Load Specifications
Load data in caliber .307 Win. with .308 | 139gr | Prvi Partizan FMJ bullet and 44 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% | 53,853 psi | 89% | 2608 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 49,777 psi | 83% | 2631 fps | 99.5% |
| Accurate 2460 | <<locked>> | 98% | 52,112 psi | 87% | 2684 fps | 97.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,942 psi | 63% | 2500 fps | 97.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 48,573 psi | 81% | 2667 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 94% | 54,375 psi | 90% | 2615 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 92% | 51,590 psi | 86% | 2575 fps | 97.2% |
| ADI AR 2207 | <<locked>> | 92% | 53,272 psi | 89% | 2654 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 52,025 psi | 86% | 2707 fps | 98.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,963 psi | 76% | 2657 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 53,693 psi | 89% | 2703 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 52,344 psi | 87% | 2625 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 52,489 psi | 87% | 2605 fps | 99.1% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 52,692 psi | 88% | 2644 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 98% | 53,287 psi | 89% | 2726 fps | 98.9% |
| Hodgdon H335 | <<locked>> | 96% | 50,879 psi | 85% | 2690 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 90% | 52,968 psi | 88% | 2612 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,894 psi | 53% | 1594 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,743 psi | 73% | 2631 fps | 98.1% |
| IMR 4198 | <<locked>> | 96% | 52,373 psi | 87% | 2641 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,982 psi | 88% | 2582 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 53,432 psi | 89% | 2707 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 98% | 52,417 psi | 87% | 2684 fps | 96.4% |
| Lovex S053 | <<locked>> | 86% | 51,648 psi | 86% | 2536 fps | 100% |
| Norma 200 | <<locked>> | 94% | 54,085 psi | 90% | 2690 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 44,599 psi | 74% | 2585 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,894 psi | 53% | 1634 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,881 psi | 88% | 2618 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,953 psi | 88% | 2697 fps | 97.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,762 psi | 81% | 2621 fps | 97.1% |
| Shooters World AR Plus | <<locked>> | 92% | 53,432 psi | 89% | 2707 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 52,489 psi | 87% | 2402 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 52,301 psi | 87% | 2707 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,996 psi | 86% | 2674 fps | 99.3% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,704 psi | 81% | 2562 fps | 97.2% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,972 psi | 65% | 2408 fps | 95.9% |
| Somchem S321ᴾ | <<locked>> | 100% | 54,027 psi | 90% | 2730 fps | 96% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,804 psi | 78% | 2556 fps | 97.7% |
| Vihtavuori N110 | <<locked>> | 82% | 53,969 psi | 90% | 2487 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 53,359 psi | 89% | 2612 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 51,416 psi | 85% | 2612 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,688 psi | 79% | 2566 fps | 99.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,595 psi | 66% | 2513 fps | 98.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,293 psi | 70% | 2520 fps | 96.2% |
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% | 41,263 psi | 69% | 2411 fps | 99% |
| Accurate 2015 | <<locked>> | 86% | 32,314 psi | 54% | 2306 fps | 95.8% |
| Accurate 2460 | <<locked>> | 92% | 42,554 psi | 71% | 2530 fps | 95.6% |
| Accurate 2495 | <<locked>> | 94% | 30,864 psi | 51% | 2346 fps | 95.7% |
| Accurate 2520 | <<locked>> | 98% | 45,092 psi | 75% | 2608 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 35,549 psi | 59% | 2290 fps | 95.2% |
| Accurate LT-32 | <<locked>> | 86% | 43,062 psi | 72% | 2434 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 37,101 psi | 62% | 2395 fps | 100% |
| ADI AR 2219 | 34.5 gr | 84% | 37,057 psi | 62% | 2438 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 82% | 26,223 psi | 44% | 2211 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,038 psi | 52% | 2287 fps | 96.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,377 psi | 64% | 2392 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 35,636 psi | 59% | 2316 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 98% | 49,559 psi | 82% | 2595 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 86% | 36,201 psi | 60% | 2418 fps | 95% |
| Hodgdon H335 | 38.3 gr | 90% | 41,814 psi | 69% | 2533 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 39,175 psi | 65% | 2375 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,438 psi | 39% | 1421 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 34,069 psi | 57% | 2425 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 33,083 psi | 55% | 2293 fps | 98.1% |
| IMR 4227 | <<locked>> | 80% | 44,570 psi | 74% | 2457 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 46,398 psi | 77% | 2595 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 96% | 48,689 psi | 81% | 2628 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 43,656 psi | 73% | 2418 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,099 psi | 58% | 2365 fps | 98.5% |
| Norma 202 | <<locked>> | 98% | 41,814 psi | 69% | 2536 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,293 psi | 39% | 1453 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,005 psi | 73% | 2484 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 43,845 psi | 73% | 2546 fps | 95% |
| Rottweil R 901 | <<locked>> | 94% | 41,089 psi | 68% | 2487 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 88% | 46,398 psi | 77% | 2595 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,292 psi | 67% | 2234 fps | 100% |
| SNPE Vectan SP 10 | 36.6 gr | 86% | 40,089 psi | 67% | 2493 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 33,649 psi | 56% | 2336 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 40,393 psi | 67% | 2418 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 36,506 psi | 61% | 2359 fps | 95.1% |
| Somchem S321 | <<locked>> | 98% | 50,256 psi | 83% | 2674 fps | 95.2% |
| Somchem S335 | <<locked>> | 92% | 36,550 psi | 61% | 2369 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 50,865 psi | 85% | 2448 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 37,246 psi | 62% | 2362 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,849 psi | 50% | 2208 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 86% | 31,198 psi | 52% | 2251 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 92% | 30,777 psi | 51% | 2320 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 98% | 39,697 psi | 66% | 2470 fps | 95.4% |
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 44 powders for .307 Win. loaded with the .308 | 139gr | Prvi Partizan FMJ. Somchem S321 delivers the highest muzzle velocity at 2,730 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,730 fps. Accurate 2015 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.308" calls for a 1:14.5 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 | 139gr | Prvi Partizan FMJ 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.