Load Specifications
Load data in caliber .300 WSM with .308 | 147gr | Brenneke TUG Nature Plus 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.
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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% | 54,810 psi | 86% | 2956 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,898 psi | 89% | 3031 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 56,376 psi | 88% | 3018 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,638 psi | 90% | 3087 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 54,172 psi | 85% | 2963 fps | 95.7% |
| Accurate 4064 | <<locked>> | 94% | 56,333 psi | 88% | 3068 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,779 psi | 83% | 3091 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 57,406 psi | 90% | 2946 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 57,696 psi | 90% | 3110 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 55,230 psi | 87% | 3048 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,826 psi | 89% | 3061 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 57,319 psi | 90% | 3035 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,027 psi | 86% | 3120 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,954 psi | 85% | 3173 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,868 psi | 86% | 3071 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,462 psi | 85% | 2963 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,579 psi | 87% | 3094 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,242 psi | 80% | 3097 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,985 psi | 88% | 3199 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,187 psi | 57% | 2792 fps | 96.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,971 psi | 89% | 2943 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,143 psi | 85% | 3068 fps | 99.1% |
| Bofors RP3 | <<locked>> | 94% | 55,419 psi | 87% | 3087 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 55,970 psi | 88% | 3051 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,114 psi | 86% | 2992 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,202 psi | 88% | 3091 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,505 psi | 85% | 3136 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 86% | 56,623 psi | 89% | 3045 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 56,869 psi | 89% | 3100 fps | 99% |
| Hodgdon H414 | <<locked>> | 96% | 54,273 psi | 85% | 3117 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 54,708 psi | 86% | 3068 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,137 psi | 74% | 2963 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 53,853 psi | 84% | 3097 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3189 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,969 psi | 55% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,042 psi | 86% | 3051 fps | 99.9% |
| IMR 3031 | <<locked>> | 92% | 56,231 psi | 88% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 57,363 psi | 90% | 3074 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 96% | 56,942 psi | 89% | 3041 fps | 97.2% |
| IMR 4198 | <<locked>> | 82% | 54,781 psi | 86% | 2923 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,620 psi | 82% | 3015 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,563 psi | 86% | 3031 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,266 psi | 69% | 2917 fps | 97.4% |
| IMR 4895 | <<locked>> | 92% | 57,000 psi | 89% | 3130 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 56,826 psi | 89% | 3061 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,029 psi | 89% | 3045 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 57,334 psi | 90% | 3084 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 57,421 psi | 90% | 3035 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 54,317 psi | 85% | 3031 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3077 fps | 98.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 3054 fps | 97% |
| Norma 201 | <<locked>> | 90% | 56,086 psi | 88% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 90% | 56,971 psi | 89% | 3058 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,708 psi | 86% | 3081 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 52,214 psi | 82% | 3081 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 92% | 55,695 psi | 87% | 3110 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,111 psi | 80% | 3068 fps | 97.1% |
| Ramshot TAC | <<locked>> | 88% | 57,421 psi | 90% | 3077 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 56,971 psi | 89% | 3100 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,389 psi | 85% | 3009 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,259 psi | 55% | 1919 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,463 psi | 88% | 3045 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 57,276 psi | 90% | 3081 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,289 psi | 88% | 3169 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,680 psi | 87% | 3202 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 3110 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 3140 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 88% | 56,840 psi | 89% | 3031 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 56,753 psi | 89% | 3048 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,259 psi | 87% | 3077 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 55,970 psi | 88% | 3051 fps | 96.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3077 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 57,334 psi | 90% | 3084 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,317 psi | 85% | 3031 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,418 psi | 85% | 3054 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,115 psi | 88% | 3012 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 57,450 psi | 90% | 3143 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,782 psi | 87% | 2992 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,579 psi | 87% | 3051 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,391 psi | 88% | 3081 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,766 psi | 86% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,781 psi | 86% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,099 psi | 85% | 2969 fps | 96.6% |
| Somchem S321 | <<locked>> | 84% | 54,607 psi | 86% | 3041 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 57,159 psi | 90% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,259 psi | 87% | 3045 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 55,666 psi | 87% | 3074 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,398 psi | 73% | 3022 fps | 99.9% |
| Unknown powderᴾ | <<locked>> | 100% | 57,116 psi | 90% | 3150 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 86% | 56,536 psi | 89% | 2940 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 57,392 psi | 90% | 2969 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,376 psi | 88% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,724 psi | 89% | 3025 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,998 psi | 85% | 3061 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 56,565 psi | 89% | 3068 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,405 psi | 88% | 3051 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,230 psi | 85% | 3114 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,943 psi | 61% | 2874 fps | 96.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3064 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,244 psi | 85% | 3064 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,273 psi | 85% | 3117 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,896 psi | 84% | 3051 fps | 99.8% |
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% | 45,411 psi | 71% | 2808 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,719 psi | 78% | 2923 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,521 psi | 59% | 2707 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,265 psi | 68% | 2854 fps | 99.9% |
| Accurate 2700 | <<locked>> | 92% | 50,836 psi | 80% | 2907 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 35,505 psi | 56% | 2690 fps | 99.5% |
| Accurate 4350 | <<locked>> | 90% | 36,709 psi | 58% | 2772 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 53,867 psi | 84% | 2897 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,901 psi | 66% | 2825 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,534 psi | 56% | 2657 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,048 psi | 69% | 2841 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 43,874 psi | 69% | 2838 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,459 psi | 81% | 3061 fps | 99.7% |
| Alliant Power Pro 2000-MR | 55.9 gr | 80% | 37,971 psi | 60% | 2835 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,882 psi | 55% | 2677 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,227 psi | 80% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,666 psi | 59% | 2746 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,318 psi | 58% | 2795 fps | 95.3% |
| Alliant Reloder-17 | 56.4 gr | 82% | 32,198 psi | 50% | 2684 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,924 psi | 53% | 2733 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,403 psi | 84% | 2890 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,162 psi | 65% | 2822 fps | 96.7% |
| Bofors RP3 | <<locked>> | 80% | 34,156 psi | 54% | 2674 fps | 96.8% |
| Bofors RP7 | <<locked>> | 96% | 52,475 psi | 82% | 2992 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,919 psi | 72% | 2835 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,540 psi | 67% | 2854 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,036 psi | 74% | 3005 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 80% | 46,630 psi | 73% | 2887 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 40,524 psi | 64% | 2802 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 92% | 47,050 psi | 74% | 2986 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 42,293 psi | 66% | 2838 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,865 psi | 50% | 2621 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,868 psi | 56% | 2743 fps | 97.3% |
| Hodgdon Superformance | <<locked>> | 96% | 49,748 psi | 78% | 3051 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 41% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,681 psi | 59% | 2720 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 37,913 psi | 59% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,853 psi | 55% | 2638 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 90% | 47,427 psi | 74% | 2874 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 51,547 psi | 81% | 2877 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,356 psi | 77% | 2959 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,167 psi | 75% | 2917 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 36,318 psi | 57% | 2746 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 38,580 psi | 60% | 2782 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 44,048 psi | 69% | 2841 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 49,588 psi | 78% | 2930 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,654 psi | 64% | 2802 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 42,148 psi | 66% | 2762 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 36,927 psi | 58% | 2700 fps | 97.9% |
| Lovex S065 | <<locked>> | 90% | 41,524 psi | 65% | 2795 fps | 95% |
| Lovex S070 | <<locked>> | 96% | 47,848 psi | 75% | 2940 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 40,785 psi | 64% | 2772 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 41,162 psi | 65% | 2789 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 37,014 psi | 58% | 2736 fps | 96.6% |
| Norma URP | <<locked>> | 90% | 37,318 psi | 58% | 2782 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,521 psi | 57% | 2743 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 44,701 psi | 70% | 2946 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 44,019 psi | 69% | 2838 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,381 psi | 68% | 2861 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,601 psi | 75% | 2890 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,121 psi | 41% | 1716 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,429 psi | 77% | 2933 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,905 psi | 74% | 2900 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,305 psi | 62% | 2851 fps | 96.7% |
| ReloadSwiss RS 60 | 55 gr | 80% | 32,010 psi | 50% | 2694 fps | 97.6% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 39,421 psi | 62% | 2858 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,931 psi | 67% | 2940 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 44,469 psi | 70% | 2825 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,841 psi | 61% | 2723 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 32,140 psi | 50% | 2612 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 96% | 52,475 psi | 82% | 2992 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,524 psi | 65% | 2795 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,654 psi | 64% | 2802 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 36,927 psi | 58% | 2700 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 96% | 47,848 psi | 75% | 2940 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,330 psi | 82% | 2953 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,446 psi | 52% | 2667 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,170 psi | 82% | 2936 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,003 psi | 66% | 2802 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,495 psi | 63% | 2789 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,409 psi | 66% | 2740 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,056 psi | 55% | 2592 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,311 psi | 74% | 2854 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 47,616 psi | 75% | 2923 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,916 psi | 66% | 2736 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,887 psi | 66% | 2805 fps | 97.8% |
| Somchem S355 | <<locked>> | 80% | 33,112 psi | 52% | 2625 fps | 95.8% |
| Somchem S365 | <<locked>> | 86% | 29,037 psi | 46% | 2598 fps | 95.4% |
| Unknown powder | <<locked>> | 90% | 40,799 psi | 64% | 2848 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 47,050 psi | 74% | 2799 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,943 psi | 63% | 2687 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,087 psi | 60% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,348 psi | 60% | 2710 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 28,181 psi | 44% | 2470 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 88% | 38,305 psi | 60% | 2762 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 46,427 psi | 73% | 2897 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,014 psi | 60% | 2726 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 38,696 psi | 61% | 2808 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 98% | 36,347 psi | 57% | 2812 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,285 psi | 51% | 2589 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 47,123 psi | 74% | 2946 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 47,050 psi | 74% | 2986 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,024 psi | 78% | 2989 fps | 99.6% |
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 116 powders for .300 WSM loaded with the .308 | 147gr | Brenneke TUG Nature Plus. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,202 fps. Accurate 3100 gives the best case fill at 100 %, and 116 of the 116 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 147.0 gr projectile in 0.308" calls for a 1:11.0 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 147gr | Brenneke TUG Nature Plus 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.