Load Specifications
Load data in caliber .300 WSM with .308 | 120gr | Frontier BTSP 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% | 55,376 psi | 87% | 3264 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 57,725 psi | 90% | 3343 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 57,072 psi | 89% | 3333 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,085 psi | 85% | 3330 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 56,811 psi | 89% | 3376 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 3304 fps | 96.7% |
| Accurate LT-30 | <<locked>> | 82% | 54,752 psi | 86% | 3212 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,129 psi | 86% | 3235 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,563 psi | 86% | 3353 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 96% | 55,782 psi | 87% | 3346 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 82% | 55,738 psi | 87% | 3343 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 57,246 psi | 90% | 3366 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 90% | 57,479 psi | 90% | 3356 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,172 psi | 86% | 3428 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,418 psi | 85% | 3465 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,085 psi | 86% | 3369 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,158 psi | 86% | 3284 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,854 psi | 88% | 3389 fps | 98.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,138 psi | 75% | 3304 fps | 96.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,289 psi | 88% | 3491 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 57,725 psi | 90% | 3248 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,491 psi | 85% | 3356 fps | 97.9% |
| Bofors RP3 | <<locked>> | 96% | 55,883 psi | 88% | 3386 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,912 psi | 88% | 3297 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 90% | 56,797 psi | 89% | 3396 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,665 psi | 86% | 3438 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 88% | 57,101 psi | 89% | 3363 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,259 psi | 87% | 3333 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 57,319 psi | 90% | 3396 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 82% | 56,420 psi | 88% | 3268 fps | 100% |
| Hodgdon H4895 | <<locked>> | 90% | 55,042 psi | 86% | 3366 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,353 psi | 70% | 3173 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 57,740 psi | 90% | 3455 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,722 psi | 54% | 2096 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,288 psi | 87% | 3346 fps | 99.2% |
| IMR 3031 | <<locked>> | 94% | 55,999 psi | 88% | 3389 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 57,406 psi | 90% | 3366 fps | 98.8% |
| IMR 4198 | <<locked>> | 84% | 55,129 psi | 86% | 3241 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 57,246 psi | 90% | 3428 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 90% | 57,246 psi | 90% | 3366 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 84% | 53,998 psi | 85% | 3291 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 90% | 54,085 psi | 85% | 3330 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,621 psi | 86% | 3278 fps | 98.8% |
| Lovex S062 | <<locked>> | 94% | 54,549 psi | 85% | 3327 fps | 99.6% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,882 psi | 84% | 3297 fps | 96.2% |
| Norma 201 | <<locked>> | 92% | 56,724 psi | 89% | 3353 fps | 99.7% |
| Norma 202 | <<locked>> | 92% | 57,319 psi | 90% | 3366 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,013 psi | 86% | 3376 fps | 98.9% |
| Norma URPᴾ | <<locked>> | 100% | 48,704 psi | 76% | 3294 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 94% | 55,680 psi | 87% | 3399 fps | 98.9% |
| Ramshot TAC | <<locked>> | 88% | 54,592 psi | 86% | 3310 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 90% | 57,566 psi | 90% | 3399 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,172 psi | 86% | 3304 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,911 psi | 55% | 2142 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,014 psi | 89% | 3356 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,014 psi | 88% | 3465 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,999 psi | 88% | 3504 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,849 psi | 77% | 3317 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 90% | 57,711 psi | 90% | 3346 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 57,261 psi | 90% | 3353 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 98% | 55,419 psi | 87% | 3369 fps | 99.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,882 psi | 84% | 3297 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,085 psi | 85% | 3330 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,549 psi | 85% | 3327 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,043 psi | 89% | 3320 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,318 psi | 88% | 3350 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 57,624 psi | 90% | 3442 fps | 99.1% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,927 psi | 88% | 3304 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,304 psi | 88% | 3343 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 56,608 psi | 89% | 3373 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,288 psi | 87% | 3248 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,230 psi | 87% | 3238 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,172 psi | 86% | 3343 fps | 99.7% |
| Somchem S335 | <<locked>> | 90% | 54,563 psi | 86% | 3245 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,709 psi | 87% | 3337 fps | 98.9% |
| Somchem S355 | <<locked>> | 98% | 56,072 psi | 88% | 3373 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,482 psi | 68% | 3232 fps | 98.6% |
| Unknown powderᴾ | <<locked>> | 100% | 53,534 psi | 84% | 3373 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 82% | 55,796 psi | 87% | 3169 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 57,174 psi | 90% | 3255 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 57,624 psi | 90% | 3278 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 56,507 psi | 89% | 3323 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 56,826 psi | 89% | 3323 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 3235 fps | 99.4% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 3340 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 88% | 57,276 psi | 90% | 3379 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 94% | 56,956 psi | 89% | 3356 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3396 fps | 97.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,678 psi | 83% | 3281 fps | 99.1% |
| Winchester 748 | <<locked>> | 86% | 54,534 psi | 85% | 3366 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,679 psi | 86% | 3353 fps | 99.2% |
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% | 43,178 psi | 68% | 3051 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,108 psi | 74% | 3163 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 35,723 psi | 56% | 2930 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 40,901 psi | 64% | 3077 fps | 98.7% |
| Accurate 4064 | <<locked>> | 80% | 33,736 psi | 53% | 2900 fps | 97.9% |
| Accurate 4350 | <<locked>> | 98% | 45,788 psi | 72% | 3235 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 80% | 51,343 psi | 80% | 3153 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,706 psi | 81% | 3179 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 39,668 psi | 62% | 3035 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 88% | 43,381 psi | 68% | 3100 fps | 95.8% |
| ADI AR 2219 | <<locked>> | 80% | 51,938 psi | 81% | 3278 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,669 psi | 65% | 3061 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 80% | 40,944 psi | 64% | 3077 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,269 psi | 76% | 3294 fps | 98.2% |
| Alliant Power Pro 2000-MR | 64.4 gr | 86% | 44,179 psi | 69% | 3245 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 35,201 psi | 55% | 2940 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,573 psi | 76% | 3173 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,509 psi | 63% | 3074 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 98% | 45,353 psi | 71% | 3241 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 39,900 psi | 63% | 3140 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,807 psi | 80% | 3140 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 44,425 psi | 70% | 3156 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 37,144 psi | 58% | 2999 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,772 psi | 69% | 3068 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,147 psi | 63% | 3071 fps | 97.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,034 psi | 69% | 3222 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 80% | 44,150 psi | 69% | 3133 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 51,358 psi | 80% | 3271 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 46,818 psi | 73% | 3199 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 53,113 psi | 83% | 3212 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 39,929 psi | 63% | 3051 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 38,870 psi | 61% | 3045 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 36,245 psi | 57% | 3005 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,643 psi | 40% | 1873 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 37,869 psi | 59% | 2982 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 35,520 psi | 56% | 2986 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 42,351 psi | 66% | 3074 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 48,965 psi | 77% | 3140 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 38,812 psi | 61% | 3048 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 41,669 psi | 65% | 3061 fps | 97.4% |
| Lovex D073.5 | <<locked>> | 80% | 47,007 psi | 74% | 3163 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 38,203 psi | 60% | 3015 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 40,248 psi | 63% | 2982 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 35,143 psi | 55% | 2907 fps | 95.5% |
| Lovex S065 | <<locked>> | 98% | 50,749 psi | 80% | 3241 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 38,899 psi | 61% | 2992 fps | 96.7% |
| Norma 202 | <<locked>> | 80% | 38,972 psi | 61% | 3012 fps | 98.8% |
| Norma 203B | <<locked>> | 84% | 39,842 psi | 62% | 3061 fps | 95.5% |
| Norma URP | <<locked>> | 98% | 45,556 psi | 71% | 3225 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 84% | 39,595 psi | 62% | 3071 fps | 95.2% |
| Ramshot TAC | <<locked>> | 86% | 50,908 psi | 80% | 3241 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,973 psi | 64% | 3071 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,281 psi | 71% | 3114 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,918 psi | 41% | 1919 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,789 psi | 73% | 3169 fps | 99.4% |
| ReloadSwiss RS 52 | 60.9 gr | 84% | 42,177 psi | 66% | 3186 fps | 95.5% |
| ReloadSwiss RS 60 | 60.4 gr | 82% | 32,518 psi | 51% | 2940 fps | 95.4% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 45,455 psi | 71% | 3245 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 42,627 psi | 67% | 3064 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 80% | 36,985 psi | 58% | 2936 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 86% | 37,202 psi | 58% | 2995 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 50,749 psi | 80% | 3241 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,203 psi | 60% | 3015 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 35,143 psi | 55% | 2907 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,690 psi | 78% | 3189 fps | 98.7% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,634 psi | 82% | 3291 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,133 psi | 64% | 3114 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,429 psi | 77% | 3199 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 45,701 psi | 72% | 3140 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 40,901 psi | 64% | 3058 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,495 psi | 63% | 2966 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,344 psi | 52% | 2802 fps | 98.4% |
| Somchem S321 | <<locked>> | 80% | 45,020 psi | 71% | 3150 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 39,987 psi | 63% | 2966 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 39,479 psi | 62% | 3009 fps | 95.3% |
| Somchem S355 | <<locked>> | 86% | 38,159 psi | 60% | 3002 fps | 95.6% |
| Somchem S365 | <<locked>> | 92% | 33,388 psi | 52% | 2963 fps | 95.1% |
| Unknown powder | <<locked>> | 96% | 46,688 psi | 73% | 3238 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 52,533 psi | 82% | 3123 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 44,773 psi | 70% | 3048 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,811 psi | 59% | 2917 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 35,955 psi | 56% | 2936 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 36,303 psi | 57% | 2923 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 86% | 32,387 psi | 51% | 2828 fps | 95% |
| Vihtavuori N160 | <<locked>> | 94% | 44,092 psi | 69% | 3146 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 43,743 psi | 69% | 3123 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 36,042 psi | 56% | 2936 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 94% | 44,454 psi | 70% | 3199 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 37,449 psi | 59% | 2956 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 44,150 psi | 69% | 3169 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,934 psi | 74% | 3209 fps | 98% |
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 110 powders for .300 WSM loaded with the .308 | 120gr | Frontier BTSP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,504 fps; across all powders the maximum-charge window runs from 2,096 fps to 3,504 fps. Accurate 4350 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 120.0 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, 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 | 120gr | Frontier BTSP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 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.