psi | 84% | 2979 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 43,816 psi | 69% | 2799 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,009 psi | 49% | 2536 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,347 psi | 59% | 2710 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 94% | 47,964 psi | 75% | 2949 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 41% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,986 psi | 61% | 2680 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 39,682 psi | 62% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,071 psi | 57% | 2602 fps | 96.4% |
| IMR 4166 Enduron | <<locked>> | 88% | 45,963 psi | 72% | 2779 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 53,243 psi | 83% | 2822 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,906 psi | 75% | 2864 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,818 psi | 73% | 2825 fps | 95.4% |
| IMR 4831 | <<locked>> | 92% | 35,520 psi | 56% | 2661 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 40,074 psi | 63% | 2746 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 45,542 psi | 71% | 2799 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 51,459 psi | 81% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,105 psi | 66% | 2759 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,439 psi | 68% | 2720 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 38,290 psi | 60% | 2661 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 40,466 psi | 63% | 2703 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 43,540 psi | 68% | 2789 fps | 95% |
| Norma 201 | <<locked>> | 80% | 42,221 psi | 66% | 2733 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 42,656 psi | 67% | 2746 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,464 psi | 60% | 2700 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 36,448 psi | 57% | 2694 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,058 psi | 60% | 2713 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 43,555 psi | 68% | 2854 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 45,295 psi | 71% | 2795 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,802 psi | 70% | 2818 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,211 psi | 77% | 2848 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,339 psi | 41% | 1673 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,082 psi | 80% | 2884 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,641 psi | 67% | 2753 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,089 psi | 64% | 2818 fps | 97.7% |
| ReloadSwiss RS 60 | 54.7 gr | 80% | 33,301 psi | 52% | 2671 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,795 psi | 56% | 2707 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 38,740 psi | 61% | 2779 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 46,166 psi | 72% | 2782 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,205 psi | 63% | 2684 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 33,518 psi | 53% | 2582 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 47,863 psi | 75% | 2841 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,466 psi | 63% | 2703 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,105 psi | 66% | 2759 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,290 psi | 60% | 2661 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 92% | 43,540 psi | 68% | 2789 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 54,114 psi | 85% | 2907 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,766 psi | 54% | 2638 fps | 96.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,838 psi | 84% | 2884 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,598 psi | 68% | 2769 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,945 psi | 66% | 2753 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,743 psi | 69% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,274 psi | 57% | 2549 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,788 psi | 72% | 2762 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 49,124 psi | 77% | 2877 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,294 psi | 68% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,308 psi | 68% | 2766 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 34,418 psi | 54% | 2592 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 28,369 psi | 44% | 2520 fps | 95.8% |
| Unknown powder | <<locked>> | 88% | 39,784 psi | 62% | 2759 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 48,718 psi | 76% | 2749 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,220 psi | 65% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,566 psi | 62% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,755 psi | 62% | 2667 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,312 psi | 46% | 2441 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 86% | 37,159 psi | 58% | 2674 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 47,790 psi | 75% | 2851 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,436 psi | 62% | 2687 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 37,652 psi | 59% | 2717 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 33,344 psi | 52% | 2671 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,169 psi | 49% | 2500 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 48,718 psi | 76% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,818 psi | 72% | 2894 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,386 psi | 49% | 2674 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,735 psi | 81% | 2943 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 104 powders for .300 WSM loaded with the .306 | 155gr | Fox Classic Hunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,133 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 52–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.306" calls for a 1:11.5 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 .306 | 155gr | 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.