Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 140gr | Lehigh Defense Controlled Chaos bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Accurate MAGPRO.
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% | 56,507 psi | 89% | 3363 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,826 psi | 89% | 3399 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 55,376 psi | 87% | 3461 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 86% | 54,157 psi | 85% | 3399 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 90% | 56,231 psi | 88% | 3471 fps | 98.9% |
| ADI AR 2217 | <<locked>> | 98% | 54,810 psi | 86% | 3432 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,229 psi | 83% | 3451 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,725 psi | 90% | 3465 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,421 psi | 90% | 3448 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 56,637 psi | 89% | 3468 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 54,520 psi | 85% | 3376 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 54,563 psi | 86% | 3442 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 55,114 psi | 86% | 3461 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,884 psi | 89% | 3517 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,130 psi | 90% | 3415 fps | 96.9% |
| Bofors RP15 | <<locked>> | 92% | 55,825 psi | 87% | 3448 fps | 99.5% |
| Bofors RP30 | <<locked>> | 96% | 54,476 psi | 85% | 3442 fps | 99% |
| Bofors RP5 | <<locked>> | 90% | 56,637 psi | 89% | 3468 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 96% | 56,376 psi | 88% | 3461 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 88% | 55,550 psi | 87% | 3396 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 54,418 psi | 85% | 3376 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 54,317 psi | 85% | 3314 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,363 psi | 90% | 3596 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,347 psi | 59% | 2251 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,652 psi | 89% | 3383 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 57,029 psi | 89% | 3386 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,115 psi | 88% | 3376 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 90% | 54,389 psi | 85% | 3445 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,675 psi | 76% | 3340 fps | 97.9% |
| Lovex S065 | <<locked>> | 82% | 56,753 psi | 89% | 3363 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 55,129 psi | 86% | 3356 fps | 99.9% |
| Lovex S071 | <<locked>> | 94% | 54,375 psi | 85% | 3327 fps | 100% |
| Norma 204 | <<locked>> | 82% | 54,157 psi | 85% | 3376 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 3369 fps | 99.6% |
| Norma MRP | <<locked>> | 88% | 56,608 psi | 89% | 3484 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,926 psi | 86% | 3376 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 55,506 psi | 87% | 3471 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 82% | 54,114 psi | 85% | 3379 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 54,230 psi | 85% | 3389 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,290 psi | 60% | 2300 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,087 psi | 89% | 3419 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,709 psi | 87% | 3451 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 54,375 psi | 85% | 3507 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 53,954 psi | 85% | 3451 fps | 97.9% |
| Rottweil R 904 | <<locked>> | 86% | 54,868 psi | 86% | 3363 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 88% | 57,029 psi | 89% | 3438 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,753 psi | 89% | 3363 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 55,129 psi | 86% | 3356 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,811 psi | 87% | 3304 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 56,623 psi | 89% | 3432 fps | 99.6% |
| Somchem S361 | <<locked>> | 86% | 56,565 psi | 89% | 3350 fps | 98.5% |
| Somchem S365 | <<locked>> | 84% | 56,304 psi | 88% | 3383 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 57,537 psi | 90% | 3406 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 56,608 psi | 89% | 3369 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,421 psi | 90% | 3383 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 82% | 55,825 psi | 87% | 3369 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 56,289 psi | 88% | 3406 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,101 psi | 88% | 3481 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 94% | 57,000 psi | 89% | 3465 fps | 98.9% |
| Vihtavuori N568 | <<locked>> | 96% | 54,476 psi | 85% | 3458 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,289 psi | 88% | 3307 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 53,693 psi | 84% | 3458 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,609 psi | 90% | 3399 fps | 99.6% |
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% | 40,030 psi | 63% | 3038 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 52,910 psi | 83% | 3333 fps | 100% |
| Accurate MAGPRO | 101 gr | 82% | 44,657 psi | 70% | 3235 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 43,947 psi | 69% | 3186 fps | 97.3% |
| ADI AR 2213 | <<locked>> | 82% | 42,322 psi | 66% | 3176 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 41,379 psi | 65% | 3140 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 86% | 32,822 psi | 51% | 2946 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,473 psi | 79% | 3340 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,947 psi | 69% | 3179 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,059 psi | 63% | 3114 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,624 psi | 61% | 3064 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,359 psi | 52% | 2963 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,671 psi | 68% | 3241 fps | 99.9% |
| Alliant Reloder-33 | <<locked>> | 98% | 52,649 psi | 83% | 3435 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 50,357 psi | 79% | 3284 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 37,144 psi | 58% | 3035 fps | 95% |
| Bofors RP30 | <<locked>> | 88% | 41,133 psi | 64% | 3156 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 40,059 psi | 63% | 3114 fps | 96.3% |
| Hodgdon H1000 | <<locked>> | 86% | 39,407 psi | 62% | 3094 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 82% | 45,063 psi | 71% | 3182 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 44,237 psi | 69% | 3163 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,529 psi | 74% | 3199 fps | 100% |
| Hodgdon Retumbo | 97.8 gr | 84% | 37,492 psi | 59% | 3136 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,978 psi | 44% | 2021 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,647 psi | 78% | 3251 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 49,966 psi | 78% | 3264 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,236 psi | 68% | 3110 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 82% | 40,901 psi | 64% | 3150 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 94% | 39,407 psi | 62% | 3127 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 53,214 psi | 83% | 3301 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,677 psi | 81% | 3291 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 34,389 psi | 54% | 2890 fps | 96.9% |
| Norma 204 | <<locked>> | 80% | 50,517 psi | 79% | 3304 fps | 98.6% |
| Norma 217 | <<locked>> | 90% | 34,418 psi | 54% | 3009 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 42,409 psi | 66% | 3196 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 51,372 psi | 81% | 3314 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 40,901 psi | 64% | 3159 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 50,531 psi | 79% | 3310 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 34,098 psi | 53% | 2940 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,660 psi | 45% | 2067 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 53,258 psi | 83% | 3353 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,706 psi | 81% | 3379 fps | 100% |
| ReloadSwiss RS 76 | 102.2 gr | 82% | 34,432 psi | 54% | 3028 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 46,195 psi | 72% | 3291 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 44,962 psi | 70% | 3159 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 80% | 43,439 psi | 68% | 3166 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 53,214 psi | 83% | 3301 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,677 psi | 81% | 3291 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,141 psi | 82% | 3238 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,091 psi | 68% | 3159 fps | 97.3% |
| Somchem S361 | <<locked>> | 80% | 46,108 psi | 72% | 3146 fps | 96.2% |
| Somchem S365 | <<locked>> | 80% | 48,892 psi | 77% | 3258 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,106 psi | 69% | 3143 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 80% | 52,808 psi | 83% | 3304 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,261 psi | 60% | 2992 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 80% | 52,330 psi | 82% | 3307 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,091 psi | 68% | 3159 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,235 psi | 66% | 3182 fps | 95% |
| Vihtavuori N565 | <<locked>> | 86% | 43,163 psi | 68% | 3179 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 92% | 47,137 psi | 74% | 3307 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,446 psi | 82% | 3248 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,085 psi | 57% | 3100 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,524 psi | 64% | 3054 fps | 96.5% |
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 63 powders for .30-378 Weath. Mag. loaded with the .308 | 140gr | Lehigh Defense Controlled Chaos. Hodgdon Retumbo delivers the highest muzzle velocity at 3,596 fps; across all powders the maximum-charge window runs from 2,251 fps to 3,596 fps. ADI AR 2225 gives the best case fill at 100 %, and 63 of the 63 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 140.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-33, 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, ReloadSwiss RS 76, Accurate MAGPRO rank at the top here: for .30-378 Weath. Mag. with the .308 | 140gr | Lehigh Defense Controlled Chaos 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.