Load Specifications
Load data in caliber .307 Win. with .310 | 108gr | Barnes RRLP bullet and 26 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-7, ADI AR 2207 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 92% | 52,402 psi | 87% | 2913 fps | 98.7% |
| Accurate LT-30 | <<locked>> | 98% | 52,315 psi | 87% | 2900 fps | 96.5% |
| Accurate No. 11 FS | <<locked>> | 82% | 54,201 psi | 90% | 2927 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 51,721 psi | 86% | 2808 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 53,519 psi | 89% | 3022 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 52,475 psi | 87% | 3035 fps | 96.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,884 psi | 63% | 2802 fps | 97% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 47,152 psi | 78% | 2943 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 96% | 52,881 psi | 88% | 2972 fps | 99.3% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 53,751 psi | 89% | 2936 fps | 97% |
| Hodgdon H4198 | <<locked>> | 96% | 54,447 psi | 90% | 2956 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,313 psi | 50% | 1801 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 49,777 psi | 83% | 2943 fps | 99.2% |
| IMR 4227 | <<locked>> | 92% | 54,447 psi | 90% | 2953 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 51,706 psi | 86% | 2940 fps | 99.2% |
| Lovex S053 | <<locked>> | 92% | 52,330 psi | 87% | 2904 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 53,679 psi | 89% | 3035 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,037 psi | 50% | 1844 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 53,940 psi | 90% | 2986 fps | 99.9% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 51,706 psi | 86% | 2940 fps | 99.2% |
| Shooters World SOCOM | <<locked>> | 84% | 52,634 psi | 87% | 2913 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 53,084 psi | 88% | 2762 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 48,544 psi | 81% | 2946 fps | 96.4% |
| Vihtavuori N110 | <<locked>> | 86% | 51,808 psi | 86% | 2822 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 53,621 psi | 89% | 2976 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 45,658 psi | 76% | 2844 fps | 97.6% |
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>> | 82% | 37,521 psi | 62% | 2635 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 94% | 46,238 psi | 77% | 2795 fps | 95.1% |
| Accurate No. 11 FS | <<locked>> | 80% | 50,908 psi | 85% | 2877 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 45,687 psi | 76% | 2713 fps | 100% |
| ADI AR 2207 | 30.5 gr | 80% | 30,472 psi | 51% | 2559 fps | 97.3% |
| ADI AR 2219 | <<locked>> | 98% | 49,240 psi | 82% | 2976 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 96% | 33,402 psi | 55% | 2687 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 92% | 36,738 psi | 61% | 2730 fps | 95.5% |
| Alliant Reloder-7 | 32.4 gr | 82% | 34,418 psi | 57% | 2608 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 47,094 psi | 78% | 2828 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 94% | 51,155 psi | 85% | 2900 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,307 psi | 37% | 1611 fps | 100% |
| IMR 4198 | <<locked>> | 86% | 33,489 psi | 56% | 2592 fps | 95.2% |
| IMR 4227 | <<locked>> | 80% | 38,145 psi | 63% | 2654 fps | 98.3% |
| Lovex D060 | <<locked>> | 80% | 46,021 psi | 76% | 2835 fps | 98.5% |
| Lovex S053 | <<locked>> | 80% | 37,260 psi | 62% | 2631 fps | 99.9% |
| Norma 200 | <<locked>> | 86% | 34,461 psi | 57% | 2661 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,988 psi | 37% | 1647 fps | 100% |
| ReloadSwiss RS 36 | 31.7 gr | 80% | 37,043 psi | 62% | 2667 fps | 97.9% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,021 psi | 76% | 2835 fps | 98.5% |
| Shooters World SOCOM | <<locked>> | 80% | 46,064 psi | 77% | 2802 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 34,896 psi | 58% | 2467 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 45,600 psi | 76% | 2890 fps | 95.7% |
| Vihtavuori N110 | <<locked>> | 80% | 43,482 psi | 72% | 2690 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 30,719 psi | 51% | 2536 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 94% | 38,145 psi | 63% | 2694 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 26 powders for .307 Win. loaded with the .310 | 108gr | Barnes RRLP. ADI AR 2219 delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,035 fps. ADI AR 2219 gives the best case fill at 100 %, and 26 of the 26 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 1:14.0 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. Alliant Reloder-7, ADI AR 2207, ReloadSwiss RS 36 rank at the top here: for .307 Win. with the .310 | 108gr | Barnes RRLP 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.