Load Specifications
Load data in caliber .307 Win. with .308 | 90gr | Impala LWHV LS bullet and 19 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Norma 200 and ReloadSwiss RS 36.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 92% | 53,388 psi | 89% | 3192 fps | 97.9% |
| ADI AR 2205 | <<locked>> | 84% | 52,663 psi | 87% | 3100 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 54,462 psi | 90% | 3317 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 48,675 psi | 81% | 3232 fps | 97.2% |
| Alliant Reloder-7 | <<locked>> | 96% | 54,317 psi | 90% | 3268 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,053 psi | 52% | 2018 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 50,676 psi | 84% | 3225 fps | 98.4% |
| IMR 4227 | <<locked>> | 90% | 52,301 psi | 87% | 3199 fps | 99.5% |
| Lovex D060 | <<locked>> | 84% | 52,576 psi | 87% | 3238 fps | 98.5% |
| Lovex S053 | <<locked>> | 92% | 53,461 psi | 89% | 3202 fps | 100% |
| Norma 200 | <<locked>> | 98% | 52,547 psi | 87% | 3281 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,850 psi | 51% | 2064 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 51,764 psi | 86% | 3222 fps | 99.4% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 52,576 psi | 87% | 3238 fps | 98.5% |
| Shooters World SOCOM | <<locked>> | 84% | 53,795 psi | 89% | 3205 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 54,244 psi | 90% | 3058 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 53,403 psi | 89% | 3130 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 51,488 psi | 86% | 3222 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 47,137 psi | 78% | 3123 fps | 96.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 41,640 psi | 69% | 2963 fps | 95.3% |
| ADI AR 2205 | <<locked>> | 80% | 46,905 psi | 78% | 2999 fps | 100% |
| ADI AR 2207 | 33.6 gr | 80% | 32,184 psi | 53% | 2831 fps | 96.4% |
| Alliant Reloder-10x | <<locked>> | 94% | 40,741 psi | 68% | 3058 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 84% | 38,348 psi | 64% | 2933 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,090 psi | 38% | 1811 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 38,450 psi | 64% | 2956 fps | 95.4% |
| IMR 4227 | <<locked>> | 80% | 39,204 psi | 65% | 2927 fps | 97.3% |
| Lovex D060 | <<locked>> | 80% | 46,833 psi | 78% | 3120 fps | 97.5% |
| Lovex S053 | <<locked>> | 80% | 38,566 psi | 64% | 2910 fps | 99.5% |
| Norma 200 | 38.7 gr | 88% | 39,349 psi | 65% | 3009 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,829 psi | 38% | 1847 fps | 100% |
| ReloadSwiss RS 36 | 34.9 gr | 80% | 38,377 psi | 64% | 2940 fps | 96.9% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,833 psi | 78% | 3120 fps | 97.5% |
| Shooters World SOCOM | <<locked>> | 80% | 47,181 psi | 78% | 3084 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,216 psi | 60% | 2740 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 45,179 psi | 75% | 2992 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 32,300 psi | 54% | 2808 fps | 97.7% |
| Vihtavuori N130 | <<locked>> | 96% | 41,945 psi | 70% | 3015 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 34 powders for .307 Win. loaded with the .308 | 90gr | Impala LWHV LS. ADI AR 2207 delivers the highest muzzle velocity at 3,317 fps; across all powders the maximum-charge window runs from 2,018 fps to 3,317 fps. Accurate 2015 gives the best case fill at 100 %, and 34 of the 34 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2460, ADI AR 2219 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. ADI AR 2207, Norma 200, ReloadSwiss RS 36 rank at the top here: for .307 Win. with the .308 | 90gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2015, Accurate 2460, Accurate LT-32 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.