Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 145gr | CutEdge ESP Raptor 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 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 2495 | <<locked>> | 84% | 55,941 psi | 88% | 3081 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,418 psi | 85% | 3094 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,634 psi | 81% | 3117 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 56,304 psi | 88% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,638 psi | 90% | 3245 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 55,695 psi | 87% | 3169 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,145 psi | 90% | 3176 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,259 psi | 87% | 3228 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,710 psi | 89% | 3307 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,201 psi | 85% | 3143 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,462 psi | 85% | 3163 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,853 psi | 86% | 3251 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,376 psi | 88% | 3281 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,650 psi | 86% | 3212 fps | 97% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,822 psi | 81% | 3205 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,617 psi | 76% | 3140 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,409 psi | 66% | 3038 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 3353 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,898 psi | 88% | 3186 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 55,027 psi | 86% | 3159 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,822 psi | 81% | 3205 fps | 96.5% |
| Bofors RP7 | <<locked>> | 90% | 54,534 psi | 85% | 3133 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 86% | 55,463 psi | 87% | 3173 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 56,478 psi | 89% | 3245 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 56,173 psi | 88% | 3199 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 56,304 psi | 88% | 3179 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,100 psi | 86% | 3169 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,840 psi | 89% | 3219 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,130 psi | 90% | 3284 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,071 psi | 57% | 2011 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,696 psi | 90% | 3186 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,942 psi | 89% | 3159 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,579 psi | 89% | 3159 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,811 psi | 87% | 3136 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 55,651 psi | 87% | 3169 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,391 psi | 88% | 3169 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 54,360 psi | 85% | 3176 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 55,854 psi | 88% | 3196 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,057 psi | 88% | 3140 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,694 psi | 86% | 3091 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,478 psi | 89% | 3150 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,246 psi | 88% | 3163 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 57,638 psi | 90% | 3205 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,569 psi | 67% | 2940 fps | 96.6% |
| Norma 201 | <<locked>> | 82% | 54,404 psi | 85% | 3110 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,085 psi | 86% | 3110 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,392 psi | 90% | 3212 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,623 psi | 89% | 3225 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 55,216 psi | 87% | 3301 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 56,449 psi | 88% | 3232 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 54,723 psi | 86% | 3179 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,361 psi | 87% | 3225 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 57% | 2057 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,680 psi | 87% | 3156 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,463 psi | 87% | 3238 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,695 psi | 87% | 3274 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,809 psi | 84% | 3205 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,695 psi | 89% | 3304 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 54,984 psi | 86% | 3110 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,897 psi | 86% | 3153 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,043 psi | 89% | 3196 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3258 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 54,534 psi | 85% | 3133 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,246 psi | 88% | 3163 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,057 psi | 88% | 3140 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,478 psi | 89% | 3150 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,638 psi | 90% | 3205 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,884 psi | 89% | 3219 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,130 psi | 90% | 3173 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,404 psi | 85% | 3140 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,259 psi | 87% | 3045 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,434 psi | 88% | 3045 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,086 psi | 88% | 3110 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3251 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 55,027 psi | 86% | 3038 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,869 psi | 89% | 3159 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,129 psi | 86% | 3153 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,724 psi | 87% | 3235 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,433 psi | 85% | 3173 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 55,796 psi | 87% | 3025 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,274 psi | 87% | 3071 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,927 psi | 88% | 3091 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,579 psi | 89% | 3127 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,013 psi | 86% | 3169 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,053 psi | 78% | 3074 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 86% | 57,609 psi | 90% | 3130 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,012 psi | 85% | 3166 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,404 psi | 85% | 3225 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,940 psi | 86% | 3136 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,724 psi | 89% | 3248 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,961 psi | 69% | 3182 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,549 psi | 85% | 3146 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,882 psi | 86% | 3166 fps | 96.9% |
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 2495 | <<locked>> | 80% | 48,834 psi | 77% | 2972 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,514 psi | 74% | 2966 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 38,914 psi | 61% | 2858 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 46,282 psi | 73% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,041 psi | 55% | 2789 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 52,344 psi | 82% | 3114 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,338 psi | 69% | 2943 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 94% | 48,341 psi | 76% | 3094 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,921 psi | 77% | 3166 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,628 psi | 70% | 2969 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,805 psi | 75% | 3045 fps | 99.5% |
| Alliant Reloder-16 | 64.9 gr | 80% | 34,505 psi | 54% | 2805 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,175 psi | 61% | 2946 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,703 psi | 75% | 3081 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,327 psi | 76% | 3133 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,472 psi | 48% | 2700 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,188 psi | 58% | 2900 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,621 psi | 56% | 2904 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,359 psi | 82% | 3123 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 44,715 psi | 70% | 2976 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 48,327 psi | 76% | 3133 fps | 95.6% |
| Bofors RP7 | <<locked>> | 84% | 44,947 psi | 70% | 2949 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 45,237 psi | 71% | 2982 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 42,830 psi | 67% | 2979 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 46,180 psi | 72% | 3009 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 52,910 psi | 83% | 3123 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,981 psi | 50% | 2690 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,690 psi | 78% | 3100 fps | 100% |
| Hodgdon Superformance | 79.5 gr | 86% | 45,585 psi | 71% | 3068 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,876 psi | 42% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,705 psi | 79% | 3071 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,287 psi | 84% | 3107 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,586 psi | 73% | 2982 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,994 psi | 77% | 3012 fps | 97.2% |
| IMR 4350 | <<locked>> | 86% | 43,033 psi | 67% | 2923 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,772 psi | 69% | 2927 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 33,794 psi | 53% | 2740 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 49,052 psi | 77% | 3077 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 52,373 psi | 82% | 3084 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,459 psi | 81% | 3035 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,760 psi | 73% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,363 psi | 60% | 2802 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 41,814 psi | 66% | 2900 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 39,784 psi | 62% | 2877 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 50,894 psi | 80% | 3051 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,692 psi | 81% | 3054 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,181 psi | 74% | 3031 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 49,342 psi | 77% | 3091 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 44,440 psi | 70% | 3084 fps | 96% |
| Norma URP | <<locked>> | 80% | 35,201 psi | 55% | 2792 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 47,456 psi | 74% | 3048 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 39,247 psi | 62% | 2900 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,253 psi | 43% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,513 psi | 71% | 2966 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,750 psi | 81% | 3176 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,684 psi | 65% | 3018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,983 psi | 55% | 2805 fps | 95.4% |
| ReloadSwiss RS 70 | 72.8 gr | 82% | 36,782 psi | 58% | 2877 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 48,472 psi | 76% | 2999 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,076 psi | 66% | 2917 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 53,490 psi | 84% | 3136 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 46,862 psi | 73% | 3064 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 44,947 psi | 70% | 2949 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,363 psi | 60% | 2802 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,373 psi | 82% | 3084 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,760 psi | 73% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,814 psi | 66% | 2900 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,453 psi | 68% | 2972 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,229 psi | 83% | 3107 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,937 psi | 80% | 3077 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,011 psi | 82% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,801 psi | 69% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 43,091 psi | 68% | 2867 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,427 psi | 73% | 3058 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 51,590 psi | 81% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,214 psi | 83% | 3100 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,424 psi | 66% | 2917 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,531 psi | 49% | 2733 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 44,309 psi | 69% | 2976 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 52,591 psi | 82% | 2979 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,733 psi | 76% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,124 psi | 77% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,654 psi | 64% | 2844 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,593 psi | 57% | 2795 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 46,876 psi | 73% | 3012 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 47,326 psi | 74% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,013 psi | 56% | 2792 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 86% | 33,721 psi | 53% | 2789 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,071 psi | 57% | 2769 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 43,018 psi | 67% | 2982 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,790 psi | 45% | 2726 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,821 psi | 80% | 3081 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,297 psi | 74% | 3028 fps | 95% |
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 108 powders for .300 Weath. Mag. loaded with the .308 | 145gr | CutEdge ESP Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,353 fps; across all powders the maximum-charge window runs from 2,011 fps to 3,353 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 | 145gr | CutEdge ESP Raptor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Hodgdon H1000, Hodgdon Retumbo 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.