Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 135gr | CutEdge ER Raptor bullet and 70 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>> | 92% | 54,882 psi | 86% | 3386 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,361 psi | 87% | 3432 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,797 psi | 89% | 3560 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 90% | 53,940 psi | 85% | 3484 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 90% | 56,942 psi | 89% | 3497 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 92% | 54,955 psi | 86% | 3497 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,214 psi | 83% | 3448 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,703 psi | 75% | 3389 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,768 psi | 89% | 3504 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,347 psi | 88% | 3481 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,100 psi | 86% | 3491 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,405 psi | 88% | 3465 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,492 psi | 89% | 3533 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 57,464 psi | 90% | 3560 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,608 psi | 89% | 3448 fps | 96.1% |
| Bofors RP15 | <<locked>> | 94% | 54,143 psi | 85% | 3468 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3524 fps | 98.9% |
| Bofors RP5 | <<locked>> | 92% | 55,100 psi | 86% | 3491 fps | 99.2% |
| Bofors RP7 | <<locked>> | 84% | 57,435 psi | 90% | 3435 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 98% | 54,752 psi | 86% | 3478 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 84% | 57,377 psi | 90% | 3497 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 55,956 psi | 88% | 3445 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 90% | 54,607 psi | 86% | 3425 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 57,363 psi | 90% | 3478 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,942 psi | 89% | 3409 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,114 psi | 86% | 3609 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 82% | 54,215 psi | 85% | 3458 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,999 psi | 58% | 2267 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,840 psi | 88% | 3415 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,332 psi | 87% | 3402 fps | 99.7% |
| IMR 4831 | <<locked>> | 86% | 55,883 psi | 88% | 3422 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,405 psi | 87% | 3412 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 94% | 56,753 psi | 89% | 3540 fps | 98.7% |
| Lovex S065 | <<locked>> | 84% | 56,043 psi | 88% | 3402 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,317 psi | 85% | 3392 fps | 99.8% |
| Lovex S071 | <<locked>> | 98% | 56,115 psi | 88% | 3409 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,246 psi | 90% | 3481 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 43,279 psi | 68% | 3297 fps | 98.1% |
| Norma MRP | <<locked>> | 90% | 55,071 psi | 86% | 3510 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 57,653 psi | 90% | 3478 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,606 psi | 84% | 3484 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 86% | 56,840 psi | 89% | 3478 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,753 psi | 89% | 3484 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,753 psi | 59% | 2320 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,854 psi | 88% | 3455 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,404 psi | 85% | 3481 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 56,652 psi | 89% | 3606 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3540 fps | 97.9% |
| Rottweil R 904 | <<locked>> | 90% | 57,740 psi | 90% | 3465 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 55,912 psi | 88% | 3468 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 57,435 psi | 90% | 3435 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,043 psi | 88% | 3402 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,317 psi | 85% | 3392 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,230 psi | 87% | 3343 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,492 psi | 87% | 3465 fps | 99.2% |
| Somchem S361 | <<locked>> | 88% | 55,840 psi | 88% | 3383 fps | 97.9% |
| Somchem S365 | <<locked>> | 86% | 54,694 psi | 86% | 3415 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,304 psi | 88% | 3435 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 56,072 psi | 88% | 3337 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,608 psi | 87% | 3406 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,231 psi | 88% | 3412 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 55,013 psi | 86% | 3409 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,607 psi | 86% | 3435 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,766 psi | 86% | 3504 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 96% | 54,984 psi | 86% | 3478 fps | 98.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3547 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,651 psi | 87% | 3350 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,537 psi | 90% | 3497 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,230 psi | 87% | 3550 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,550 psi | 89% | 3432 fps | 99.3% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 35,766 psi | 56% | 2979 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 48,109 psi | 75% | 3297 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 42,337 psi | 66% | 3248 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 86% | 46,427 psi | 73% | 3327 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 40,103 psi | 63% | 3143 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 86% | 44,280 psi | 69% | 3271 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 42,888 psi | 67% | 3222 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 33,663 psi | 53% | 3015 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,050 psi | 72% | 3307 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,176 psi | 63% | 3136 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 82% | 38,638 psi | 61% | 3127 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,461 psi | 54% | 3015 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 32,039 psi | 50% | 2966 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,551 psi | 60% | 3179 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,011 psi | 83% | 3376 fps | 95.1% |
| Bofors RP15 | <<locked>> | 86% | 41,162 psi | 65% | 3189 fps | 95.9% |
| Bofors RP30 | <<locked>> | 92% | 42,192 psi | 66% | 3232 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 38,638 psi | 61% | 3127 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 50,372 psi | 79% | 3307 fps | 99% |
| Hodgdon H1000 | <<locked>> | 90% | 40,959 psi | 64% | 3179 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 49,908 psi | 78% | 3356 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 52,243 psi | 82% | 3376 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 47,297 psi | 74% | 3278 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 86% | 46,441 psi | 73% | 3261 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,395 psi | 68% | 3169 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 38,609 psi | 61% | 3215 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 50,285 psi | 79% | 3383 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 43% | 2037 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,919 psi | 72% | 3222 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,895 psi | 81% | 3340 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 45,658 psi | 72% | 3232 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 45,469 psi | 71% | 3209 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 42,612 psi | 67% | 3238 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 49,226 psi | 77% | 3274 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 47,630 psi | 75% | 3261 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 32,648 psi | 51% | 2890 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 46,296 psi | 73% | 3264 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 37,347 psi | 59% | 3146 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 37,797 psi | 59% | 3133 fps | 96.3% |
| Norma URP | <<locked>> | 80% | 47,108 psi | 74% | 3284 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 42,569 psi | 67% | 3248 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 46,166 psi | 72% | 3274 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 38,145 psi | 60% | 3097 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,282 psi | 44% | 2087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,312 psi | 76% | 3317 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,804 psi | 73% | 3340 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 35,505 psi | 56% | 3104 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 47,514 psi | 74% | 3373 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 82% | 44,222 psi | 69% | 3189 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 39,378 psi | 62% | 3114 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 50,372 psi | 79% | 3307 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,226 psi | 77% | 3274 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 47,630 psi | 75% | 3261 fps | 99.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,341 psi | 76% | 3215 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,088 psi | 61% | 3110 fps | 95.4% |
| Somchem S361 | <<locked>> | 82% | 45,382 psi | 71% | 3173 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 44,266 psi | 69% | 3228 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,871 psi | 62% | 3094 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 80% | 52,489 psi | 82% | 3278 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,617 psi | 76% | 3281 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 37,086 psi | 58% | 3009 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 47,964 psi | 75% | 3278 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 38,566 psi | 60% | 3107 fps | 99.3% |
| Vihtavuori N560 | <<locked>> | 84% | 43,976 psi | 69% | 3274 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 44,483 psi | 70% | 3258 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 96% | 48,588 psi | 76% | 3389 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,196 psi | 76% | 3225 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,082 psi | 78% | 3360 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,966 psi | 49% | 3022 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 39,392 psi | 62% | 3074 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 74 powders for .30-378 Weath. Mag. loaded with the .308 | 135gr | CutEdge ER Raptor. Hodgdon Retumbo delivers the highest muzzle velocity at 3,609 fps; across all powders the maximum-charge window runs from 2,267 fps to 3,609 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, Alliant Reloder-33, Vihtavuori N170, Vihtavuori N570 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.