Load Specifications
Load data in caliber .300 WSM with .308 | 125gr | Sierra Tipped MatchKing bullet and 91 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% | 55,622 psi | 87% | 3205 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,302 psi | 85% | 3225 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,421 psi | 90% | 3271 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,362 psi | 88% | 3294 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 56,985 psi | 89% | 3310 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,327 psi | 77% | 3245 fps | 97% |
| Accurate LT-30 | <<locked>> | 82% | 55,013 psi | 86% | 3150 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,405 psi | 87% | 3173 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,781 psi | 86% | 3291 fps | 99% |
| ADI AR 2208 | <<locked>> | 96% | 55,883 psi | 88% | 3284 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 82% | 56,028 psi | 88% | 3278 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,493 psi | 90% | 3301 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 90% | 57,609 psi | 90% | 3287 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,492 psi | 87% | 3366 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,418 psi | 85% | 3406 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,463 psi | 87% | 3310 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,448 psi | 87% | 3219 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,275 psi | 88% | 3333 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,385 psi | 76% | 3251 fps | 97% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,608 psi | 89% | 3435 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,288 psi | 85% | 3133 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,723 psi | 86% | 3297 fps | 98.2% |
| Bofors RP3 | <<locked>> | 96% | 56,173 psi | 88% | 3327 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,202 psi | 88% | 3238 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,043 psi | 89% | 3337 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,853 psi | 86% | 3376 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 84% | 54,708 psi | 86% | 3258 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,999 psi | 88% | 3281 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,566 psi | 90% | 3337 fps | 98% |
| Hodgdon H4895 | <<locked>> | 90% | 55,332 psi | 87% | 3304 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,570 psi | 70% | 3120 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,331 psi | 85% | 3333 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,679 psi | 54% | 2044 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,840 psi | 89% | 3310 fps | 99.5% |
| IMR 3031 | <<locked>> | 90% | 54,810 psi | 86% | 3304 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,405 psi | 87% | 3268 fps | 98.7% |
| IMR 4198 | <<locked>> | 84% | 55,564 psi | 87% | 3179 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,036 psi | 74% | 3179 fps | 96.6% |
| IMR 4895 | <<locked>> | 94% | 57,682 psi | 90% | 3369 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 90% | 57,493 psi | 90% | 3301 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 84% | 54,215 psi | 85% | 3232 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 54,230 psi | 85% | 3271 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,955 psi | 86% | 3219 fps | 99% |
| Lovex S062 | <<locked>> | 94% | 54,853 psi | 86% | 3264 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,128 psi | 85% | 3245 fps | 96.6% |
| Norma 201 | <<locked>> | 92% | 56,942 psi | 89% | 3291 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 57,580 psi | 90% | 3304 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,434 psi | 87% | 3317 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 49,066 psi | 77% | 3238 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 56,101 psi | 88% | 3343 fps | 99.1% |
| Ramshot TAC | <<locked>> | 88% | 54,781 psi | 86% | 3251 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,911 psi | 84% | 3274 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,463 psi | 87% | 3245 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,128 psi | 55% | 2093 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,392 psi | 90% | 3294 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,505 psi | 85% | 3248 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,521 psi | 89% | 3409 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,231 psi | 88% | 3445 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,153 psi | 77% | 3261 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,038 psi | 78% | 3284 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 88% | 54,723 psi | 86% | 3235 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,522 psi | 90% | 3291 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 55,709 psi | 87% | 3310 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,128 psi | 85% | 3245 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,230 psi | 85% | 3271 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,853 psi | 86% | 3264 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,261 psi | 90% | 3258 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,434 psi | 88% | 3287 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,099 psi | 85% | 3317 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,275 psi | 88% | 3245 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,521 psi | 89% | 3284 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,072 psi | 89% | 3317 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,579 psi | 87% | 3186 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,492 psi | 87% | 3179 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,535 psi | 87% | 3284 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 54,694 psi | 86% | 3182 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,956 psi | 88% | 3278 fps | 99% |
| Somchem S355 | <<locked>> | 98% | 56,260 psi | 88% | 3310 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,584 psi | 68% | 3173 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 55,259 psi | 87% | 3159 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,550 psi | 87% | 3173 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,695 psi | 89% | 3261 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,505 psi | 85% | 3222 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,360 psi | 85% | 3235 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 3241 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 88% | 54,621 psi | 86% | 3245 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 94% | 56,478 psi | 89% | 3268 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,720 psi | 79% | 3241 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,779 psi | 83% | 3225 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 54,157 psi | 85% | 3297 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,753 psi | 89% | 3323 fps | 99.5% |
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% | 43,381 psi | 68% | 2995 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,326 psi | 74% | 3104 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 35,955 psi | 56% | 2881 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 42,627 psi | 67% | 3045 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 33,953 psi | 53% | 2851 fps | 98.2% |
| Accurate 4350 | <<locked>> | 96% | 42,844 psi | 67% | 3114 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 51,793 psi | 81% | 3094 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,098 psi | 82% | 3120 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,929 psi | 63% | 2986 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 86% | 41,046 psi | 64% | 2989 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 52,373 psi | 82% | 3219 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,916 psi | 66% | 3005 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 80% | 41,162 psi | 65% | 3022 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,617 psi | 76% | 3238 fps | 98.5% |
| Alliant Power Pro 2000-MR | 62.8 gr | 86% | 44,193 psi | 69% | 3186 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 35,317 psi | 55% | 2887 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,994 psi | 77% | 3114 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,712 psi | 64% | 3022 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,670 psi | 67% | 3120 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 88% | 37,507 psi | 59% | 3022 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,039 psi | 80% | 3081 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,626 psi | 65% | 3035 fps | 95.1% |
| Bofors RP3 | <<locked>> | 82% | 34,896 psi | 55% | 2884 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,801 psi | 69% | 3005 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,408 psi | 63% | 3018 fps | 97.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,179 psi | 69% | 3166 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 80% | 47,761 psi | 75% | 3136 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,660 psi | 76% | 3156 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 44,077 psi | 69% | 3081 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 40,234 psi | 63% | 2999 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,753 psi | 58% | 2933 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,085 psi | 57% | 2943 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,773 psi | 40% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,638 psi | 61% | 2943 fps | 96% |
| IMR 3031 | <<locked>> | 80% | 39,117 psi | 61% | 3012 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 40,350 psi | 63% | 2969 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 49,240 psi | 77% | 3077 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 43,932 psi | 69% | 3117 fps | 95.8% |
| IMR 4895 | <<locked>> | 82% | 39,175 psi | 61% | 2999 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 41,916 psi | 66% | 3005 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 80% | 47,268 psi | 74% | 3107 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 38,566 psi | 60% | 2963 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 40,422 psi | 63% | 2927 fps | 96.1% |
| Lovex S062 | <<locked>> | 80% | 35,317 psi | 55% | 2858 fps | 95.9% |
| Lovex S065 | <<locked>> | 96% | 47,761 psi | 75% | 3123 fps | 95% |
| Norma 201 | <<locked>> | 80% | 39,117 psi | 61% | 2940 fps | 97.1% |
| Norma 202 | <<locked>> | 80% | 39,189 psi | 61% | 2959 fps | 99% |
| Norma 203B | <<locked>> | 82% | 37,608 psi | 59% | 2946 fps | 95.1% |
| Norma URP | <<locked>> | 96% | 42,830 psi | 67% | 3107 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 84% | 39,755 psi | 62% | 3018 fps | 95.6% |
| Ramshot TAC | <<locked>> | 84% | 47,892 psi | 75% | 3120 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,031 psi | 64% | 3015 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,527 psi | 71% | 3058 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,078 psi | 41% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,152 psi | 74% | 3114 fps | 99.5% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 51,111 psi | 80% | 3189 fps | 95% |
| ReloadSwiss RS 52 | 58.1 gr | 82% | 39,668 psi | 62% | 3068 fps | 95% |
| ReloadSwiss RS 60 | 59 gr | 82% | 32,706 psi | 51% | 2894 fps | 95.9% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 45,672 psi | 72% | 3196 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,630 psi | 73% | 3212 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,757 psi | 67% | 3005 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 37,159 psi | 58% | 2881 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 84% | 34,969 psi | 55% | 2881 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 96% | 47,761 psi | 75% | 3123 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,566 psi | 60% | 2963 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 35,317 psi | 55% | 2858 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,908 psi | 78% | 3130 fps | 98.9% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,663 psi | 83% | 3225 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 38,740 psi | 61% | 2999 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,617 psi | 78% | 3136 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 45,905 psi | 72% | 3087 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,522 psi | 60% | 2943 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,625 psi | 64% | 2910 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,446 psi | 52% | 2749 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 45,310 psi | 71% | 3097 fps | 98.7% |
| Somchem S335 | <<locked>> | 80% | 40,219 psi | 63% | 2913 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 39,740 psi | 62% | 2959 fps | 95.7% |
| Somchem S355 | <<locked>> | 84% | 36,056 psi | 56% | 2894 fps | 95.1% |
| Somchem S365 | <<locked>> | 92% | 33,620 psi | 53% | 2917 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 45,977 psi | 72% | 3005 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,756 psi | 64% | 2917 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,143 psi | 57% | 2884 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 37,086 psi | 58% | 2884 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 32,010 psi | 50% | 2762 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 96% | 45,194 psi | 71% | 3117 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 41,901 psi | 66% | 2999 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,752 psi | 56% | 2861 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 96% | 44,396 psi | 70% | 3117 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 37,608 psi | 59% | 2907 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 40,930 psi | 64% | 3038 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,782 psi | 59% | 2943 fps | 95.8% |
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 91 powders for .300 WSM loaded with the .308 | 125gr | Sierra Tipped MatchKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,445 fps; across all powders the maximum-charge window runs from 2,044 fps to 3,445 fps. Accurate 4350 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 | Sierra Tipped MatchKing 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.