Load Specifications
Load data in caliber .307 Win. with .308 | 135gr | Atomic 29 FNHP bullet and 43 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, SNPE Vectan SP 10 and Hodgdon H335.
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>> | 88% | 53,084 psi | 88% | 2654 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 49,008 psi | 81% | 2677 fps | 99.4% |
| Accurate 2460 | <<locked>> | 98% | 51,285 psi | 85% | 2730 fps | 97.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,593 psi | 61% | 2530 fps | 97.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,747 psi | 79% | 2710 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 94% | 53,708 psi | 89% | 2664 fps | 99% |
| Accurate LT-32 | <<locked>> | 94% | 54,288 psi | 90% | 2674 fps | 97.6% |
| ADI AR 2207 | <<locked>> | 92% | 52,736 psi | 88% | 2707 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,401 psi | 85% | 2756 fps | 98.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,223 psi | 75% | 2700 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 53,142 psi | 88% | 2756 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,605 psi | 86% | 2674 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 52,170 psi | 87% | 2657 fps | 99% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 51,924 psi | 86% | 2687 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 98% | 52,634 psi | 87% | 2772 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 98% | 54,099 psi | 90% | 2792 fps | 98.2% |
| Hodgdon H4198 | <<locked>> | 90% | 52,533 psi | 87% | 2664 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,720 psi | 53% | 1634 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,033 psi | 71% | 2674 fps | 97.9% |
| IMR 4198 | <<locked>> | 96% | 51,634 psi | 86% | 2690 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,576 psi | 87% | 2635 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,489 psi | 87% | 2753 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 98% | 51,430 psi | 85% | 2726 fps | 96.2% |
| Lovex S053 | <<locked>> | 88% | 54,041 psi | 90% | 2628 fps | 100% |
| Norma 200 | <<locked>> | 94% | 53,258 psi | 88% | 2740 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 43,801 psi | 73% | 2628 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,241 psi | 52% | 1667 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,083 psi | 87% | 2664 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,141 psi | 87% | 2740 fps | 96.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 47,703 psi | 79% | 2664 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 92% | 52,489 psi | 87% | 2753 fps | 97.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 51,866 psi | 86% | 2451 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,909 psi | 86% | 2756 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,242 psi | 85% | 2720 fps | 99.2% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,718 psi | 79% | 2602 fps | 96.9% |
| Somchem S321ᴾ | <<locked>> | 100% | 53,156 psi | 88% | 2776 fps | 95.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,006 psi | 76% | 2602 fps | 97.5% |
| Vihtavuori N110 | <<locked>> | 82% | 52,939 psi | 88% | 2533 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 52,837 psi | 88% | 2661 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 53,795 psi | 89% | 2703 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,775 psi | 78% | 2608 fps | 99% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,566 psi | 64% | 2549 fps | 97.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,495 psi | 69% | 2559 fps | 95.9% |
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>> | 80% | 40,756 psi | 68% | 2457 fps | 98.9% |
| Accurate 2015 | <<locked>> | 86% | 31,285 psi | 52% | 2336 fps | 95.3% |
| Accurate 2460 | <<locked>> | 92% | 41,553 psi | 69% | 2566 fps | 95.2% |
| Accurate 2495 | <<locked>> | 94% | 29,675 psi | 49% | 2369 fps | 95.1% |
| Accurate 2520 | <<locked>> | 98% | 44,251 psi | 74% | 2651 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 82% | 37,028 psi | 62% | 2375 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 88% | 45,121 psi | 75% | 2526 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 36,230 psi | 60% | 2434 fps | 100% |
| ADI AR 2219 | 35.7 gr | 84% | 36,448 psi | 61% | 2477 fps | 95% |
| Alliant AR-Comp | <<locked>> | 82% | 25,498 psi | 42% | 2241 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,081 psi | 50% | 2316 fps | 96.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,681 psi | 63% | 2434 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 35,070 psi | 58% | 2352 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 98% | 48,921 psi | 81% | 2641 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 88% | 37,913 psi | 63% | 2510 fps | 95.5% |
| Hodgdon H335 | 39.6 gr | 90% | 41,104 psi | 68% | 2575 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 38,450 psi | 64% | 2415 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,177 psi | 39% | 1457 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 35,505 psi | 59% | 2513 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 32,227 psi | 54% | 2326 fps | 97.8% |
| IMR 4227 | <<locked>> | 80% | 43,656 psi | 73% | 2500 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 45,252 psi | 75% | 2635 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 96% | 47,790 psi | 79% | 2671 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 42,670 psi | 71% | 2461 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,779 psi | 56% | 2395 fps | 98.1% |
| Norma 202 | <<locked>> | 98% | 41,075 psi | 68% | 2579 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,916 psi | 38% | 1486 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,163 psi | 72% | 2526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 46,021 psi | 76% | 2638 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 96% | 42,482 psi | 71% | 2572 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 88% | 45,252 psi | 75% | 2635 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,595 psi | 66% | 2280 fps | 100% |
| SNPE Vectan SP 10 | 38.7 gr | 88% | 42,076 psi | 70% | 2589 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 34,983 psi | 58% | 2421 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 42,250 psi | 70% | 2510 fps | 95.6% |
| Somchem S321 | <<locked>> | 98% | 49,501 psi | 82% | 2717 fps | 95% |
| Somchem S335 | <<locked>> | 94% | 38,218 psi | 63% | 2457 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 49,937 psi | 83% | 2493 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,419 psi | 61% | 2405 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,196 psi | 49% | 2244 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 88% | 32,474 psi | 54% | 2333 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 94% | 31,966 psi | 53% | 2402 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 98% | 38,986 psi | 65% | 2510 fps | 95.1% |
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 70 powders for .307 Win. loaded with the .308 | 135gr | Atomic 29 FNHP. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,825 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,825 fps. Accurate 2015 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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 2219, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for .307 Win. with the .308 | 135gr | Atomic 29 FNHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, Accurate 4064 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.