Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.30-378 Weath. Mag. load data
Case Length (l3):2.913"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:133 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.5
Load data in caliber .30-378 Weath. Mag. with .308 | 180gr | Berger Elite Hunter bullet and 108 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ADI AR 2218 and Vihtavuori N570.
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 3100 | <<locked>> | 86% | 56,608 psi | 89% | 3041 fps | 100% |
| Accurate 3100 | <<locked>> | 86% | 56,608 psi | 89% | 3041 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 2995 fps | 96.3% |
| Accurate 8700ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 2995 fps | 96.3% |
| Accurate High Country | <<locked>> | 82% | 54,694 psi | 86% | 3146 fps | 99.9% |
| Accurate High Country | <<locked>> | 82% | 54,694 psi | 86% | 3146 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 84% | 55,535 psi | 87% | 3153 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 84% | 55,535 psi | 87% | 3153 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 84% | 57,450 psi | 90% | 3133 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 57,450 psi | 90% | 3133 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 56,202 psi | 88% | 3150 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 86% | 56,202 psi | 88% | 3150 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 94% | 55,288 psi | 87% | 3127 fps | 100% |
| ADI AR 2217 | <<locked>> | 94% | 55,288 psi | 87% | 3127 fps | 100% |
| ADI AR 2218 | <<locked>> | 98% | 55,811 psi | 87% | 3255 fps | 98.8% |
| ADI AR 2218 | <<locked>> | 98% | 55,811 psi | 87% | 3255 fps | 98.8% |
| ADI AR 2225 | <<locked>> | 96% | 54,679 psi | 86% | 3153 fps | 100% |
| ADI AR 2225 | <<locked>> | 96% | 54,679 psi | 86% | 3153 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 54,404 psi | 85% | 3074 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 57,609 psi | 90% | 3127 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,014 psi | 89% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 57,014 psi | 89% | 3117 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 56,710 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 56,710 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 55,013 psi | 86% | 3045 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 55,013 psi | 86% | 3045 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 55,564 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 55,564 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 55,680 psi | 87% | 3136 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 55,680 psi | 87% | 3136 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 53,650 psi | 84% | 3159 fps | 98.1% |
| Alliant Reloder-33 | <<locked>> | 94% | 53,650 psi | 84% | 3159 fps | 98.1% |
| Alliant Reloder-50 | <<locked>> | 98% | 53,650 psi | 84% | 3150 fps | 97.7% |
| Alliant Reloder-50 | <<locked>> | 98% | 53,650 psi | 84% | 3150 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,507 psi | 89% | 3104 fps | 98.7% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 56,507 psi | 89% | 3104 fps | 98.7% |
| Bofors RP15 | <<locked>> | 88% | 56,130 psi | 88% | 3133 fps | 100% |
| Bofors RP15 | <<locked>> | 88% | 56,130 psi | 88% | 3133 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 55,332 psi | 87% | 3143 fps | 100% |
| Bofors RP30 | <<locked>> | 92% | 55,332 psi | 87% | 3143 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 56,710 psi | 89% | 3143 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 56,710 psi | 89% | 3143 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,739 psi | 89% | 3150 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 56,739 psi | 89% | 3150 fps | 100% |
| Hodgdon H4831 | <<locked>> | 84% | 55,085 psi | 86% | 3077 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 84% | 55,085 psi | 86% | 3077 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 54,114 psi | 85% | 3061 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 84% | 54,114 psi | 85% | 3061 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,696 psi | 90% | 3028 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 57,696 psi | 90% | 3028 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 54,940 psi | 86% | 3219 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 54,940 psi | 86% | 3219 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,898 psi | 59% | 2005 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,898 psi | 59% | 2005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,274 psi | 87% | 3054 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 84% | 55,274 psi | 87% | 3054 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 86% | 54,795 psi | 86% | 3133 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 86% | 54,795 psi | 86% | 3133 fps | 99.9% |
| IMR 7977 Enduron | <<locked>> | 92% | 57,493 psi | 90% | 3058 fps | 95.9% |
| IMR 7977 Enduron | <<locked>> | 92% | 57,493 psi | 90% | 3058 fps | 95.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3192 fps | 100% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3192 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 54,940 psi | 86% | 3015 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 54,940 psi | 86% | 3015 fps | 100% |
| Norma 217 | <<locked>> | 98% | 55,085 psi | 86% | 3156 fps | 100% |
| Norma 217 | <<locked>> | 98% | 55,085 psi | 86% | 3156 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,913 psi | 89% | 3159 fps | 100% |
| Norma MRP | <<locked>> | 84% | 56,913 psi | 89% | 3159 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,101 psi | 88% | 3156 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 56,101 psi | 88% | 3156 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 54,505 psi | 85% | 3077 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 54,505 psi | 85% | 3077 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,870 psi | 61% | 2051 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,870 psi | 61% | 2051 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 55,593 psi | 87% | 3199 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 55,593 psi | 87% | 3199 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,897 psi | 86% | 3166 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 54,897 psi | 86% | 3166 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 82% | 54,201 psi | 85% | 3038 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 82% | 54,201 psi | 85% | 3038 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 84% | 56,913 psi | 89% | 3110 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 56,913 psi | 89% | 3110 fps | 100% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 49,937 psi | 78% | 3009 fps | 96.4% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 49,937 psi | 78% | 3009 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 56,536 psi | 89% | 3107 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 56,536 psi | 89% | 3107 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 55,608 psi | 87% | 3028 fps | 99.6% |
| Somchem S361 | <<locked>> | 82% | 55,608 psi | 87% | 3028 fps | 99.6% |
| Somchem S385 | <<locked>> | 84% | 57,290 psi | 90% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 57,290 psi | 90% | 3077 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 57,305 psi | 90% | 3064 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 57,305 psi | 90% | 3064 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 56,652 psi | 89% | 3094 fps | 97.3% |
| Vihtavuori N170 | <<locked>> | 92% | 56,652 psi | 89% | 3094 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 84% | 56,724 psi | 89% | 3074 fps | 100% |
| Vihtavuori N555 | <<locked>> | 84% | 56,724 psi | 89% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 56,246 psi | 88% | 3163 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 84% | 56,246 psi | 88% | 3163 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 90% | 57,435 psi | 90% | 3159 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 90% | 57,435 psi | 90% | 3159 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 92% | 55,303 psi | 87% | 3169 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 92% | 55,303 psi | 87% | 3169 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 94% | 56,782 psi | 89% | 3238 fps | 98.4% |
| Vihtavuori N570 | <<locked>> | 94% | 56,782 psi | 89% | 3238 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,535 psi | 87% | 3140 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 86% | 55,535 psi | 87% | 3140 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 57,000 psi | 89% | 3074 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 57,000 psi | 89% | 3074 fps | 100% |
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 3100 | <<locked>> | 80% | 46,267 psi | 73% | 2871 fps | 100% |
| Accurate 3100 | <<locked>> | 80% | 46,267 psi | 73% | 2871 fps | 100% |
| Accurate 8700 | <<locked>> | 98% | 44,454 psi | 70% | 2923 fps | 95.2% |
| Accurate 8700 | <<locked>> | 98% | 44,454 psi | 70% | 2923 fps | 95.2% |
| Accurate High Country | <<locked>> | 80% | 51,039 psi | 80% | 3081 fps | 99.6% |
| Accurate High Country | <<locked>> | 80% | 51,039 psi | 80% | 3081 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 80% | 48,269 psi | 76% | 3018 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 80% | 48,269 psi | 76% | 3018 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 80% | 50,299 psi | 79% | 3009 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 80% | 50,299 psi | 79% | 3009 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 45,629 psi | 72% | 2956 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 45,629 psi | 72% | 2956 fps | 98.8% |
| ADI AR 2217 | <<locked>> | 80% | 33,968 psi | 53% | 2677 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 80% | 33,968 psi | 53% | 2677 fps | 95.7% |
| ADI AR 2218 | 109 gr | 92% | 44,701 psi | 70% | 3022 fps | 95.9% |
| ADI AR 2218 | 109 gr | 92% | 44,701 psi | 70% | 3022 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 31,372 psi | 49% | 2651 fps | 97.8% |
| ADI AR 2225 | <<locked>> | 80% | 31,372 psi | 49% | 2651 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 51,010 psi | 80% | 3015 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 50,604 psi | 79% | 3009 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,125 psi | 79% | 3002 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 80% | 50,125 psi | 79% | 3002 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,398 psi | 73% | 2959 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 46,398 psi | 73% | 2959 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,150 psi | 71% | 2884 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 45,150 psi | 71% | 2884 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,276 psi | 62% | 2828 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 39,276 psi | 62% | 2828 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,663 psi | 81% | 3071 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 51,663 psi | 81% | 3071 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 42,844 psi | 67% | 2943 fps | 95.2% |
| Alliant Reloder-33 | <<locked>> | 88% | 42,844 psi | 67% | 2943 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 94% | 46,180 psi | 72% | 3002 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 94% | 46,180 psi | 72% | 3002 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,482 psi | 68% | 2858 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 43,482 psi | 68% | 2858 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 43,105 psi | 68% | 2890 fps | 99% |
| Bofors RP15 | <<locked>> | 80% | 43,105 psi | 68% | 2890 fps | 99% |
| Bofors RP30 | <<locked>> | 80% | 36,709 psi | 58% | 2762 fps | 96.9% |
| Bofors RP30 | <<locked>> | 80% | 36,709 psi | 58% | 2762 fps | 96.9% |
| Bofors RP5 | <<locked>> | 80% | 46,398 psi | 73% | 2959 fps | 99.6% |
| Bofors RP5 | <<locked>> | 80% | 46,398 psi | 73% | 2959 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 37,028 psi | 58% | 2762 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 80% | 37,028 psi | 58% | 2762 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 80% | 47,979 psi | 75% | 2949 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 80% | 47,979 psi | 75% | 2949 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,253 psi | 74% | 2933 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 47,253 psi | 74% | 2933 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 54,157 psi | 85% | 2976 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 54,157 psi | 85% | 2976 fps | 100% |
| Hodgdon Retumbo | 89.5 gr | 80% | 38,421 psi | 60% | 2884 fps | 99% |
| Hodgdon Retumbo | 89.5 gr | 80% | 38,421 psi | 60% | 2884 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,456 psi | 45% | 1795 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,456 psi | 45% | 1795 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,675 psi | 76% | 2936 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 80% | 48,675 psi | 76% | 2936 fps | 99% |
| IMR 7828 SSC | <<locked>> | 80% | 44,382 psi | 70% | 2936 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 44,382 psi | 70% | 2936 fps | 98.6% |
| IMR 7977 Enduron | <<locked>> | 90% | 53,940 psi | 85% | 2995 fps | 95.1% |
| IMR 7977 Enduron | <<locked>> | 90% | 53,940 psi | 85% | 2995 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 84% | 33,228 psi | 52% | 2687 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 84% | 33,228 psi | 52% | 2687 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 39,943 psi | 63% | 2743 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 39,943 psi | 63% | 2743 fps | 99.8% |
| Norma 217 | <<locked>> | 80% | 29,124 psi | 46% | 2585 fps | 95.7% |
| Norma 217 | <<locked>> | 80% | 29,124 psi | 46% | 2585 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 49,501 psi | 78% | 3035 fps | 100% |
| Norma MRP | <<locked>> | 80% | 49,501 psi | 78% | 3035 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 44,817 psi | 70% | 2953 fps | 99% |
| Ramshot Grand | <<locked>> | 80% | 44,817 psi | 70% | 2953 fps | 99% |
| Ramshot Magnum | <<locked>> | 80% | 40,379 psi | 63% | 2818 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 80% | 40,379 psi | 63% | 2818 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,269 psi | 46% | 1837 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,269 psi | 46% | 1837 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,869 psi | 59% | 2858 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 37,869 psi | 59% | 2858 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 37,521 psi | 59% | 2808 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 37,521 psi | 59% | 2808 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 50,792 psi | 80% | 2979 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 80% | 50,792 psi | 80% | 2979 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 49,821 psi | 78% | 2992 fps | 99.9% |
| Rottweil R 905 | <<locked>> | 80% | 49,821 psi | 78% | 2992 fps | 99.9% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 46,557 psi | 73% | 2946 fps | 95.5% |
| SNPE Vectan SP 13 | <<locked>> | 98% | 46,557 psi | 73% | 2946 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,501 psi | 78% | 2989 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 49,501 psi | 78% | 2989 fps | 99.8% |
| Somchem S361 | <<locked>> | 80% | 51,953 psi | 81% | 2969 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 51,953 psi | 81% | 2969 fps | 99.3% |
| Somchem S385 | <<locked>> | 80% | 50,285 psi | 79% | 2963 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 50,285 psi | 79% | 2963 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 44,019 psi | 69% | 2835 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 80% | 44,019 psi | 69% | 2835 fps | 99.5% |
| Vihtavuori N170 | <<locked>> | 88% | 49,414 psi | 77% | 2963 fps | 95.6% |
| Vihtavuori N170 | <<locked>> | 88% | 49,414 psi | 77% | 2963 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 49,777 psi | 78% | 2966 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 49,777 psi | 78% | 2966 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 49,008 psi | 77% | 3031 fps | 99% |
| Vihtavuori N560 | <<locked>> | 80% | 49,008 psi | 77% | 3031 fps | 99% |
| Vihtavuori N565 | <<locked>> | 80% | 40,886 psi | 64% | 2841 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 80% | 40,886 psi | 64% | 2841 fps | 97.5% |
| Vihtavuori N568 | <<locked>> | 82% | 38,711 psi | 61% | 2828 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 82% | 38,711 psi | 61% | 2828 fps | 95.4% |
| Vihtavuori N570 | 102.1 gr | 88% | 45,672 psi | 72% | 3022 fps | 95.7% |
| Vihtavuori N570 | 102.1 gr | 88% | 45,672 psi | 72% | 3022 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 44,266 psi | 69% | 2956 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 44,266 psi | 69% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,383 psi | 73% | 2894 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 80% | 46,383 psi | 73% | 2894 fps | 99.5% |
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 .30-378 Weath. Mag. loaded with the .308 | 180gr | Berger Elite Hunter. ADI AR 2218 delivers the highest muzzle velocity at 3,255 fps; across all powders the maximum-charge window runs from 2,005 fps to 3,255 fps. Accurate 8700 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 59–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, Accurate 8700, Hodgdon TrailBoss 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. Hodgdon Retumbo, ADI AR 2218, Vihtavuori N570 rank at the top here: for .30-378 Weath. Mag. with the .308 | 180gr | Berger Elite Hunter 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.