Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 162gr | SAKO Blade bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Vihtavuori N570 and ReloadSwiss RS 76.
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.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 57,740 psi | 90% | 3199 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 55,898 psi | 88% | 3307 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 88% | 56,971 psi | 89% | 3314 fps | 99% |
| ADI AR 2209 | <<locked>> | 86% | 55,637 psi | 87% | 3241 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 88% | 53,998 psi | 85% | 3248 fps | 99.3% |
| ADI AR 2217 | <<locked>> | 98% | 56,304 psi | 88% | 3281 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 52,895 psi | 83% | 3317 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 3301 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 55,767 psi | 87% | 3235 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 55,593 psi | 87% | 3232 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 55,158 psi | 86% | 3225 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 54,346 psi | 85% | 3245 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 90% | 55,883 psi | 88% | 3205 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 56,173 psi | 88% | 3281 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 56,724 psi | 89% | 3301 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 54,331 psi | 85% | 3301 fps | 97.3% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 54,897 psi | 86% | 3205 fps | 97.5% |
| Bofors RP15 | <<locked>> | 92% | 57,290 psi | 90% | 3291 fps | 99.9% |
| Bofors RP30 | <<locked>> | 96% | 55,941 psi | 88% | 3291 fps | 99.7% |
| Bofors RP5 | <<locked>> | 88% | 54,346 psi | 85% | 3245 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 94% | 53,940 psi | 85% | 3241 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 88% | 57,014 psi | 89% | 3245 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 55,970 psi | 88% | 3228 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 55,811 psi | 87% | 3146 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 55,288 psi | 87% | 3373 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,405 psi | 59% | 2090 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 54,331 psi | 85% | 3156 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 54,694 psi | 86% | 3156 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 57,421 psi | 90% | 3222 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 90% | 56,014 psi | 88% | 3294 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 50,038 psi | 78% | 3202 fps | 99.1% |
| Lovex S070 | <<locked>> | 82% | 56,318 psi | 88% | 3186 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 55,593 psi | 87% | 3166 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,419 psi | 87% | 3215 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 50,879 psi | 80% | 3228 fps | 100% |
| Norma MRP | <<locked>> | 86% | 54,230 psi | 85% | 3261 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,304 psi | 88% | 3205 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 57,464 psi | 90% | 3320 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 55,332 psi | 87% | 3212 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 55,709 psi | 87% | 3235 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,406 psi | 60% | 2142 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 57,377 psi | 90% | 3281 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 56,289 psi | 88% | 3360 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 55,622 psi | 87% | 3314 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 86% | 56,275 psi | 88% | 3209 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 86% | 54,824 psi | 86% | 3215 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 82% | 56,318 psi | 88% | 3186 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,942 psi | 89% | 3140 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 54,433 psi | 85% | 3212 fps | 99.8% |
| Somchem S361 | <<locked>> | 84% | 53,940 psi | 85% | 3130 fps | 98.9% |
| Somchem S365 | <<locked>> | 82% | 53,925 psi | 85% | 3150 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 55,071 psi | 86% | 3182 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 55,100 psi | 86% | 3166 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 57,043 psi | 89% | 3199 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,696 psi | 90% | 3238 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,725 psi | 90% | 3327 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 92% | 54,592 psi | 86% | 3248 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 96% | 56,144 psi | 88% | 3317 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 98% | 57,363 psi | 90% | 3383 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 57,696 psi | 90% | 3140 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 55,680 psi | 87% | 3294 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 55,056 psi | 86% | 3176 fps | 99.8% |
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% | 40,799 psi | 64% | 2894 fps | 99.5% |
| Accurate High Country | <<locked>> | 80% | 45,005 psi | 71% | 3094 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 80% | 42,482 psi | 67% | 3022 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 45,194 psi | 71% | 3041 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 80% | 40,393 psi | 63% | 2966 fps | 96.4% |
| ADI AR 2217 | <<locked>> | 86% | 36,912 psi | 58% | 2871 fps | 95.5% |
| ADI AR 2218 | <<locked>> | 98% | 49,081 psi | 77% | 3235 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 84% | 31,285 psi | 49% | 2756 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,571 psi | 71% | 3041 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 52,069 psi | 82% | 3173 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,150 psi | 71% | 3035 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,988 psi | 64% | 2972 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,769 psi | 62% | 2920 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,229 psi | 54% | 2835 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,976 psi | 70% | 3094 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 46,441 psi | 73% | 3146 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 48,109 psi | 75% | 3071 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 38,087 psi | 60% | 2900 fps | 96.8% |
| Bofors RP30 | <<locked>> | 84% | 36,637 psi | 57% | 2884 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 40,988 psi | 64% | 2972 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 82% | 34,983 psi | 55% | 2822 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 80% | 43,047 psi | 67% | 2972 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,235 psi | 66% | 2956 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,776 psi | 76% | 3031 fps | 100% |
| Hodgdon Retumbo | 88.7 gr | 80% | 33,431 psi | 52% | 2861 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 44% | 1873 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,879 psi | 80% | 3097 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 51,155 psi | 80% | 3100 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,251 psi | 69% | 2969 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 80% | 39,160 psi | 61% | 2946 fps | 96% |
| IMR 8133 Enduron | <<locked>> | 92% | 37,710 psi | 59% | 2930 fps | 95.9% |
| Lovex S070 | <<locked>> | 80% | 52,765 psi | 83% | 3127 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,925 psi | 55% | 2753 fps | 98.2% |
| Norma 204 | <<locked>> | 80% | 51,822 psi | 81% | 3153 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 30,632 psi | 48% | 2749 fps | 95% |
| Norma MRP | <<locked>> | 80% | 43,555 psi | 68% | 3051 fps | 99.3% |
| Norma URP | <<locked>> | 80% | 52,649 psi | 83% | 3146 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,928 psi | 61% | 2953 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 80% | 51,808 psi | 81% | 3153 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,983 psi | 55% | 2815 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,747 psi | 45% | 1919 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 53,200 psi | 83% | 3215 fps | 100% |
| ReloadSwiss RS 76 | 94.9 gr | 80% | 32,619 psi | 51% | 2828 fps | 96.8% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 40,495 psi | 63% | 3005 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 46,050 psi | 72% | 3015 fps | 98% |
| Rottweil R 905 | <<locked>> | 80% | 44,570 psi | 70% | 3018 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 80% | 52,765 psi | 83% | 3127 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,243 psi | 83% | 3077 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,222 psi | 69% | 3015 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 47,021 psi | 74% | 3002 fps | 97.6% |
| Somchem S365 | <<locked>> | 80% | 50,299 psi | 79% | 3094 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,918 psi | 70% | 2992 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 80% | 39,204 psi | 61% | 2858 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 80% | 53,476 psi | 84% | 3140 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,150 psi | 69% | 3002 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,366 psi | 68% | 3045 fps | 96.8% |
| Vihtavuori N565 | <<locked>> | 82% | 38,232 psi | 60% | 2900 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 88% | 41,684 psi | 65% | 3022 fps | 95.1% |
| Vihtavuori N570 | 108.1 gr | 94% | 49,429 psi | 77% | 3232 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,737 psi | 84% | 3084 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,492 psi | 59% | 2966 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,437 psi | 65% | 2917 fps | 97.9% |
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 62 powders for .30-378 Weath. Mag. loaded with the .308 | 162gr | SAKO Blade. Vihtavuori N570 delivers the highest muzzle velocity at 3,383 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,383 fps. ADI AR 2218 gives the best case fill at 100 %, and 62 of the 62 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 162.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, 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, Vihtavuori N570, ReloadSwiss RS 76 rank at the top here: for .30-378 Weath. Mag. with the .308 | 162gr | SAKO Blade 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.