Load Specifications
Load data in caliber .30 Super Fl. H&H with .308 | 146.6gr | Sax KDG-S bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Alliant Reloder-23.
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>> | 96% | 41,365 psi | 89% | 2940 fps | 96.7% |
| Accurate 4350 | <<locked>> | 86% | 40,422 psi | 87% | 2946 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 39,581 psi | 85% | 2959 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 82% | 39,421 psi | 85% | 2979 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 39,479 psi | 85% | 2976 fps | 99.3% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,450 psi | 85% | 2986 fps | 96.7% |
| Alliant Reloder-26 | <<locked>> | 94% | 41,075 psi | 89% | 3081 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 39,276 psi | 85% | 2897 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 77% | 1988 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 41,597 psi | 90% | 2956 fps | 98.3% |
| Lovex S065 | <<locked>> | 84% | 41,234 psi | 89% | 2890 fps | 96.9% |
| Lovex S070 | <<locked>> | 86% | 41,843 psi | 90% | 2920 fps | 95.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,305 psi | 85% | 2894 fps | 96.1% |
| Norma URP | <<locked>> | 86% | 40,263 psi | 87% | 2943 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 88% | 41,974 psi | 90% | 2989 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 78% | 2034 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,989 psi | 90% | 3048 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 40,393 psi | 87% | 2966 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 39,639 psi | 85% | 2979 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,234 psi | 89% | 2890 fps | 96.9% |
| Shooters World SW4350 | <<locked>> | 86% | 41,843 psi | 90% | 2920 fps | 95.9% |
| Somchem S365 | <<locked>> | 90% | 41,669 psi | 90% | 3012 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 40,915 psi | 88% | 2867 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 84% | 39,262 psi | 85% | 2884 fps | 97.5% |
| Vihtavuori N550 | <<locked>> | 86% | 41,379 psi | 89% | 2943 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 94% | 40,886 psi | 88% | 2995 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 41,626 psi | 90% | 2917 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,582 psi | 87% | 3130 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>> | 94% | 38,595 psi | 83% | 2877 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 32,460 psi | 70% | 2746 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,561 psi | 70% | 2769 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,753 psi | 79% | 2913 fps | 98.7% |
| Alliant Reloder-23 | 65.2 gr | 86% | 28,442 psi | 61% | 2664 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,999 psi | 80% | 2920 fps | 95.7% |
| Alliant Reloder-26 | 75 gr | 90% | 35,476 psi | 76% | 2933 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,936 psi | 65% | 2657 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 57% | 1778 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 31,546 psi | 68% | 2703 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 36,303 psi | 78% | 2772 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 39,276 psi | 85% | 2861 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 36,709 psi | 79% | 2831 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,750 psi | 71% | 2753 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 86% | 39,204 psi | 84% | 2923 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 58% | 1821 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,146 psi | 84% | 2982 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,853 psi | 75% | 2831 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 34,432 psi | 74% | 2835 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,303 psi | 78% | 2772 fps | 95.3% |
| Shooters World SW4350 | <<locked>> | 84% | 39,276 psi | 85% | 2861 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 29,370 psi | 63% | 2700 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 38,130 psi | 82% | 2805 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 34,214 psi | 74% | 2759 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 33,779 psi | 73% | 2759 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 86% | 31,082 psi | 67% | 2749 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,765 psi | 73% | 2730 fps | 98% |
| Winchester StaBALL HD | 72 gr | 90% | 28,660 psi | 62% | 2756 fps | 96.2% |
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 28 powders for .30 Super Fl. H&H loaded with the .308 | 146.6gr | Sax KDG-S. Winchester StaBALL HD delivers the highest muzzle velocity at 3,130 fps; across all powders the maximum-charge window runs from 1,988 fps to 3,130 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 28 of the 28 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 77–90 %, leaving at least 10 % headroom. The 146.6 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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. Alliant Reloder-26, Winchester StaBALL HD, Alliant Reloder-23 rank at the top here: for .30 Super Fl. H&H with the .308 | 146.6gr | Sax KDG-S 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.