Load Specifications
Load data in caliber .30 Super Fl. H&H with .308 | 143gr | TWENTY-NINE SILENTIO bullet and 24 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% | 41,887 psi | 90% | 2972 fps | 96.5% |
| Accurate 4350 | <<locked>> | 86% | 40,959 psi | 88% | 2986 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 39,827 psi | 86% | 2992 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 82% | 39,755 psi | 86% | 3012 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 39,798 psi | 86% | 3009 fps | 99.2% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,769 psi | 86% | 3015 fps | 96.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 41,437 psi | 89% | 3114 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 39,552 psi | 85% | 2930 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 77% | 2011 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 41,989 psi | 90% | 2989 fps | 98.2% |
| Lovex S065 | <<locked>> | 84% | 41,698 psi | 90% | 2923 fps | 96.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,900 psi | 86% | 2930 fps | 95.9% |
| Norma URP | <<locked>> | 86% | 40,567 psi | 87% | 2972 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 79% | 2057 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 40,756 psi | 88% | 3002 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 39,943 psi | 86% | 3009 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,698 psi | 90% | 2923 fps | 96.7% |
| Somchem S365 | <<locked>> | 90% | 41,974 psi | 90% | 3048 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 41,321 psi | 89% | 2900 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 84% | 39,610 psi | 85% | 2917 fps | 97.4% |
| Vihtavuori N550 | <<locked>> | 86% | 41,756 psi | 90% | 2976 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 94% | 41,321 psi | 89% | 3035 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 41,901 psi | 90% | 2946 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,930 psi | 88% | 3163 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% | 39,146 psi | 84% | 2913 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 33,112 psi | 71% | 2789 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,924 psi | 71% | 2802 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,101 psi | 80% | 2946 fps | 98.6% |
| Alliant Reloder-23 | 65.2 gr | 86% | 28,935 psi | 62% | 2700 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,405 psi | 81% | 2953 fps | 95.5% |
| Alliant Reloder-26 | 75 gr | 90% | 35,926 psi | 77% | 2966 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,385 psi | 65% | 2690 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 58% | 1801 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 32,082 psi | 69% | 2743 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 36,811 psi | 79% | 2805 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 37,289 psi | 80% | 2871 fps | 95% |
| Norma URP | <<locked>> | 80% | 33,170 psi | 71% | 2785 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 59% | 1844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,244 psi | 76% | 2867 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 37,391 psi | 81% | 2940 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,811 psi | 79% | 2805 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 29,907 psi | 64% | 2736 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 38,580 psi | 83% | 2841 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 34,606 psi | 75% | 2792 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 34,229 psi | 74% | 2792 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 31,633 psi | 68% | 2789 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,171 psi | 74% | 2762 fps | 97.9% |
| Winchester StaBALL HD | 72 gr | 90% | 29,167 psi | 63% | 2792 fps | 96.1% |
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 24 powders for .30 Super Fl. H&H loaded with the .308 | 143gr | TWENTY-NINE SILENTIO. Winchester StaBALL HD delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 2,011 fps to 3,163 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 24 of the 24 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 143.0 gr projectile in 0.308" calls for a 1:12.0 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 | 143gr | TWENTY-NINE SILENTIO 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.