Load Specifications
Load data in caliber .30-378 Weath. Mag. with .311 | 180gr | Lehigh Defense Match Solid bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N570, Alliant Reloder-33 and Hodgdon Retumbo.
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>> | 88% | 57,522 psi | 90% | 3058 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 55,956 psi | 88% | 3169 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 86% | 56,971 psi | 89% | 3179 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 84% | 55,317 psi | 87% | 3097 fps | 100% |
| ADI AR 2213 | <<locked>> | 86% | 53,838 psi | 84% | 3110 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 96% | 56,579 psi | 89% | 3153 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 57,130 psi | 90% | 3281 fps | 98.9% |
| ADI AR 2225 | <<locked>> | 98% | 55,521 psi | 87% | 3169 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 55,521 psi | 87% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 54,926 psi | 86% | 3087 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 54,273 psi | 85% | 3107 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,014 psi | 88% | 3064 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,521 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,753 psi | 89% | 3156 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 54,636 psi | 86% | 3179 fps | 98.2% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 3166 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 54,433 psi | 85% | 3071 fps | 98.3% |
| Bofors RP15 | <<locked>> | 90% | 57,261 psi | 90% | 3153 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 56,333 psi | 88% | 3163 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 54,273 psi | 85% | 3107 fps | 100% |
| Hodgdon H1000 | <<locked>> | 92% | 54,157 psi | 85% | 3110 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 56,637 psi | 89% | 3104 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,579 psi | 87% | 3087 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,535 psi | 87% | 2999 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 55,796 psi | 87% | 3238 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,637 psi | 59% | 1991 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,377 psi | 90% | 3068 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,797 psi | 89% | 3077 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 88% | 56,202 psi | 88% | 3159 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,288 psi | 85% | 3146 fps | 99.9% |
| Lovex S071 | <<locked>> | 92% | 55,608 psi | 87% | 3031 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,724 psi | 87% | 3173 fps | 100% |
| Norma MRP | <<locked>> | 84% | 54,360 psi | 85% | 3123 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 57,551 psi | 90% | 3182 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 55,898 psi | 88% | 3104 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,580 psi | 60% | 2037 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,797 psi | 89% | 3222 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,999 psi | 88% | 3189 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 84% | 55,796 psi | 87% | 3064 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 84% | 54,621 psi | 86% | 3077 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 54,244 psi | 85% | 3074 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 57,087 psi | 89% | 3054 fps | 99.7% |
| Somchem S365 | <<locked>> | 82% | 57,624 psi | 90% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,897 psi | 86% | 3041 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,868 psi | 86% | 3028 fps | 100% |
| Vihtavuori N170 | <<locked>> | 92% | 54,114 psi | 85% | 3051 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 86% | 57,740 psi | 90% | 3094 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,624 psi | 90% | 3189 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 90% | 54,708 psi | 86% | 3117 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 94% | 56,492 psi | 89% | 3192 fps | 99.4% |
| Vihtavuori N570 | <<locked>> | 94% | 53,708 psi | 84% | 3189 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,521 psi | 89% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 54,708 psi | 86% | 3041 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% | 43,743 psi | 69% | 2828 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 48,428 psi | 76% | 3035 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 80% | 45,803 psi | 72% | 2972 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 80% | 48,167 psi | 75% | 2972 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 80% | 43,482 psi | 68% | 2913 fps | 98.3% |
| ADI AR 2217 | <<locked>> | 82% | 34,447 psi | 54% | 2697 fps | 95.8% |
| ADI AR 2218 | <<locked>> | 94% | 45,629 psi | 72% | 3045 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 29,399 psi | 46% | 2592 fps | 96.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 48,501 psi | 76% | 2972 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,037 psi | 75% | 2963 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,135 psi | 69% | 2917 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,786 psi | 67% | 2844 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,014 psi | 58% | 2782 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,878 psi | 77% | 3028 fps | 100% |
| Alliant Reloder-33 | 106.4 gr | 90% | 43,352 psi | 68% | 2959 fps | 95.3% |
| Alliant Reloder-50 | <<locked>> | 96% | 46,456 psi | 73% | 3015 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 41,930 psi | 66% | 2822 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 41,017 psi | 64% | 2848 fps | 98.6% |
| Bofors RP30 | <<locked>> | 80% | 34,418 psi | 54% | 2707 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 44,135 psi | 69% | 2917 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 80% | 35,041 psi | 55% | 2713 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 80% | 45,919 psi | 72% | 2910 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,194 psi | 71% | 2897 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,011 psi | 82% | 2946 fps | 100% |
| Hodgdon Retumbo | 87.7 gr | 80% | 36,172 psi | 57% | 2828 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,268 psi | 44% | 1785 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,766 psi | 84% | 3012 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,818 psi | 73% | 2900 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 80% | 42,163 psi | 66% | 2894 fps | 98% |
| IMR 8133 Enduron | <<locked>> | 86% | 33,243 psi | 52% | 2694 fps | 95.2% |
| Lovex S071 | <<locked>> | 80% | 37,579 psi | 59% | 2697 fps | 99.5% |
| Norma 217 | <<locked>> | 82% | 28,950 psi | 45% | 2585 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 46,978 psi | 74% | 2989 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 42,264 psi | 66% | 2904 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 80% | 37,956 psi | 59% | 2769 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,037 psi | 46% | 1831 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,418 psi | 56% | 2799 fps | 99% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 37,840 psi | 59% | 2822 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 48,936 psi | 77% | 2946 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 47,572 psi | 75% | 2953 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,239 psi | 74% | 2946 fps | 99.6% |
| Somchem S361 | <<locked>> | 80% | 49,893 psi | 78% | 2933 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 53,780 psi | 84% | 3005 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 48,022 psi | 75% | 2927 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 41,916 psi | 66% | 2795 fps | 99.2% |
| Vihtavuori N170 | <<locked>> | 90% | 50,444 psi | 79% | 2986 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 47,326 psi | 74% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,601 psi | 73% | 2989 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 80% | 38,537 psi | 60% | 2789 fps | 96.6% |
| Vihtavuori N568 | <<locked>> | 84% | 39,160 psi | 61% | 2844 fps | 95.5% |
| Vihtavuori N570 | 102.4 gr | 90% | 46,398 psi | 73% | 3045 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,452 psi | 65% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,280 psi | 69% | 2854 fps | 99.2% |
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 53 powders for .30-378 Weath. Mag. loaded with the .311 | 180gr | Lehigh Defense Match Solid. ADI AR 2218 delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,281 fps. ADI AR 2218 gives the best case fill at 100 %, and 53 of the 53 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 0.311" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Alliant Reloder-50, 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. Vihtavuori N570, Alliant Reloder-33, Hodgdon Retumbo rank at the top here: for .30-378 Weath. Mag. with the .311 | 180gr | Lehigh Defense Match Solid 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.