Load Specifications
Load data in caliber .300 WSM with .310 | 123gr | Hornady SST bullet and 90 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% | 55,796 psi | 87% | 3235 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,418 psi | 85% | 3255 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,464 psi | 90% | 3297 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,362 psi | 88% | 3320 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 57,217 psi | 90% | 3343 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,516 psi | 78% | 3274 fps | 97% |
| Accurate LT-30 | <<locked>> | 82% | 55,042 psi | 86% | 3176 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,419 psi | 87% | 3202 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,085 psi | 86% | 3323 fps | 99% |
| ADI AR 2208 | <<locked>> | 96% | 56,130 psi | 88% | 3314 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 82% | 56,246 psi | 88% | 3310 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,244 psi | 85% | 3274 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 88% | 54,201 psi | 85% | 3268 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,666 psi | 87% | 3396 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,592 psi | 86% | 3435 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,419 psi | 87% | 3337 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,492 psi | 87% | 3248 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,260 psi | 88% | 3360 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,486 psi | 76% | 3274 fps | 96.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,623 psi | 89% | 3461 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,389 psi | 85% | 3159 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,940 psi | 86% | 3327 fps | 98.2% |
| Bofors RP3 | <<locked>> | 96% | 56,086 psi | 88% | 3350 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,115 psi | 88% | 3261 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,014 psi | 89% | 3363 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,100 psi | 86% | 3406 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 84% | 54,650 psi | 86% | 3284 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,072 psi | 88% | 3310 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,099 psi | 85% | 3304 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 90% | 55,637 psi | 87% | 3337 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,541 psi | 70% | 3143 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,578 psi | 86% | 3363 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,664 psi | 54% | 2064 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,913 psi | 89% | 3337 fps | 99.4% |
| IMR 3031 | <<locked>> | 90% | 54,708 psi | 86% | 3330 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,434 psi | 87% | 3297 fps | 98.7% |
| IMR 4198 | <<locked>> | 84% | 55,637 psi | 87% | 3209 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,166 psi | 74% | 3205 fps | 96.5% |
| IMR 4895 | <<locked>> | 94% | 57,667 psi | 90% | 3399 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 88% | 54,244 psi | 85% | 3274 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 84% | 54,273 psi | 85% | 3258 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 54,476 psi | 85% | 3301 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,071 psi | 86% | 3248 fps | 99% |
| Lovex S062 | <<locked>> | 94% | 55,129 psi | 86% | 3297 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,317 psi | 85% | 3271 fps | 96.5% |
| Norma 201 | <<locked>> | 92% | 57,305 psi | 90% | 3323 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 57,696 psi | 90% | 3330 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,405 psi | 87% | 3346 fps | 99% |
| Norma URPᴾ | <<locked>> | 100% | 48,950 psi | 77% | 3261 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 94% | 56,275 psi | 88% | 3373 fps | 99% |
| Ramshot TAC | <<locked>> | 88% | 54,969 psi | 86% | 3278 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,725 psi | 90% | 3363 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,506 psi | 87% | 3271 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,085 psi | 55% | 2113 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,232 psi | 90% | 3317 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,507 psi | 89% | 3432 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 56,333 psi | 88% | 3471 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 3287 fps | 96.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,038 psi | 78% | 3307 fps | 96% |
| Rottweil R 901 | <<locked>> | 88% | 54,621 psi | 86% | 3258 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,595 psi | 90% | 3317 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 55,941 psi | 88% | 3340 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,317 psi | 85% | 3271 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,476 psi | 85% | 3301 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,129 psi | 86% | 3297 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,334 psi | 90% | 3284 fps | 99.6% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,536 psi | 89% | 3314 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,259 psi | 85% | 3346 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 56,289 psi | 88% | 3271 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,724 psi | 89% | 3314 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,014 psi | 89% | 3343 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,738 psi | 87% | 3215 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,550 psi | 87% | 3205 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,593 psi | 87% | 3310 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 54,810 psi | 86% | 3209 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,101 psi | 88% | 3307 fps | 99% |
| Somchem S355 | <<locked>> | 98% | 56,217 psi | 88% | 3337 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,714 psi | 69% | 3199 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 86% | 55,274 psi | 87% | 3186 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,709 psi | 87% | 3205 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,797 psi | 89% | 3287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,534 psi | 85% | 3245 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,578 psi | 86% | 3264 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,692 psi | 81% | 3268 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 88% | 54,708 psi | 86% | 3274 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 94% | 56,695 psi | 89% | 3297 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,821 psi | 80% | 3268 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,026 psi | 83% | 3251 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 54,157 psi | 85% | 3323 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 56,898 psi | 89% | 3353 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% | 43,410 psi | 68% | 3022 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,485 psi | 74% | 3133 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 36,013 psi | 56% | 2904 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 42,554 psi | 67% | 3068 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 34,040 psi | 53% | 2877 fps | 98.1% |
| Accurate 4350 | <<locked>> | 96% | 42,830 psi | 67% | 3136 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 51,561 psi | 81% | 3120 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,938 psi | 81% | 3143 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 39,943 psi | 63% | 3009 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 86% | 41,046 psi | 64% | 3012 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 52,359 psi | 82% | 3245 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,959 psi | 66% | 3031 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 41,234 psi | 65% | 3048 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,631 psi | 76% | 3264 fps | 98.4% |
| Alliant Power Pro 2000-MR | 63.7 gr | 86% | 44,440 psi | 70% | 3219 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 35,505 psi | 56% | 2913 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,052 psi | 77% | 3143 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,857 psi | 64% | 3048 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,859 psi | 67% | 3146 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 88% | 37,681 psi | 59% | 3048 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,966 psi | 80% | 3107 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,713 psi | 65% | 3061 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 34,896 psi | 55% | 2907 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,034 psi | 69% | 3035 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,364 psi | 63% | 3041 fps | 97.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,309 psi | 69% | 3189 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 80% | 47,819 psi | 75% | 3166 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,849 psi | 77% | 3186 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 47,123 psi | 74% | 3169 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 40,234 psi | 63% | 3025 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,796 psi | 58% | 2959 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,216 psi | 57% | 2969 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,686 psi | 40% | 1847 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,696 psi | 61% | 2966 fps | 95.9% |
| IMR 3031 | <<locked>> | 80% | 39,175 psi | 61% | 3035 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 40,509 psi | 63% | 2995 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 49,400 psi | 77% | 3110 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 44,048 psi | 69% | 3143 fps | 95.7% |
| IMR 4895 | <<locked>> | 82% | 39,146 psi | 61% | 3022 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 41,959 psi | 66% | 3031 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 80% | 47,442 psi | 74% | 3136 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 38,551 psi | 60% | 2986 fps | 98.3% |
| Lovex S060 | <<locked>> | 80% | 40,466 psi | 63% | 2953 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 35,360 psi | 55% | 2881 fps | 95.8% |
| Lovex S065 | <<locked>> | 96% | 47,964 psi | 75% | 3150 fps | 95% |
| Norma 201 | <<locked>> | 80% | 39,146 psi | 61% | 2963 fps | 97% |
| Norma 202 | <<locked>> | 80% | 39,262 psi | 62% | 2982 fps | 99% |
| Norma 203B | <<locked>> | 82% | 37,608 psi | 59% | 2972 fps | 95% |
| Norma URP | <<locked>> | 96% | 43,004 psi | 67% | 3133 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 84% | 39,842 psi | 62% | 3041 fps | 95.5% |
| Ramshot TAC | <<locked>> | 84% | 48,138 psi | 75% | 3150 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,191 psi | 65% | 3041 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,658 psi | 72% | 3087 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,976 psi | 41% | 1893 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,137 psi | 74% | 3140 fps | 99.5% |
| ReloadSwiss RS 52 | 58.9 gr | 82% | 39,813 psi | 62% | 3094 fps | 95% |
| ReloadSwiss RS 60 | 59.8 gr | 82% | 32,793 psi | 51% | 2920 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 45,948 psi | 72% | 3222 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,847 psi | 73% | 3238 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,859 psi | 67% | 3035 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 37,217 psi | 58% | 2907 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 37,420 psi | 59% | 2966 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 47,964 psi | 75% | 3150 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,551 psi | 60% | 2986 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 35,360 psi | 55% | 2881 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,850 psi | 78% | 3156 fps | 98.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,852 psi | 83% | 3251 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 38,812 psi | 61% | 3022 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,734 psi | 78% | 3163 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 45,948 psi | 72% | 3114 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,508 psi | 60% | 2966 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,727 psi | 64% | 2936 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,533 psi | 53% | 2776 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 45,237 psi | 71% | 3117 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 40,277 psi | 63% | 2940 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 39,653 psi | 62% | 2979 fps | 95.5% |
| Somchem S355 | <<locked>> | 84% | 36,042 psi | 56% | 2913 fps | 95% |
| Somchem S365 | <<locked>> | 92% | 33,678 psi | 53% | 2940 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 46,079 psi | 72% | 3031 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,857 psi | 64% | 2943 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,216 psi | 57% | 2910 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 37,101 psi | 58% | 2907 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 82% | 32,169 psi | 50% | 2785 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 96% | 45,179 psi | 71% | 3140 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 41,930 psi | 66% | 3025 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 80% | 35,766 psi | 56% | 2884 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 96% | 44,527 psi | 70% | 3140 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 37,739 psi | 59% | 2930 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 41,104 psi | 64% | 3068 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,753 psi | 59% | 2966 fps | 95.7% |
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 90 powders for .300 WSM loaded with the .310 | 123gr | Hornady SST. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,471 fps; across all powders the maximum-charge window runs from 2,064 fps to 3,471 fps. Accurate 4350 gives the best case fill at 100 %, and 90 of the 90 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 123.0 gr projectile in 0.31" calls for a 1:15.5 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 .310 | 123gr | 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.