Load Specifications
Load data in caliber .30 Super Fl. H&H with .308 | 180gr | Speer Deep Curl Soft Point bullet and 25 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% | 40,147 psi | 87% | 2664 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,175 psi | 84% | 2759 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 40,001 psi | 86% | 2687 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,132 psi | 86% | 2736 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 40,973 psi | 88% | 2746 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 40,451 psi | 87% | 2779 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 86% | 39,508 psi | 85% | 2789 fps | 99.5% |
| Bofors RP15 | <<locked>> | 90% | 39,595 psi | 85% | 2723 fps | 95.9% |
| Bofors RP5 | <<locked>> | 88% | 40,132 psi | 86% | 2736 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 40,045 psi | 86% | 2651 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,552 psi | 85% | 2805 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 79% | 1818 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 41,394 psi | 89% | 2690 fps | 98.7% |
| Norma MRP | <<locked>> | 86% | 39,305 psi | 85% | 2749 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 39,363 psi | 85% | 2710 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 81% | 1860 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 41,901 psi | 90% | 2858 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 86% | 41,553 psi | 90% | 2723 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,176 psi | 89% | 2720 fps | 96.5% |
| Somchem S365 | <<locked>> | 82% | 40,277 psi | 87% | 2703 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,407 psi | 85% | 2648 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 90% | 41,524 psi | 89% | 2684 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 86% | 40,161 psi | 87% | 2713 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 39,175 psi | 84% | 2848 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,394 psi | 89% | 2687 fps | 96.4% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 30,690 psi | 66% | 2441 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 96% | 34,432 psi | 74% | 2631 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,420 psi | 81% | 2628 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,478 psi | 81% | 2677 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,501 psi | 64% | 2470 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,385 psi | 63% | 2480 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,821 psi | 69% | 2595 fps | 97.4% |
| Bofors RP15 | <<locked>> | 88% | 37,173 psi | 80% | 2667 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 37,478 psi | 81% | 2677 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,492 psi | 81% | 2598 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,188 psi | 80% | 2743 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,485 psi | 59% | 1624 fps | 100% |
| Lovex S071 | <<locked>> | 84% | 30,023 psi | 65% | 2421 fps | 95.1% |
| Norma MRP | <<locked>> | 82% | 34,156 psi | 74% | 2621 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 90% | 36,564 psi | 79% | 2644 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 60% | 1663 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,084 psi | 73% | 2657 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 38,798 psi | 84% | 2664 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,435 psi | 83% | 2657 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 37,507 psi | 81% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,476 psi | 74% | 2533 fps | 95.1% |
| Vihtavuori N165 | <<locked>> | 86% | 36,419 psi | 78% | 2575 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 80% | 32,880 psi | 71% | 2549 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,107 psi | 56% | 2464 fps | 98.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,609 psi | 83% | 2628 fps | 95.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 25 powders for .30 Super Fl. H&H loaded with the .308 | 180gr | Speer Deep Curl Soft Point. ReloadSwiss RS 76 delivers the highest muzzle velocity at 2,858 fps; across all powders the maximum-charge window runs from 1,818 fps to 2,858 fps. ADI AR 2225 gives the best case fill at 100 %, and 25 of the 25 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 79–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Hodgdon TrailBoss, ReloadSwiss RS 14 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.