Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 125gr | Remington PSP 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 Reloder-16, ReloadSwiss RS 70 and Hodgdon Superformance.
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>> | 82% | 57,174 psi | 90% | 3281 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,072 psi | 89% | 3304 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,376 psi | 87% | 3291 fps | 96.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 3238 fps | 96.8% |
| Accurate 4064 | <<locked>> | 88% | 57,290 psi | 90% | 3360 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,114 psi | 85% | 3386 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 84% | 56,666 psi | 89% | 3389 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 57,711 psi | 90% | 3389 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,390 psi | 87% | 3333 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,768 psi | 89% | 3314 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,116 psi | 90% | 3520 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,882 psi | 86% | 3356 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,187 psi | 86% | 3376 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,998 psi | 86% | 3455 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,579 psi | 89% | 3491 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,498 psi | 71% | 3261 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,286 psi | 82% | 3471 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,724 psi | 89% | 3399 fps | 99.5% |
| Bofors RP3 | <<locked>> | 88% | 55,666 psi | 87% | 3373 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,419 psi | 87% | 3333 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,666 psi | 89% | 3317 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,216 psi | 87% | 3356 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,275 psi | 88% | 3383 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 56,695 psi | 89% | 3438 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 92% | 56,782 psi | 89% | 3399 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 57,276 psi | 90% | 3402 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,158 psi | 86% | 3369 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,522 psi | 90% | 3438 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 57,667 psi | 90% | 3481 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 56% | 2162 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,708 psi | 86% | 3340 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 57,450 psi | 90% | 3386 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,246 psi | 90% | 3373 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,797 psi | 89% | 3343 fps | 97.5% |
| IMR 4350 | <<locked>> | 96% | 56,159 psi | 88% | 3363 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,159 psi | 90% | 3373 fps | 97.5% |
| IMR 4831 | <<locked>> | 96% | 54,723 psi | 86% | 3376 fps | 99.3% |
| IMR 4895 | <<locked>> | 86% | 56,579 psi | 89% | 3415 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 55,390 psi | 87% | 3333 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,058 psi | 89% | 3363 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,521 psi | 87% | 3307 fps | 99.8% |
| Lovex S062 | <<locked>> | 88% | 57,159 psi | 90% | 3366 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,985 psi | 89% | 3366 fps | 98.6% |
| Lovex S070 | <<locked>> | 94% | 54,752 psi | 86% | 3343 fps | 97.3% |
| Norma 201 | <<locked>> | 84% | 55,245 psi | 87% | 3327 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,956 psi | 88% | 3330 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,418 psi | 85% | 3363 fps | 99.7% |
| Norma MRPᴾ | <<locked>> | 100% | 51,387 psi | 81% | 3412 fps | 96.3% |
| Norma URP | <<locked>> | 96% | 56,811 psi | 89% | 3435 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 86% | 55,288 psi | 87% | 3386 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 96% | 55,593 psi | 87% | 3422 fps | 98.2% |
| Ramshot TAC | <<locked>> | 82% | 55,550 psi | 87% | 3340 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,651 psi | 87% | 3366 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 57% | 2208 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,376 psi | 88% | 3360 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,825 psi | 87% | 3451 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,086 psi | 88% | 3494 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,186 psi | 85% | 3402 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,000 psi | 89% | 3504 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 55,898 psi | 88% | 3314 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,796 psi | 87% | 3327 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,680 psi | 87% | 3366 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 55,419 psi | 87% | 3333 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,985 psi | 89% | 3366 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,058 psi | 89% | 3363 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,159 psi | 90% | 3366 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,752 psi | 86% | 3343 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,435 psi | 90% | 3428 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,404 psi | 85% | 3320 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,085 psi | 86% | 3350 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,376 psi | 88% | 3264 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,058 psi | 89% | 3258 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,072 psi | 89% | 3310 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 55,912 psi | 88% | 3258 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,725 psi | 90% | 3373 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 55,637 psi | 87% | 3360 fps | 99.9% |
| Somchem S365 | <<locked>> | 98% | 55,506 psi | 87% | 3438 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 3360 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 56,724 psi | 89% | 3248 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,970 psi | 88% | 3294 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,637 psi | 89% | 3307 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,305 psi | 90% | 3337 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,303 psi | 87% | 3366 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 82% | 55,724 psi | 87% | 3330 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,911 psi | 86% | 3294 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,607 psi | 86% | 3369 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,836 psi | 80% | 3360 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,622 psi | 87% | 3337 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,231 psi | 88% | 3383 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,971 psi | 89% | 3445 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,162 psi | 65% | 3281 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,288 psi | 87% | 3360 fps | 99.9% |
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% | 53,751 psi | 84% | 3225 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,630 psi | 73% | 3133 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,779 psi | 81% | 3228 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 45,266 psi | 71% | 3169 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 44,077 psi | 69% | 3123 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 38,130 psi | 60% | 3041 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,676 psi | 78% | 3261 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 42,177 psi | 66% | 3077 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,750 psi | 81% | 3271 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 52,997 psi | 83% | 3255 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,035 psi | 72% | 3297 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,322 psi | 66% | 3107 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,281 psi | 71% | 3182 fps | 98.2% |
| Alliant Reloder-16 | 70.1 gr | 84% | 37,376 psi | 59% | 3051 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,014 psi | 58% | 3064 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 32,851 psi | 51% | 2933 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 38,798 psi | 61% | 3153 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,588 psi | 78% | 3264 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 42,453 psi | 67% | 3114 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 48,718 psi | 76% | 3205 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,243 psi | 83% | 3258 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,547 psi | 81% | 3294 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,975 psi | 67% | 3114 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 88% | 46,412 psi | 73% | 3235 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 53,084 psi | 83% | 3330 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,227 psi | 79% | 3274 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 32,401 psi | 51% | 2867 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,760 psi | 73% | 3238 fps | 99.5% |
| Hodgdon Superformance | 85.5 gr | 90% | 49,676 psi | 78% | 3327 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 42% | 1936 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,124 psi | 75% | 3215 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 50,343 psi | 79% | 3268 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,324 psi | 69% | 3120 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,789 psi | 73% | 3146 fps | 95.2% |
| IMR 4350 | <<locked>> | 92% | 49,429 psi | 77% | 3238 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 47,355 psi | 74% | 3179 fps | 95.2% |
| IMR 4831 | <<locked>> | 84% | 36,666 psi | 57% | 2986 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 46,456 psi | 73% | 3215 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,750 psi | 81% | 3271 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 49,647 psi | 78% | 3238 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,153 psi | 77% | 3189 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 44,527 psi | 70% | 3127 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 41,597 psi | 65% | 3054 fps | 95.1% |
| Lovex S070 | <<locked>> | 88% | 45,179 psi | 71% | 3153 fps | 95% |
| Norma 201 | <<locked>> | 80% | 48,573 psi | 76% | 3205 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 49,139 psi | 77% | 3212 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,672 psi | 70% | 3166 fps | 98.5% |
| Norma MRP | <<locked>> | 98% | 47,834 psi | 75% | 3337 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 38,000 psi | 60% | 3038 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,817 psi | 70% | 3182 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 45,339 psi | 71% | 3219 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 52,040 psi | 82% | 3274 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,866 psi | 81% | 3297 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 42% | 1982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 46,282 psi | 73% | 3163 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,631 psi | 76% | 3314 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,349 psi | 62% | 3146 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 40,741 psi | 64% | 3123 fps | 96% |
| ReloadSwiss RS 70 | 78.5 gr | 86% | 40,059 psi | 63% | 3130 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 52,649 psi | 83% | 3255 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,369 psi | 73% | 3150 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 39,871 psi | 62% | 3048 fps | 98% |
| Rottweil R 907 | <<locked>> | 88% | 48,718 psi | 76% | 3205 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,597 psi | 65% | 3054 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,647 psi | 78% | 3238 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,527 psi | 70% | 3127 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 88% | 45,179 psi | 71% | 3153 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,002 psi | 64% | 3100 fps | 97.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,589 psi | 79% | 3248 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,356 psi | 76% | 3222 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,588 psi | 78% | 3150 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,669 psi | 65% | 2989 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 46,905 psi | 74% | 3120 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 49,327 psi | 77% | 3146 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,488 psi | 79% | 3245 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 40,335 psi | 63% | 3048 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 29,791 psi | 47% | 2841 fps | 95.5% |
| Somchem S385 | <<locked>> | 98% | 51,184 psi | 80% | 3294 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 50,009 psi | 78% | 3140 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,108 psi | 72% | 3130 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,644 psi | 73% | 3136 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,551 psi | 60% | 2976 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 39,624 psi | 62% | 3045 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 52,243 psi | 82% | 3268 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 45,063 psi | 71% | 3117 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 39,044 psi | 61% | 3038 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 36,187 psi | 57% | 3025 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,287 psi | 54% | 2881 fps | 96.4% |
| Winchester 748 | <<locked>> | 80% | 52,460 psi | 82% | 3317 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 46,412 psi | 73% | 3235 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 33,533 psi | 53% | 3041 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,240 psi | 76% | 3228 fps | 99.4% |
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 Weath. Mag. loaded with the .308 | 125gr | Remington PSP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,520 fps; across all powders the maximum-charge window runs from 2,162 fps to 3,520 fps. Accurate 3100 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 56–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 Reloder-16, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for .300 Weath. Mag. with the .308 | 125gr | Remington PSP 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.