Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:230 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.378 Weath. Mag. load data
Case Length (l3):2.913"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:137 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.0
Load data in caliber .378 Weath. Mag. with .375 | 230gr | CutEdge ESP Raptor bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 54,563 psi | 86% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,913 psi | 89% | 3058 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 3025 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 55,129 psi | 86% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,057 psi | 88% | 3146 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,100 psi | 86% | 3238 fps | 97% |
| ADI AR 2206H | <<locked>> | 82% | 54,766 psi | 86% | 3074 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,014 psi | 88% | 3081 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 57,667 psi | 90% | 3196 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,043 psi | 89% | 3071 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,201 psi | 87% | 3209 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 57,566 psi | 90% | 3189 fps | 98.2% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 57,566 psi | 90% | 3189 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,521 psi | 89% | 3100 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,898 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,971 psi | 89% | 3212 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,752 psi | 86% | 3182 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3179 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,024 psi | 78% | 3114 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,050 psi | 74% | 3051 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,118 psi | 64% | 2953 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 3258 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,781 psi | 86% | 3091 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 57,348 psi | 90% | 3117 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,024 psi | 78% | 3114 fps | 97% |
| Bofors RP7 | <<locked>> | 92% | 56,869 psi | 89% | 3097 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,985 psi | 89% | 3100 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 54,288 psi | 85% | 3077 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 54,998 psi | 86% | 3146 fps | 99% |
| Hodgdon H4350 | <<locked>> | 90% | 54,969 psi | 86% | 3107 fps | 98% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3127 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 82% | 55,390 psi | 87% | 3084 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,276 psi | 90% | 3123 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,506 psi | 87% | 3120 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,405 psi | 87% | 3189 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,027 psi | 56% | 1929 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,521 psi | 89% | 3084 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,811 psi | 87% | 3058 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,405 psi | 87% | 3061 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,737 psi | 86% | 3041 fps | 98.9% |
| IMR 4350 | <<locked>> | 94% | 54,317 psi | 85% | 3074 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,288 psi | 87% | 3074 fps | 98.9% |
| IMR 4831 | <<locked>> | 96% | 56,637 psi | 89% | 3140 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,679 psi | 86% | 3100 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,130 psi | 90% | 3117 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 82% | 57,043 psi | 89% | 3071 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,897 psi | 86% | 3041 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,130 psi | 90% | 3048 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,347 psi | 87% | 3051 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,998 psi | 86% | 3068 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 56,347 psi | 88% | 3110 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,336 psi | 65% | 2861 fps | 97.3% |
| Norma 201 | <<locked>> | 84% | 56,695 psi | 89% | 3064 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,682 psi | 90% | 3064 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,159 psi | 88% | 3110 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,158 psi | 86% | 3130 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 53,214 psi | 83% | 3205 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 54,984 psi | 86% | 3133 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 57,159 psi | 90% | 3136 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 57,566 psi | 90% | 3192 fps | 99.7% |
| Ramshot TAC | <<locked>> | 82% | 57,246 psi | 90% | 3097 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,334 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 57% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,404 psi | 85% | 3061 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,143 psi | 85% | 3140 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,244 psi | 85% | 3176 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,144 psi | 88% | 3173 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,868 psi | 86% | 3205 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 57,290 psi | 90% | 3038 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,421 psi | 90% | 3064 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,363 psi | 90% | 3110 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,695 psi | 87% | 3104 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,709 psi | 87% | 3163 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 92% | 56,869 psi | 89% | 3097 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,998 psi | 86% | 3068 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,897 psi | 86% | 3041 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,347 psi | 87% | 3051 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,347 psi | 88% | 3110 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,608 psi | 87% | 3120 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,927 psi | 88% | 3074 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,826 psi | 89% | 3097 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,346 psi | 85% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,216 psi | 87% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,940 psi | 86% | 3018 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,216 psi | 87% | 3156 fps | 98% |
| Somchem S335 | <<locked>> | 84% | 57,334 psi | 90% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,724 psi | 87% | 3061 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,406 psi | 90% | 3107 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 57,711 psi | 90% | 3189 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3136 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 54,897 psi | 86% | 2927 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,259 psi | 85% | 2972 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,737 psi | 86% | 2989 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,317 psi | 87% | 3028 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,276 psi | 90% | 3130 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,660 psi | 76% | 2986 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 82% | 57,566 psi | 90% | 3071 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,463 psi | 88% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,289 psi | 88% | 3133 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,692 psi | 83% | 3133 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,348 psi | 90% | 3097 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,158 psi | 86% | 3150 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,453 psi | 67% | 3097 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,087 psi | 89% | 3107 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,098 psi | 83% | 3071 fps | 97.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 47,761 psi | 75% | 2877 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,499 psi | 73% | 2874 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 35,128 psi | 55% | 2720 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,281 psi | 71% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,084 psi | 53% | 2713 fps | 96.7% |
| Accurate High Country | <<locked>> | 96% | 47,718 psi | 75% | 3104 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 51,300 psi | 80% | 3018 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,497 psi | 68% | 2858 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 44,135 psi | 69% | 2943 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,476 psi | 84% | 3018 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,819 psi | 75% | 3077 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 44,179 psi | 69% | 2943 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 44,179 psi | 69% | 2943 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,685 psi | 68% | 2881 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,775 psi | 73% | 2953 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,794 psi | 53% | 2730 fps | 96.9% |
| Alliant Reloder-17 | 94.8 gr | 80% | 38,232 psi | 60% | 2867 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,627 psi | 68% | 2936 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,743 psi | 69% | 2986 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,760 psi | 44% | 2572 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,794 psi | 53% | 2759 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,169 psi | 50% | 2762 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,184 psi | 80% | 3031 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 43,700 psi | 68% | 2887 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 43,743 psi | 69% | 2986 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 41,278 psi | 65% | 2805 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,200 psi | 83% | 3045 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,353 psi | 70% | 2900 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 39,073 psi | 61% | 2835 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 42,279 psi | 66% | 2861 fps | 95% |
| Hodgdon H4831 | <<locked>> | 98% | 51,735 psi | 81% | 3061 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 51,866 psi | 81% | 3025 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,183 psi | 49% | 2618 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,399 psi | 76% | 3005 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,075 psi | 64% | 2910 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 42% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,661 psi | 78% | 2976 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,214 psi | 82% | 3005 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,687 psi | 72% | 2890 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,211 psi | 76% | 2923 fps | 97.8% |
| IMR 4350 | <<locked>> | 86% | 41,989 psi | 66% | 2838 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,292 psi | 63% | 2782 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,011 psi | 52% | 2667 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 48,022 psi | 75% | 2986 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 53,476 psi | 84% | 3054 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 53,476 psi | 84% | 3018 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,169 psi | 80% | 2986 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,473 psi | 79% | 2940 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,759 psi | 72% | 2890 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,579 psi | 59% | 2726 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 38,203 psi | 60% | 2759 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 36,129 psi | 57% | 2743 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 49,966 psi | 78% | 2956 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,662 psi | 79% | 2956 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,151 psi | 72% | 2940 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,759 psi | 70% | 2936 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 40,074 psi | 63% | 2933 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 34,287 psi | 54% | 2717 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 46,427 psi | 73% | 2959 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,708 psi | 56% | 2759 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 53,577 psi | 84% | 3038 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,577 psi | 84% | 3058 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 43% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,483 psi | 70% | 2881 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,372 psi | 79% | 3077 fps | 99.9% |
| ReloadSwiss RS 60 | 94.8 gr | 80% | 40,727 psi | 64% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,953 psi | 53% | 2733 fps | 96.3% |
| ReloadSwiss RS 70 | 96.3 gr | 80% | 33,446 psi | 52% | 2736 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 53,969 psi | 85% | 2989 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,616 psi | 75% | 2907 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,046 psi | 64% | 2828 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 48,805 psi | 76% | 2982 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 45,411 psi | 71% | 2976 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 41,278 psi | 65% | 2805 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,579 psi | 59% | 2726 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,169 psi | 80% | 2986 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,759 psi | 72% | 2890 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,203 psi | 60% | 2759 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,337 psi | 66% | 2887 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,199 psi | 82% | 3015 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,777 psi | 78% | 2982 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,068 psi | 80% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,975 psi | 67% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,421 psi | 62% | 2726 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,005 psi | 71% | 2969 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 50,676 psi | 79% | 2890 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,054 psi | 82% | 3005 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,568 psi | 65% | 2831 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,719 psi | 48% | 2664 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 40,277 psi | 63% | 2835 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 51,648 psi | 81% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,688 psi | 75% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,066 psi | 75% | 2887 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,697 psi | 62% | 2759 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,708 psi | 56% | 2720 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 96% | 42,496 psi | 67% | 2867 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 53,824 psi | 84% | 3015 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,456 psi | 73% | 2881 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,215 psi | 55% | 2717 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 84% | 30,501 psi | 48% | 2657 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,172 psi | 55% | 2690 fps | 98.9% |
| Winchester 760 | <<locked>> | 82% | 39,175 psi | 61% | 2835 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,150 psi | 41% | 2595 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,719 psi | 78% | 2989 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,905 psi | 72% | 2940 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 105 powders for .378 Weath. Mag. loaded with the .375 | 230gr | CutEdge ESP Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,258 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 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 230.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .378 Weath. Mag. with the .375 | 230gr | CutEdge ESP Raptor 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.