Load Specifications
Load data in caliber .30 Super Fl. H&H with .308 | 165gr | Barnes X S bullet and 19 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% | 40,059 psi | 86% | 2740 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 82% | 41,684 psi | 90% | 2835 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 40,161 psi | 87% | 2818 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 94% | 39,726 psi | 86% | 2838 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 41,553 psi | 90% | 2920 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 39,479 psi | 85% | 2723 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 80% | 1883 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 41,814 psi | 90% | 2782 fps | 99.2% |
| Lovex S071 | <<locked>> | 94% | 41,263 psi | 89% | 2766 fps | 97.8% |
| Norma MRP | <<locked>> | 88% | 41,249 psi | 89% | 2877 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 82% | 41,698 psi | 90% | 2812 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 94% | 41,263 psi | 89% | 2822 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 81% | 1929 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 41,655 psi | 90% | 2861 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 40,988 psi | 88% | 2904 fps | 96.8% |
| Somchem S365 | <<locked>> | 82% | 39,494 psi | 85% | 2782 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 41,626 psi | 90% | 2772 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 86% | 39,842 psi | 86% | 2792 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 94% | 41,104 psi | 89% | 2976 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 33,272 psi | 72% | 2579 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,247 psi | 85% | 2779 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,834 psi | 64% | 2549 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,402 psi | 72% | 2667 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,894 psi | 69% | 2667 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,072 psi | 80% | 2671 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,673 psi | 60% | 1683 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 39,334 psi | 85% | 2726 fps | 98.8% |
| Lovex S071 | <<locked>> | 86% | 32,576 psi | 70% | 2559 fps | 95% |
| Norma MRP | <<locked>> | 84% | 36,347 psi | 78% | 2753 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,102 psi | 84% | 2753 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 38,638 psi | 83% | 2762 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,268 psi | 61% | 1726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,044 psi | 84% | 2799 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,522 psi | 83% | 2841 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 37,101 psi | 80% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,233 psi | 85% | 2720 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,069 psi | 71% | 2631 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,774 psi | 58% | 2539 fps | 97% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 19 powders for .30 Super Fl. H&H loaded with the .308 | 165gr | Barnes X S. Winchester StaBALL HD delivers the highest muzzle velocity at 2,976 fps; across all powders the maximum-charge window runs from 1,883 fps to 2,976 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 19 of the 19 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 80–90 %, 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. 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.