Load Specifications
Load data in caliber .30 Super Fl. H&H with .308 | 165gr | Sierra SBT GameKing bullet and 25 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Alliant Reloder-26 and ReloadSwiss RS 76.
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% | 39,972 psi | 86% | 2766 fps | 97.7% |
| Accurate 4350 | <<locked>> | 82% | 41,379 psi | 89% | 2815 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 82% | 39,929 psi | 86% | 2822 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 92% | 40,596 psi | 87% | 2851 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 40,306 psi | 87% | 2877 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 88% | 39,218 psi | 85% | 2890 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 40,016 psi | 86% | 2762 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,434 psi | 79% | 1893 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 40,538 psi | 87% | 2746 fps | 96.2% |
| IMR 4831 | <<locked>> | 82% | 39,479 psi | 85% | 2759 fps | 98.9% |
| Lovex S071 | <<locked>> | 96% | 41,046 psi | 88% | 2789 fps | 97.9% |
| Norma MRP | <<locked>> | 90% | 41,974 psi | 90% | 2917 fps | 97.2% |
| Norma URP | <<locked>> | 82% | 40,959 psi | 88% | 2805 fps | 99% |
| Ramshot Hunter | <<locked>> | 82% | 39,769 psi | 86% | 2792 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 80% | 1939 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 41,205 psi | 89% | 2835 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 39,827 psi | 86% | 2844 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,771 psi | 90% | 2953 fps | 97.4% |
| Somchem S365 | <<locked>> | 84% | 39,943 psi | 86% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 41,930 psi | 90% | 2808 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 92% | 41,292 psi | 89% | 2782 fps | 96% |
| Vihtavuori N550 | <<locked>> | 82% | 41,858 psi | 90% | 2805 fps | 99% |
| Vihtavuori N555 | <<locked>> | 88% | 39,755 psi | 86% | 2818 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 41,582 psi | 90% | 2769 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 41,669 psi | 90% | 3012 fps | 100% |
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>> | 84% | 32,460 psi | 70% | 2585 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 38,566 psi | 83% | 2753 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,478 psi | 81% | 2766 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,470 psi | 59% | 2503 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,272 psi | 72% | 2690 fps | 96% |
| Alliant Reloder-26 | 67.7 gr | 80% | 29,385 psi | 63% | 2618 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,911 psi | 75% | 2648 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,238 psi | 59% | 1693 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,116 psi | 82% | 2690 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 37,043 psi | 80% | 2703 fps | 98.4% |
| Lovex S071 | <<locked>> | 90% | 33,750 psi | 73% | 2621 fps | 95.6% |
| Norma MRP | <<locked>> | 86% | 36,521 psi | 79% | 2785 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,247 psi | 82% | 2746 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 80% | 37,043 psi | 80% | 2730 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 60% | 1732 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,305 psi | 83% | 2772 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,115 psi | 80% | 2779 fps | 97.8% |
| ReloadSwiss RS 76 | 79.7 gr | 94% | 36,448 psi | 79% | 2812 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 34,809 psi | 75% | 2703 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 39,436 psi | 85% | 2753 fps | 95.8% |
| Vihtavuori N165 | <<locked>> | 90% | 38,769 psi | 84% | 2726 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 39,175 psi | 84% | 2746 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 30,443 psi | 66% | 2585 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,798 psi | 84% | 2713 fps | 99.8% |
| Winchester StaBALL HD | 65 gr | 80% | 24,279 psi | 52% | 2467 fps | 95.2% |
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 25 powders for .30 Super Fl. H&H loaded with the .308 | 165gr | Sierra SBT GameKing. Winchester StaBALL HD delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,012 fps. Hodgdon TrailBoss 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 165.0 gr projectile in 0.308" calls for a 1:13.5 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. Winchester StaBALL HD, Alliant Reloder-26, ReloadSwiss RS 76 rank at the top here: for .30 Super Fl. H&H with the .308 | 165gr | Sierra SBT GameKing 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.