Load Specifications
Load data in caliber .30 Super Fl. H&H with .308 | 166gr | Hammer Stone Hammer bullet and 31 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 Norma MRP.
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>> | 92% | 40,364 psi | 87% | 2769 fps | 97.7% |
| Accurate 4350 | <<locked>> | 84% | 41,945 psi | 90% | 2822 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 40,770 psi | 88% | 2835 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 41,104 psi | 89% | 2858 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 40,944 psi | 88% | 2884 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 90% | 39,842 psi | 86% | 2900 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 41,350 psi | 89% | 2815 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 40,814 psi | 88% | 2772 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 82% | 40,451 psi | 87% | 2828 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,260 psi | 78% | 1880 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 41,423 psi | 89% | 2759 fps | 96.4% |
| IMR 4831 | <<locked>> | 84% | 40,263 psi | 87% | 2772 fps | 99% |
| Lovex S070 | <<locked>> | 82% | 40,393 psi | 87% | 2740 fps | 96.9% |
| Lovex S071 | <<locked>> | 98% | 41,307 psi | 89% | 2789 fps | 97.9% |
| Norma MRP | <<locked>> | 90% | 39,697 psi | 86% | 2858 fps | 96.5% |
| Norma URP | <<locked>> | 84% | 41,727 psi | 90% | 2815 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 84% | 40,538 psi | 87% | 2805 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 79% | 1923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 41,901 psi | 90% | 2844 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 40,727 psi | 88% | 2858 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,624 psi | 85% | 2890 fps | 96.5% |
| Shooters World SW4350 | <<locked>> | 82% | 40,393 psi | 87% | 2740 fps | 96.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,423 psi | 89% | 2700 fps | 97% |
| Somchem S365 | <<locked>> | 86% | 40,654 psi | 88% | 2828 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 39,943 psi | 86% | 2759 fps | 96% |
| Vihtavuori N160 | <<locked>> | 82% | 40,582 psi | 87% | 2759 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 82% | 39,827 psi | 86% | 2756 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 90% | 40,277 psi | 87% | 2825 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 39,827 psi | 86% | 2726 fps | 99.9% |
| Winchester 760 | <<locked>> | 82% | 41,553 psi | 90% | 2818 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 39,450 psi | 85% | 2956 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>> | 86% | 32,590 psi | 70% | 2589 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 36,361 psi | 78% | 2700 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,752 psi | 77% | 2717 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,933 psi | 56% | 2448 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,444 psi | 68% | 2631 fps | 95% |
| Alliant Reloder-26 | 68 gr | 82% | 29,675 psi | 64% | 2621 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 38,580 psi | 83% | 2753 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,199 psi | 72% | 2602 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 80% | 37,565 psi | 81% | 2759 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,021 psi | 58% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 38,885 psi | 84% | 2703 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 35,085 psi | 76% | 2654 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 37,710 psi | 81% | 2677 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 33,779 psi | 73% | 2618 fps | 95.6% |
| Norma MRP | 70.8 gr | 88% | 37,014 psi | 80% | 2792 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 36,332 psi | 78% | 2697 fps | 98% |
| Ramshot Hunter | <<locked>> | 80% | 35,288 psi | 76% | 2684 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 59% | 1719 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,332 psi | 78% | 2720 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,317 psi | 76% | 2726 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,956 psi | 80% | 2818 fps | 95.2% |
| Shooters World SW4350 | <<locked>> | 80% | 37,710 psi | 81% | 2677 fps | 96.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,638 psi | 83% | 2641 fps | 96.2% |
| Somchem S365 | <<locked>> | 80% | 32,837 psi | 71% | 2651 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 37,420 psi | 81% | 2700 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 80% | 37,797 psi | 81% | 2697 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 80% | 37,347 psi | 80% | 2700 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 28,427 psi | 61% | 2526 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,072 psi | 80% | 2667 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 38,725 psi | 83% | 2756 fps | 96.2% |
| Winchester StaBALL HD | 65.3 gr | 82% | 24,323 psi | 52% | 2467 fps | 95.1% |
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 31 powders for .30 Super Fl. H&H loaded with the .308 | 166gr | Hammer Stone Hammer. Winchester StaBALL HD delivers the highest muzzle velocity at 2,956 fps; across all powders the maximum-charge window runs from 1,880 fps to 2,956 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 31 of the 31 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 78–90 %, leaving at least 10 % headroom. The 166.0 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. Winchester StaBALL HD, Alliant Reloder-26, Norma MRP rank at the top here: for .30 Super Fl. H&H with the .308 | 166gr | Hammer Stone Hammer 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.