Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 130gr | Speer Hot-Cor bullet and 93 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 Alliant Reloder-17.
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 2495 | <<locked>> | 84% | 54,984 psi | 86% | 3219 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,724 psi | 89% | 3271 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,285 psi | 79% | 3225 fps | 97.6% |
| Accurate 4064 | <<locked>> | 86% | 55,332 psi | 87% | 3274 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,202 psi | 88% | 3369 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 54,549 psi | 85% | 3301 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 55,724 psi | 87% | 3301 fps | 99.7% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 57,595 psi | 90% | 3402 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,739 psi | 89% | 3304 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,868 psi | 86% | 3428 fps | 99.7% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 57,363 psi | 90% | 3396 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,362 psi | 88% | 3330 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,695 psi | 89% | 3353 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,884 psi | 89% | 3435 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,433 psi | 85% | 3402 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,507 psi | 89% | 3383 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,253 psi | 74% | 3251 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 3461 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,476 psi | 85% | 3304 fps | 99.5% |
| Bofors RP3 | <<locked>> | 88% | 57,522 psi | 90% | 3350 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 56,884 psi | 89% | 3314 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,956 psi | 89% | 3333 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 54,172 psi | 85% | 3294 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 92% | 54,766 psi | 86% | 3356 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 90% | 54,737 psi | 86% | 3314 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 82% | 55,158 psi | 86% | 3314 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,217 psi | 90% | 3350 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,332 psi | 87% | 3346 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,405 psi | 87% | 3392 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 56% | 2123 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,304 psi | 88% | 3314 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,506 psi | 87% | 3297 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,259 psi | 87% | 3287 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,563 psi | 86% | 3255 fps | 97.5% |
| IMR 4350 | <<locked>> | 94% | 54,157 psi | 85% | 3281 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,027 psi | 86% | 3287 fps | 97.5% |
| IMR 4831 | <<locked>> | 96% | 56,637 psi | 89% | 3356 fps | 99.6% |
| IMR 4895 | <<locked>> | 84% | 54,563 psi | 86% | 3327 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 56,739 psi | 89% | 3304 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,781 psi | 86% | 3271 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,840 psi | 89% | 3278 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,288 psi | 87% | 3281 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,085 psi | 86% | 3284 fps | 98.7% |
| Lovex S070 | <<locked>> | 94% | 56,260 psi | 88% | 3323 fps | 98% |
| Norma 201 | <<locked>> | 84% | 56,695 psi | 89% | 3297 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,377 psi | 90% | 3301 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,941 psi | 88% | 3337 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 53,417 psi | 84% | 3406 fps | 97.3% |
| Norma URP | <<locked>> | 94% | 54,824 psi | 86% | 3350 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 86% | 56,898 psi | 89% | 3360 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 57,537 psi | 90% | 3406 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 57,130 psi | 90% | 3320 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,130 psi | 90% | 3340 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 57% | 2175 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,331 psi | 85% | 3274 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,882 psi | 84% | 3363 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,896 psi | 84% | 3399 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,999 psi | 88% | 3383 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,795 psi | 86% | 3412 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 82% | 57,479 psi | 90% | 3281 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,464 psi | 90% | 3301 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,348 psi | 90% | 3340 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,753 psi | 87% | 3366 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 92% | 56,884 psi | 89% | 3314 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,085 psi | 86% | 3284 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,781 psi | 86% | 3271 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,288 psi | 87% | 3281 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,260 psi | 88% | 3323 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,434 psi | 87% | 3343 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,869 psi | 88% | 3297 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,739 psi | 89% | 3323 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,682 psi | 90% | 3232 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,027 psi | 86% | 3173 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,868 psi | 86% | 3225 fps | 97.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 3360 fps | 96.2% |
| Somchem S335 | <<locked>> | 84% | 57,276 psi | 90% | 3225 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,492 psi | 87% | 3284 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 57,363 psi | 90% | 3337 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,911 psi | 84% | 3356 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,608 psi | 89% | 3343 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 82% | 54,723 psi | 86% | 3163 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,493 psi | 90% | 3258 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,505 psi | 85% | 3219 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,187 psi | 86% | 3251 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,188 psi | 90% | 3350 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 57,174 psi | 90% | 3301 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,362 psi | 88% | 3264 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,246 psi | 88% | 3350 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 3346 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,217 psi | 90% | 3314 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,969 psi | 86% | 3360 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,641 psi | 67% | 3278 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,840 psi | 89% | 3330 fps | 100% |
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 2495 | <<locked>> | 80% | 48,269 psi | 76% | 3110 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 49,661 psi | 78% | 3136 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 40,843 psi | 64% | 3025 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 45,643 psi | 72% | 3104 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 36,869 psi | 58% | 2959 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 51,213 psi | 80% | 3238 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 43,482 psi | 68% | 3061 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 98% | 53,882 psi | 84% | 3337 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,258 psi | 83% | 3245 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,471 psi | 74% | 3281 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,722 psi | 84% | 3330 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,540 psi | 68% | 3084 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,731 psi | 73% | 3163 fps | 98.8% |
| Alliant Reloder-16 | 68.5 gr | 82% | 36,042 psi | 56% | 2969 fps | 95.3% |
| Alliant Reloder-17 | 72 gr | 80% | 38,203 psi | 60% | 3051 fps | 97.9% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,968 psi | 83% | 3317 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,923 psi | 50% | 2858 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,405 psi | 59% | 3071 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,966 psi | 80% | 3241 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 43,787 psi | 69% | 3094 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 47,123 psi | 74% | 3127 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,026 psi | 83% | 3268 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,411 psi | 70% | 3100 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 86% | 44,686 psi | 70% | 3150 fps | 95% |
| Hodgdon H4350 | <<locked>> | 88% | 51,358 psi | 80% | 3248 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 51,750 psi | 81% | 3251 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,270 psi | 49% | 2789 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,211 psi | 76% | 3215 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 47,616 psi | 75% | 3238 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 42% | 1903 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,356 psi | 77% | 3189 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 52,098 psi | 82% | 3241 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,701 psi | 72% | 3104 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,935 psi | 75% | 3123 fps | 96% |
| IMR 4350 | <<locked>> | 90% | 47,703 psi | 75% | 3153 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,585 psi | 71% | 3097 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 35,433 psi | 56% | 2907 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 47,950 psi | 75% | 3199 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 53,258 psi | 83% | 3245 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,329 psi | 80% | 3212 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,299 psi | 79% | 3159 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 45,788 psi | 72% | 3104 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 40,277 psi | 63% | 2976 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 43,627 psi | 68% | 3071 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,067 psi | 78% | 3182 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 50,473 psi | 79% | 3182 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,122 psi | 72% | 3150 fps | 99% |
| Norma MRP | <<locked>> | 96% | 46,296 psi | 73% | 3258 fps | 95.4% |
| Norma URP | <<locked>> | 82% | 36,724 psi | 58% | 2959 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 46,166 psi | 72% | 3159 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 43,830 psi | 69% | 3136 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 53,330 psi | 84% | 3251 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,447 psi | 84% | 3274 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 43% | 1949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,454 psi | 70% | 3077 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,154 psi | 79% | 3291 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,625 psi | 64% | 3130 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 39,262 psi | 62% | 3041 fps | 95.9% |
| ReloadSwiss RS 70 | 76.8 gr | 84% | 38,580 psi | 60% | 3048 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 53,969 psi | 85% | 3225 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,572 psi | 75% | 3123 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 41,118 psi | 64% | 3028 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 98% | 52,112 psi | 82% | 3301 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 86% | 47,123 psi | 74% | 3127 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,277 psi | 63% | 2976 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,329 psi | 80% | 3212 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,788 psi | 72% | 3104 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 43,627 psi | 68% | 3071 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,279 psi | 66% | 3084 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,199 psi | 82% | 3228 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,690 psi | 78% | 3199 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,792 psi | 80% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,772 psi | 67% | 2959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 45,136 psi | 71% | 3038 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,634 psi | 81% | 3294 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 50,705 psi | 79% | 3120 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,851 psi | 81% | 3219 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 41,684 psi | 65% | 3031 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 30,864 psi | 48% | 2835 fps | 96.6% |
| Somchem S385 | <<locked>> | 96% | 49,429 psi | 77% | 3209 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 51,285 psi | 80% | 3107 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,442 psi | 74% | 3097 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,892 psi | 75% | 3107 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,726 psi | 62% | 2956 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 38,261 psi | 60% | 2963 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 53,563 psi | 84% | 3241 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,470 psi | 73% | 3091 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 37,739 psi | 59% | 2959 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 35,273 psi | 55% | 2953 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,273 psi | 55% | 2867 fps | 97.3% |
| Winchester 760 | <<locked>> | 86% | 44,860 psi | 70% | 3156 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 32,401 psi | 51% | 2963 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,603 psi | 78% | 3202 fps | 99.7% |
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 93 powders for .300 Weath. Mag. loaded with the .308 | 130gr | Speer Hot-Cor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,461 fps; across all powders the maximum-charge window runs from 2,123 fps to 3,461 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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, Alliant Reloder-17 rank at the top here: for .300 Weath. Mag. with the .308 | 130gr | Speer Hot-Cor 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.