Load Specifications
Load data in caliber .30 Super Fl. H&H with .308 | 150gr | Barnes X S bullet and 21 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>> | 90% | 40,016 psi | 86% | 2858 fps | 96.5% |
| Accurate 4350 | <<locked>> | 82% | 41,423 psi | 89% | 2910 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 82% | 39,450 psi | 85% | 2907 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 40,016 psi | 86% | 2936 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 96% | 39,871 psi | 86% | 2949 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 41,553 psi | 90% | 3041 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 39,508 psi | 85% | 2851 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,622 psi | 79% | 1975 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 41,945 psi | 90% | 2907 fps | 98.6% |
| Lovex S071 | <<locked>> | 96% | 41,031 psi | 88% | 2877 fps | 96.8% |
| Norma URP | <<locked>> | 82% | 40,567 psi | 87% | 2897 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 84% | 41,887 psi | 90% | 2936 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,347 psi | 80% | 2021 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 40,828 psi | 88% | 2923 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 39,494 psi | 85% | 2923 fps | 97.3% |
| Somchem S365 | <<locked>> | 84% | 39,450 psi | 85% | 2910 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 41,945 psi | 90% | 2890 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 82% | 41,597 psi | 90% | 2897 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 88% | 39,581 psi | 85% | 2913 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 41,162 psi | 89% | 2858 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 40,988 psi | 88% | 3094 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 37,652 psi | 81% | 2802 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 38,740 psi | 83% | 2848 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,159 psi | 80% | 2848 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,166 psi | 61% | 2598 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,476 psi | 76% | 2831 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 84% | 34,142 psi | 74% | 2844 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,925 psi | 75% | 2740 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 59% | 1768 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 37,028 psi | 80% | 2795 fps | 97.4% |
| Lovex S071 | <<locked>> | 92% | 36,477 psi | 79% | 2772 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,159 psi | 82% | 2838 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 80% | 36,985 psi | 80% | 2818 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 61% | 1811 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,130 psi | 82% | 2861 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,956 psi | 80% | 2858 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 34,737 psi | 75% | 2795 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 39,334 psi | 85% | 2831 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 80% | 39,088 psi | 84% | 2838 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 30,893 psi | 67% | 2687 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,537 psi | 83% | 2799 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,818 psi | 58% | 2631 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 21 powders for .30 Super Fl. H&H loaded with the .308 | 150gr | Barnes X S. Winchester StaBALL HD delivers the highest muzzle velocity at 3,094 fps; across all powders the maximum-charge window runs from 1,975 fps to 3,094 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 21 of the 21 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 150.0 gr projectile in 0.308" calls for a 1:13.0 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.