Load Specifications
Load data in caliber .307 Win. with .310 | 108gr | Barnes MPG bullet and 25 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% | 53,069 psi | 88% | 2933 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 98% | 52,953 psi | 88% | 2920 fps | 96.8% |
| ADI AR 2205 | <<locked>> | 84% | 52,199 psi | 87% | 2825 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 54,418 psi | 90% | 3041 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 53,403 psi | 89% | 3058 fps | 96.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 38,334 psi | 64% | 2822 fps | 97.4% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 47,906 psi | 80% | 2963 fps | 98.4% |
| Alliant Reloder-7 | <<locked>> | 96% | 53,621 psi | 89% | 2995 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 51,111 psi | 85% | 2904 fps | 96.7% |
| Hodgdon H4198 | <<locked>> | 94% | 51,924 psi | 86% | 2923 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,647 psi | 51% | 1814 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 50,488 psi | 84% | 2963 fps | 99.3% |
| IMR 4227 | <<locked>> | 90% | 52,330 psi | 87% | 2927 fps | 99.9% |
| Lovex D060 | <<locked>> | 84% | 52,620 psi | 87% | 2966 fps | 99.4% |
| Lovex S053 | <<locked>> | 92% | 53,214 psi | 88% | 2923 fps | 100% |
| Norma 200 | <<locked>> | 98% | 51,619 psi | 86% | 3009 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,081 psi | 50% | 1850 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 51,488 psi | 86% | 2953 fps | 99.9% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 52,620 psi | 87% | 2966 fps | 99.4% |
| Shooters World SOCOM | <<locked>> | 84% | 53,388 psi | 89% | 2933 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 54,085 psi | 90% | 2779 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 49,269 psi | 82% | 2966 fps | 96.8% |
| Vihtavuori N110 | <<locked>> | 86% | 52,518 psi | 87% | 2838 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 51,227 psi | 85% | 2946 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 46,325 psi | 77% | 2864 fps | 97.8% |
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>> | 80% | 35,636 psi | 59% | 2598 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 94% | 46,891 psi | 78% | 2815 fps | 95.4% |
| ADI AR 2205 | <<locked>> | 80% | 46,543 psi | 77% | 2736 fps | 100% |
| ADI AR 2207 | 31 gr | 80% | 31,053 psi | 52% | 2579 fps | 97.6% |
| ADI AR 2219 | <<locked>> | 98% | 50,183 psi | 83% | 3005 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 96% | 33,895 psi | 56% | 2707 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 90% | 35,172 psi | 58% | 2697 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 34,867 psi | 58% | 2625 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 44,860 psi | 75% | 2795 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 92% | 48,805 psi | 81% | 2867 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,452 psi | 37% | 1621 fps | 100% |
| IMR 4198 | <<locked>> | 86% | 33,881 psi | 56% | 2612 fps | 95.5% |
| IMR 4227 | <<locked>> | 80% | 38,696 psi | 64% | 2674 fps | 98.5% |
| Lovex D060 | <<locked>> | 80% | 46,572 psi | 77% | 2854 fps | 98.7% |
| Lovex S053 | <<locked>> | 80% | 37,536 psi | 62% | 2644 fps | 99.9% |
| Norma 200 | 34.1 gr | 84% | 33,112 psi | 55% | 2631 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,133 psi | 37% | 1657 fps | 100% |
| ReloadSwiss RS 36 | 32.3 gr | 80% | 37,840 psi | 63% | 2694 fps | 98.1% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,572 psi | 77% | 2854 fps | 98.7% |
| Shooters World SOCOM | <<locked>> | 80% | 46,876 psi | 78% | 2825 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,259 psi | 59% | 2477 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 43,482 psi | 72% | 2858 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 44,237 psi | 73% | 2710 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,227 psi | 52% | 2556 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 92% | 36,419 psi | 61% | 2664 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 25 powders for .307 Win. loaded with the .310 | 108gr | Barnes MPG. ADI AR 2219 delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,058 fps. ADI AR 2219 gives the best case fill at 100 %, and 25 of the 25 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 108.0 gr projectile in 0.31" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2219, Alliant AR-Comp, Alliant Reloder-10x 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 .310 | 108gr | Barnes MPG 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.