Load Specifications
Load data in caliber .307 Win. with .308 | 85gr | MAKER Tipped expanding bullet and 23 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Shooters World Buffalo Rifle and Lovex D060.
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>> | 96% | 52,098 psi | 87% | 3241 fps | 96.8% |
| Accurate 5744 | <<locked>> | 82% | 51,430 psi | 85% | 3291 fps | 97.6% |
| Accurate No. 11 FS | <<locked>> | 86% | 54,404 psi | 90% | 3301 fps | 99.8% |
| ADI APS 450 | <<locked>> | 82% | 54,404 psi | 90% | 2562 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 52,112 psi | 87% | 3173 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 48,399 psi | 80% | 3304 fps | 99.4% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 51,430 psi | 85% | 3301 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,776 psi | 48% | 2041 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 43,091 psi | 72% | 3143 fps | 95.8% |
| IMR 4227 | <<locked>> | 96% | 54,230 psi | 90% | 3314 fps | 99.2% |
| Lovex D060 | <<locked>> | 88% | 51,793 psi | 86% | 3301 fps | 97.6% |
| Lovex D063 | <<locked>> | 84% | 52,011 psi | 86% | 3278 fps | 97.8% |
| Lovex S040 | <<locked>> | 82% | 53,432 psi | 89% | 3202 fps | 100% |
| Lovex S053 | <<locked>> | 96% | 51,329 psi | 85% | 3261 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 45,020 psi | 75% | 3232 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,905 psi | 46% | 2080 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 52,808 psi | 88% | 3327 fps | 99% |
| Shooters World Blackout | <<locked>> | 84% | 52,011 psi | 86% | 3278 fps | 97.8% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 51,793 psi | 86% | 3301 fps | 97.6% |
| Shooters World SOCOM | <<locked>> | 88% | 53,330 psi | 89% | 3274 fps | 98.5% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 52,199 psi | 87% | 3123 fps | 100% |
| Vihtavuori N110 | <<locked>> | 92% | 53,722 psi | 89% | 3238 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 48,602 psi | 81% | 3264 fps | 99.9% |
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>> | 92% | 45,426 psi | 75% | 3120 fps | 95.3% |
| Accurate 5744 | <<locked>> | 80% | 48,472 psi | 81% | 3235 fps | 97% |
| Accurate No. 11 FS | <<locked>> | 80% | 44,353 psi | 74% | 3117 fps | 98.9% |
| ADI APS 450 | <<locked>> | 80% | 52,272 psi | 87% | 2526 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 40,654 psi | 68% | 2959 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 88% | 32,735 psi | 54% | 2946 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 94% | 42,482 psi | 71% | 3123 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,624 psi | 34% | 1818 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 40,901 psi | 68% | 3094 fps | 95.1% |
| IMR 4227 | <<locked>> | 82% | 34,954 psi | 58% | 2904 fps | 95% |
| Lovex D060 | 33.1 gr | 82% | 43,337 psi | 72% | 3123 fps | 95.7% |
| Lovex D063 | <<locked>> | 80% | 45,339 psi | 75% | 3146 fps | 96.4% |
| Lovex S040 | <<locked>> | 80% | 50,154 psi | 83% | 3146 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 31,821 psi | 53% | 2831 fps | 97.4% |
| Norma 200 | <<locked>> | 98% | 41,930 psi | 70% | 3163 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,305 psi | 34% | 1864 fps | 100% |
| ReloadSwiss RS 36 | 35.3 gr | 84% | 36,042 psi | 60% | 2969 fps | 95.2% |
| Shooters World Blackout | <<locked>> | 80% | 45,339 psi | 75% | 3146 fps | 96.4% |
| Shooters World Buffalo Rifle | 33.1 gr | 82% | 43,337 psi | 72% | 3123 fps | 95.7% |
| Shooters World SOCOM | <<locked>> | 80% | 40,553 psi | 67% | 3022 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,139 psi | 50% | 2697 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 37,579 psi | 62% | 2943 fps | 100% |
| Vihtavuori N120 | <<locked>> | 84% | 29,182 psi | 48% | 2808 fps | 95.6% |
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 23 powders for .307 Win. loaded with the .308 | 85gr | MAKER Tipped expanding. ReloadSwiss RS 36 delivers the highest muzzle velocity at 3,327 fps; across all powders the maximum-charge window runs from 2,041 fps to 3,327 fps. ADI AR 2207 gives the best case fill at 100 %, and 23 of the 23 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. ADI AR 2207, Alliant Reloder-7, Hodgdon TrailBoss 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. ReloadSwiss RS 36, Shooters World Buffalo Rifle, Lovex D060 rank at the top here: for .307 Win. with the .308 | 85gr | MAKER Tipped expanding 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.