Load Specifications
Load data in caliber .30-378 Weath. Mag. with .308 | 200gr | Frontier PH HPFB bullet and 51 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>> | 84% | 55,753 psi | 87% | 2887 fps | 100% |
| Accurate 8700ᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2933 fps | 98% |
| Accurate MAGPRO | <<locked>> | 82% | 54,781 psi | 86% | 3002 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 82% | 56,478 psi | 89% | 2972 fps | 100% |
| ADI AR 2213 | <<locked>> | 84% | 55,419 psi | 87% | 2999 fps | 100% |
| ADI AR 2217 | <<locked>> | 92% | 54,839 psi | 86% | 2982 fps | 100% |
| ADI AR 2218 | <<locked>> | 96% | 55,143 psi | 86% | 3117 fps | 99.4% |
| ADI AR 2225 | <<locked>> | 94% | 54,447 psi | 85% | 3009 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 56,144 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 84% | 56,014 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 84% | 54,404 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 88% | 55,085 psi | 86% | 2972 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 57,348 psi | 90% | 3091 fps | 99.4% |
| Alliant Reloder-50 | <<locked>> | 98% | 57,522 psi | 90% | 3087 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 55,477 psi | 87% | 2956 fps | 99.2% |
| Bofors RP15 | <<locked>> | 86% | 55,434 psi | 87% | 2982 fps | 100% |
| Bofors RP30 | <<locked>> | 90% | 54,940 psi | 86% | 2995 fps | 100% |
| Bofors RP5 | <<locked>> | 84% | 56,014 psi | 88% | 2992 fps | 100% |
| Hodgdon H1000 | <<locked>> | 90% | 56,275 psi | 88% | 3002 fps | 100% |
| Hodgdon H4831 | <<locked>> | 82% | 54,128 psi | 85% | 2927 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 56,811 psi | 89% | 2969 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 54,795 psi | 86% | 3068 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,014 psi | 60% | 1903 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 54,244 psi | 85% | 2904 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 84% | 54,114 psi | 85% | 2982 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 90% | 56,391 psi | 88% | 2913 fps | 96.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 57,276 psi | 90% | 3051 fps | 100% |
| Lovex D100 | <<locked>> | 94% | 57,537 psi | 90% | 2966 fps | 96% |
| Lovex S071 | <<locked>> | 88% | 54,259 psi | 85% | 2867 fps | 100% |
| Norma 217 | <<locked>> | 96% | 54,911 psi | 86% | 3012 fps | 100% |
| Norma MRP | <<locked>> | 82% | 56,173 psi | 88% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 55,492 psi | 87% | 3005 fps | 100% |
| Ramshot Magnum | <<locked>> | 86% | 53,751 psi | 84% | 2930 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,059 psi | 61% | 1946 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 55,274 psi | 87% | 3051 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 54,447 psi | 85% | 3025 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 82% | 56,840 psi | 89% | 2943 fps | 100% |
| Rottweil R 905 | <<locked>> | 82% | 56,028 psi | 88% | 2956 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 94% | 57,537 psi | 90% | 2966 fps | 96% |
| SNPE Vectan SP 13ᴾ | <<locked>> | 100% | 52,982 psi | 83% | 2943 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 55,666 psi | 87% | 2953 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 56,333 psi | 88% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 56,478 psi | 89% | 2913 fps | 100% |
| Vihtavuori N170 | <<locked>> | 90% | 55,825 psi | 87% | 2953 fps | 98% |
| Vihtavuori N555 | <<locked>> | 82% | 56,130 psi | 88% | 2920 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 55,477 psi | 87% | 3012 fps | 100% |
| Vihtavuori N565 | <<locked>> | 88% | 56,797 psi | 89% | 3012 fps | 100% |
| Vihtavuori N568 | <<locked>> | 90% | 54,911 psi | 86% | 3028 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 92% | 56,347 psi | 88% | 3094 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 84% | 55,332 psi | 87% | 2986 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 56,115 psi | 88% | 2923 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 48,733 psi | 76% | 2779 fps | 100% |
| Accurate 8700 | <<locked>> | 94% | 41,017 psi | 64% | 2736 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 80% | 51,082 psi | 80% | 2940 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 80% | 52,953 psi | 83% | 2917 fps | 100% |
| ADI AR 2213 | <<locked>> | 80% | 48,269 psi | 76% | 2874 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 80% | 36,100 psi | 57% | 2621 fps | 97.8% |
| ADI AR 2218 | <<locked>> | 88% | 41,176 psi | 65% | 2825 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 80% | 33,417 psi | 52% | 2595 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 80% | 52,591 psi | 82% | 2907 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 80% | 49,023 psi | 77% | 2874 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 47,819 psi | 75% | 2792 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 41,945 psi | 66% | 2753 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 84% | 39,508 psi | 62% | 2746 fps | 95.2% |
| Alliant Reloder-50 | <<locked>> | 90% | 42,830 psi | 67% | 2815 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 45,745 psi | 72% | 2782 fps | 97.5% |
| Bofors RP15 | <<locked>> | 80% | 45,643 psi | 72% | 2812 fps | 99.8% |
| Bofors RP30 | <<locked>> | 80% | 39,102 psi | 61% | 2697 fps | 98.5% |
| Bofors RP5 | <<locked>> | 80% | 49,023 psi | 77% | 2874 fps | 100% |
| Hodgdon H1000 | <<locked>> | 80% | 39,320 psi | 62% | 2697 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 80% | 50,604 psi | 79% | 2867 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 49,676 psi | 78% | 2851 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 80% | 41,031 psi | 64% | 2818 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,616 psi | 45% | 1703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 51,010 psi | 80% | 2848 fps | 99.7% |
| IMR 7828 SSC | <<locked>> | 80% | 47,050 psi | 74% | 2858 fps | 99.6% |
| IMR 7977 Enduron | <<locked>> | 86% | 49,617 psi | 78% | 2795 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 80% | 31,096 psi | 49% | 2513 fps | 95.5% |
| Lovex D100 | <<locked>> | 92% | 53,679 psi | 84% | 2904 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 42,163 psi | 66% | 2661 fps | 100% |
| Norma 217 | <<locked>> | 80% | 31,444 psi | 49% | 2539 fps | 98% |
| Norma MRP | <<locked>> | 80% | 52,315 psi | 82% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 47,877 psi | 75% | 2877 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 43,149 psi | 68% | 2749 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,457 psi | 46% | 1742 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 40,654 psi | 64% | 2795 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 37,362 psi | 59% | 2684 fps | 96.7% |
| Rottweil R 904 | <<locked>> | 80% | 53,243 psi | 83% | 2887 fps | 100% |
| Rottweil R 905 | <<locked>> | 80% | 52,547 psi | 82% | 2900 fps | 100% |
| Shooters World 50 BMG | <<locked>> | 92% | 53,679 psi | 84% | 2904 fps | 95.1% |
| SNPE Vectan SP 13 | <<locked>> | 94% | 43,236 psi | 68% | 2759 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 52,199 psi | 82% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 52,794 psi | 83% | 2871 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 46,325 psi | 73% | 2753 fps | 100% |
| Vihtavuori N170 | <<locked>> | 84% | 45,643 psi | 72% | 2769 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 80% | 52,547 psi | 82% | 2867 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 51,706 psi | 81% | 2949 fps | 99.8% |
| Vihtavuori N565 | <<locked>> | 80% | 43,395 psi | 68% | 2769 fps | 98.9% |
| Vihtavuori N568 | <<locked>> | 80% | 38,479 psi | 60% | 2703 fps | 96.5% |
| Vihtavuori N570 | <<locked>> | 84% | 42,395 psi | 66% | 2825 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 47,718 psi | 75% | 2871 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 48,878 psi | 77% | 2808 fps | 100% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 56 powders for .30-378 Weath. Mag. loaded with the .308 | 200gr | Frontier PH HPFB. ADI AR 2218 delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,903 fps to 3,117 fps. Accurate 8700 gives the best case fill at 100 %, and 56 of the 56 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, Hodgdon US 869 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, Hodgdon 50BMG, Vihtavuori 20N29 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.