Load Specifications
Load data in caliber .307 Win. with .308 | 95gr | AERO SUB-I,- smax:11.30 bullet and 22 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Alliant Reloder-7 and Accurate 1680.
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>> | 94% | 51,793 psi | 86% | 3091 fps | 97.8% |
| Accurate 5744 | <<locked>> | 82% | 54,447 psi | 90% | 3192 fps | 98.9% |
| Accurate No. 11 FS | <<locked>> | 84% | 54,041 psi | 90% | 3130 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 51,590 psi | 86% | 3005 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 52,286 psi | 87% | 3209 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 42,728 psi | 71% | 3045 fps | 96.1% |
| Alliant Reloder-7 | <<locked>> | 98% | 51,634 psi | 86% | 3150 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,283 psi | 49% | 1929 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 46,296 psi | 77% | 3068 fps | 97.8% |
| IMR 4227 | <<locked>> | 94% | 54,172 psi | 90% | 3150 fps | 99.7% |
| Lovex D060 | <<locked>> | 86% | 51,692 psi | 86% | 3143 fps | 98.6% |
| Lovex D063 | <<locked>> | 82% | 51,503 psi | 86% | 3114 fps | 98.6% |
| Lovex S053 | <<locked>> | 94% | 51,822 psi | 86% | 3100 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 48,689 psi | 81% | 3150 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,790 psi | 48% | 1972 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 53,185 psi | 88% | 3176 fps | 99.6% |
| Shooters World Blackout | <<locked>> | 82% | 51,503 psi | 86% | 3114 fps | 98.6% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 51,692 psi | 86% | 3143 fps | 98.6% |
| Shooters World SOCOM | <<locked>> | 86% | 52,895 psi | 88% | 3110 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 52,301 psi | 87% | 2956 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 54,186 psi | 90% | 3068 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 52,518 psi | 87% | 3166 fps | 100% |
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 | 39.1 gr | 88% | 42,409 psi | 70% | 2917 fps | 95.8% |
| Accurate 5744 | <<locked>> | 80% | 50,937 psi | 85% | 3127 fps | 98.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 47,079 psi | 78% | 3012 fps | 99.7% |
| ADI AR 2205 | <<locked>> | 80% | 43,004 psi | 71% | 2858 fps | 100% |
| ADI AR 2207 | <<locked>> | 82% | 29,254 psi | 49% | 2703 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 98% | 40,074 psi | 67% | 2986 fps | 95.3% |
| Alliant Reloder-7 | 36.2 gr | 88% | 37,710 psi | 63% | 2867 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,393 psi | 36% | 1729 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 36,564 psi | 61% | 2848 fps | 95% |
| IMR 4227 | <<locked>> | 80% | 35,244 psi | 59% | 2769 fps | 96.4% |
| Lovex D060 | <<locked>> | 80% | 43,076 psi | 72% | 2966 fps | 96.9% |
| Lovex D063 | <<locked>> | 80% | 48,066 psi | 80% | 3051 fps | 98.1% |
| Lovex S053 | <<locked>> | 80% | 34,040 psi | 57% | 2746 fps | 98.9% |
| Norma 200 | <<locked>> | 92% | 37,536 psi | 62% | 2917 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,914 psi | 35% | 1765 fps | 100% |
| ReloadSwiss RS 36 | 33.1 gr | 80% | 33,997 psi | 56% | 2776 fps | 95.8% |
| Shooters World Blackout | <<locked>> | 80% | 48,066 psi | 80% | 3051 fps | 98.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 43,076 psi | 72% | 2966 fps | 96.9% |
| Shooters World SOCOM | <<locked>> | 80% | 43,047 psi | 72% | 2930 fps | 97.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,995 psi | 53% | 2592 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 40,379 psi | 67% | 2841 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 27,717 psi | 46% | 2628 fps | 96.3% |
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 22 powders for .307 Win. loaded with the .308 | 95gr | AERO SUB-I,- smax:11.30. ADI AR 2207 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,209 fps. ADI AR 2207 gives the best case fill at 100 %, and 22 of the 22 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 95.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, Alliant Reloder-10x, 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, Alliant Reloder-7, Accurate 1680 rank at the top here: for .307 Win. with the .308 | 95gr | AERO SUB-I,- smax:11.30 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.