Load Specifications
Load data in caliber .300 WSM with .308 | 125gr | Hornady SST bullet and 92 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 ReloadSwiss RS 52.
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>> | 88% | 56,855 psi | 89% | 3228 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,448 psi | 87% | 3248 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,100 psi | 86% | 3241 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,435 psi | 90% | 3314 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 54,679 psi | 86% | 3281 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,821 psi | 80% | 3278 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 82% | 55,666 psi | 87% | 3166 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,057 psi | 88% | 3192 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,130 psi | 88% | 3320 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 96% | 57,043 psi | 89% | 3310 fps | 98.9% |
| ADI AR 2219 | <<locked>> | 82% | 57,014 psi | 89% | 3301 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,201 psi | 87% | 3271 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 88% | 55,390 psi | 87% | 3261 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,768 psi | 89% | 3396 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,854 psi | 88% | 3438 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,753 psi | 89% | 3340 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,289 psi | 88% | 3235 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,580 psi | 90% | 3363 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 3278 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,983 psi | 85% | 3396 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,230 psi | 87% | 3153 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,144 psi | 88% | 3330 fps | 98.5% |
| Bofors RP3 | <<locked>> | 96% | 57,450 psi | 90% | 3353 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,029 psi | 89% | 3258 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,433 psi | 85% | 3297 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,202 psi | 88% | 3402 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 84% | 55,709 psi | 87% | 3281 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,058 psi | 89% | 3304 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,042 psi | 86% | 3301 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 90% | 56,637 psi | 89% | 3333 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,614 psi | 71% | 3150 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,608 psi | 87% | 3360 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,882 psi | 55% | 2057 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,520 psi | 85% | 3278 fps | 99.3% |
| IMR 3031 | <<locked>> | 90% | 55,869 psi | 88% | 3323 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,391 psi | 88% | 3294 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,043 psi | 89% | 3264 fps | 95.8% |
| IMR 4198 | <<locked>> | 84% | 56,405 psi | 88% | 3199 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,138 psi | 75% | 3209 fps | 97% |
| IMR 4895 | <<locked>> | 92% | 55,317 psi | 87% | 3337 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 88% | 55,201 psi | 87% | 3271 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 84% | 55,317 psi | 87% | 3255 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 55,608 psi | 87% | 3297 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,724 psi | 87% | 3241 fps | 99.2% |
| Lovex S062 | <<locked>> | 94% | 56,115 psi | 88% | 3294 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,230 psi | 87% | 3271 fps | 96.9% |
| Norma 201 | <<locked>> | 90% | 54,679 psi | 86% | 3261 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 55,056 psi | 86% | 3268 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,652 psi | 89% | 3346 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 50,154 psi | 79% | 3268 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 94% | 57,261 psi | 90% | 3369 fps | 99.3% |
| Ramshot TAC | <<locked>> | 88% | 55,898 psi | 88% | 3278 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,129 psi | 86% | 3304 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,391 psi | 88% | 3268 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,114 psi | 55% | 2100 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,621 psi | 86% | 3255 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,593 psi | 87% | 3274 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,925 psi | 85% | 3369 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,609 psi | 90% | 3474 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,444 psi | 79% | 3294 fps | 97.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,126 psi | 80% | 3317 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 88% | 55,651 psi | 87% | 3255 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,230 psi | 87% | 3258 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 98% | 56,985 psi | 89% | 3337 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,230 psi | 87% | 3271 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,608 psi | 87% | 3297 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,115 psi | 88% | 3294 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,404 psi | 85% | 3219 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,537 psi | 90% | 3310 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,259 psi | 87% | 3343 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,406 psi | 90% | 3264 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 57,711 psi | 90% | 3310 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,462 psi | 85% | 3281 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,463 psi | 88% | 3205 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,507 psi | 89% | 3199 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 56,550 psi | 89% | 3307 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 55,738 psi | 87% | 3202 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,377 psi | 90% | 3307 fps | 99.3% |
| Somchem S355 | <<locked>> | 98% | 57,508 psi | 90% | 3337 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,831 psi | 70% | 3205 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 86% | 56,217 psi | 88% | 3176 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,449 psi | 88% | 3192 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,447 psi | 85% | 3232 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,840 psi | 88% | 3248 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,535 psi | 87% | 3261 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 3271 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 88% | 55,680 psi | 87% | 3271 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 94% | 57,653 psi | 90% | 3294 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 3271 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,114 psi | 85% | 3255 fps | 99.5% |
| Winchester 748 | <<locked>> | 88% | 55,187 psi | 86% | 3320 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,317 psi | 85% | 3291 fps | 99.4% |
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% | 44,135 psi | 69% | 3015 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,472 psi | 76% | 3130 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 36,724 psi | 58% | 2900 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,482 psi | 68% | 3068 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 34,722 psi | 54% | 2877 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 44,048 psi | 69% | 3143 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 52,460 psi | 82% | 3114 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,837 psi | 83% | 3140 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,770 psi | 64% | 3009 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 41,829 psi | 66% | 3012 fps | 95.8% |
| ADI AR 2219 | <<locked>> | 80% | 53,403 psi | 84% | 3241 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,772 psi | 67% | 3031 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 42,032 psi | 66% | 3041 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,690 psi | 78% | 3264 fps | 98.8% |
| Alliant Power Pro 2000-MR | 62.6 gr | 84% | 42,250 psi | 66% | 3146 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,129 psi | 57% | 2913 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,806 psi | 78% | 3133 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 39,059 psi | 61% | 2986 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,627 psi | 68% | 3150 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 38,435 psi | 60% | 3054 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,779 psi | 81% | 3097 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,554 psi | 67% | 3064 fps | 95.5% |
| Bofors RP3 | <<locked>> | 82% | 35,694 psi | 56% | 2910 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,599 psi | 70% | 3028 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,176 psi | 65% | 3038 fps | 98.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,252 psi | 71% | 3192 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 80% | 48,762 psi | 76% | 3163 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,763 psi | 78% | 3182 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 45,005 psi | 71% | 3107 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 41,075 psi | 64% | 3025 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 37,536 psi | 59% | 2963 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,999 psi | 58% | 2972 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,918 psi | 41% | 1841 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,450 psi | 62% | 2969 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 40,161 psi | 63% | 3038 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 38,696 psi | 61% | 2933 fps | 95% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,577 psi | 84% | 3205 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 50,096 psi | 79% | 3097 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 42,076 psi | 66% | 3081 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 37,434 psi | 59% | 2959 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 42,772 psi | 67% | 3031 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 48,138 psi | 75% | 3130 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 39,450 psi | 62% | 2989 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 41,002 psi | 64% | 2946 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 35,984 psi | 56% | 2877 fps | 96.2% |
| Lovex S065 | <<locked>> | 96% | 48,878 psi | 77% | 3153 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 39,784 psi | 62% | 2959 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 40,103 psi | 63% | 2986 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 38,392 psi | 60% | 2972 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 43,859 psi | 69% | 3136 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 82% | 37,927 psi | 59% | 2979 fps | 95.1% |
| Ramshot TAC | <<locked>> | 84% | 48,950 psi | 77% | 3150 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,959 psi | 66% | 3041 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,267 psi | 73% | 3081 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,049 psi | 41% | 1883 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,037 psi | 75% | 3136 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 51,895 psi | 81% | 3209 fps | 95.4% |
| ReloadSwiss RS 52 | 59.2 gr | 82% | 40,553 psi | 64% | 3094 fps | 95.5% |
| ReloadSwiss RS 60 | 58.7 gr | 80% | 31,241 psi | 49% | 2851 fps | 95.2% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,874 psi | 69% | 3159 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 47,674 psi | 75% | 3241 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 43,714 psi | 69% | 3031 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 37,985 psi | 60% | 2907 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 84% | 35,766 psi | 56% | 2907 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 48,878 psi | 77% | 3153 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,450 psi | 62% | 2989 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 35,984 psi | 56% | 2877 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,734 psi | 80% | 3153 fps | 99.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,766 psi | 84% | 3248 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 39,610 psi | 62% | 3025 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,459 psi | 79% | 3156 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 46,847 psi | 73% | 3114 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,262 psi | 62% | 2966 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,307 psi | 65% | 2933 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,098 psi | 53% | 2769 fps | 98.9% |
| Somchem S321 | <<locked>> | 80% | 46,122 psi | 72% | 3117 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 40,857 psi | 64% | 2933 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 40,466 psi | 63% | 2982 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 36,811 psi | 58% | 2920 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 32,198 psi | 50% | 2877 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 46,760 psi | 73% | 3025 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,495 psi | 65% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,883 psi | 58% | 2904 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,913 psi | 59% | 2907 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 32,750 psi | 51% | 2785 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 94% | 43,308 psi | 68% | 3081 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 42,743 psi | 67% | 3025 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,492 psi | 57% | 2887 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 45,440 psi | 71% | 3143 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,926 psi | 56% | 2871 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 42,018 psi | 66% | 3068 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,522 psi | 60% | 2969 fps | 96.3% |
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 92 powders for .300 WSM loaded with the .308 | 125gr | Hornady SST. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,474 fps; across all powders the maximum-charge window runs from 2,057 fps to 3,474 fps. Accurate 4350 gives the best case fill at 100 %, and 92 of the 92 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 125.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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, ReloadSwiss RS 52 rank at the top here: for .300 WSM with the .308 | 125gr | Hornady SST 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.