Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 165gr | Nosler Ballistic Tip Hunting bullet and 53 powders. The key underlying parameters are shown in the table above.
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% | 57,551 psi | 90% | 3169 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 55,550 psi | 87% | 3274 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 86% | 56,507 psi | 89% | 3278 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 84% | 54,723 psi | 86% | 3199 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 88% | 57,101 psi | 89% | 3278 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 96% | 55,999 psi | 88% | 3251 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3373 fps | 98.2% |
| ADI AR 2225 | <<locked>> | 98% | 54,969 psi | 86% | 3271 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 54,549 psi | 85% | 3189 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 57,551 psi | 90% | 3271 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,651 psi | 87% | 3173 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,072 psi | 88% | 3251 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,318 psi | 88% | 3261 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 54,244 psi | 85% | 3274 fps | 97.5% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3258 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,638 psi | 90% | 3228 fps | 98.3% |
| Bofors RP15 | <<locked>> | 90% | 56,898 psi | 89% | 3261 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 55,898 psi | 88% | 3261 fps | 99.8% |
| Bofors RP5 | <<locked>> | 88% | 57,551 psi | 90% | 3271 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,479 psi | 90% | 3271 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 56,144 psi | 88% | 3202 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,143 psi | 86% | 3189 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,114 psi | 86% | 3107 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 55,158 psi | 86% | 3340 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,710 psi | 59% | 2087 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,956 psi | 89% | 3173 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,740 psi | 90% | 3176 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,492 psi | 89% | 3182 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 88% | 55,521 psi | 87% | 3258 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,983 psi | 85% | 3245 fps | 99.7% |
| Lovex S071 | <<locked>> | 92% | 55,521 psi | 87% | 3140 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,129 psi | 86% | 3271 fps | 100% |
| Norma MRP | <<locked>> | 84% | 53,896 psi | 84% | 3225 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,826 psi | 89% | 3284 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 90% | 55,317 psi | 87% | 3202 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,638 psi | 61% | 2133 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,101 psi | 88% | 3327 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,608 psi | 87% | 3284 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 84% | 55,303 psi | 87% | 3166 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 84% | 54,143 psi | 85% | 3179 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,595 psi | 90% | 3241 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,782 psi | 89% | 3156 fps | 99.4% |
| Somchem S365 | <<locked>> | 82% | 57,217 psi | 90% | 3173 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,621 psi | 86% | 3150 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,650 psi | 86% | 3133 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,609 psi | 90% | 3212 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 86% | 57,493 psi | 90% | 3205 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,116 psi | 90% | 3291 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 90% | 54,317 psi | 85% | 3212 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 94% | 56,028 psi | 88% | 3287 fps | 98.9% |
| Vihtavuori N570 | <<locked>> | 96% | 57,203 psi | 90% | 3353 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,898 psi | 88% | 3268 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 54,346 psi | 85% | 3140 fps | 99.9% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 43,888 psi | 69% | 2933 fps | 99.9% |
| Accurate High Country | <<locked>> | 80% | 48,225 psi | 76% | 3136 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 80% | 45,542 psi | 71% | 3064 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 80% | 47,892 psi | 75% | 3074 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 43,062 psi | 67% | 3005 fps | 97.5% |
| ADI AR 2217 | <<locked>> | 84% | 36,825 psi | 58% | 2848 fps | 95.9% |
| ADI AR 2218 | <<locked>> | 96% | 48,762 psi | 76% | 3209 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 29,472 psi | 46% | 2674 fps | 95.6% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,805 psi | 75% | 3064 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,830 psi | 69% | 3012 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,598 psi | 67% | 2949 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,927 psi | 58% | 2877 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,501 psi | 76% | 3130 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 46,572 psi | 73% | 3120 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,111 psi | 79% | 3182 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 44,425 psi | 70% | 2972 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 40,828 psi | 64% | 2943 fps | 97.9% |
| Bofors RP30 | <<locked>> | 82% | 36,927 psi | 58% | 2867 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 43,830 psi | 69% | 3012 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 80% | 34,882 psi | 55% | 2799 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 80% | 45,672 psi | 72% | 3005 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,831 psi | 70% | 2989 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,576 psi | 81% | 3051 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 35,969 psi | 56% | 2913 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,282 psi | 44% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,490 psi | 84% | 3117 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,157 psi | 85% | 3123 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,644 psi | 73% | 2999 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 80% | 41,785 psi | 65% | 2986 fps | 97.2% |
| IMR 8133 Enduron | <<locked>> | 88% | 35,636 psi | 56% | 2848 fps | 95.3% |
| Lovex S071 | <<locked>> | 80% | 37,782 psi | 59% | 2795 fps | 99.1% |
| Norma 217 | <<locked>> | 84% | 31,241 psi | 49% | 2743 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 46,731 psi | 73% | 3091 fps | 99.8% |
| Ramshot Grand | <<locked>> | 80% | 42,018 psi | 66% | 2999 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 80% | 37,811 psi | 59% | 2861 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,037 psi | 46% | 1913 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,404 psi | 55% | 2887 fps | 98.3% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 40,828 psi | 64% | 2986 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 48,617 psi | 76% | 3045 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 47,413 psi | 74% | 3054 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,094 psi | 74% | 3048 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 49,661 psi | 78% | 3028 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 53,563 psi | 84% | 3117 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,776 psi | 75% | 3025 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 80% | 41,843 psi | 66% | 2890 fps | 98.7% |
| Vihtavuori N170 | <<locked>> | 92% | 53,751 psi | 84% | 3143 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 80% | 47,239 psi | 74% | 3035 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,354 psi | 73% | 3084 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 80% | 38,522 psi | 60% | 2884 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 86% | 41,858 psi | 66% | 3002 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 92% | 49,458 psi | 78% | 3205 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,075 psi | 64% | 3009 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,092 psi | 69% | 2949 fps | 98.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 60 powders for .30-378 Weath. Mag. loaded with the .308 | 165gr | Nosler Ballistic Tip Hunting. ADI AR 2218 delivers the highest muzzle velocity at 3,373 fps; across all powders the maximum-charge window runs from 2,087 fps to 3,373 fps. Accurate 8700 gives the best case fill at 100 %, and 60 of the 60 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 165.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 8700, ADI AR 2218, Alliant Reloder-50 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. As outliers, Accurate 8700, IMR 7977 Enduron, Lovex D100 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.