Load Specifications
Load data in caliber .307 Win. with .308 | 139gr | IBEX TRD bullet and 43 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World AR Plus, ADI AR 2219 and SNPE Vectan SP 10.
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>> | 86% | 52,446 psi | 87% | 2562 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 52,562 psi | 87% | 2641 fps | 99.6% |
| Accurate 2460 | <<locked>> | 96% | 51,561 psi | 86% | 2644 fps | 97.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,872 psi | 70% | 2536 fps | 98.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 48,849 psi | 81% | 2654 fps | 96.4% |
| Accurate 2520ᴾ | <<locked>> | 100% | 48,849 psi | 81% | 2654 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 92% | 52,968 psi | 88% | 2569 fps | 98.8% |
| Accurate LT-32 | <<locked>> | 92% | 53,519 psi | 89% | 2575 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 90% | 52,678 psi | 88% | 2618 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 54,085 psi | 90% | 2710 fps | 98.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 48,254 psi | 80% | 2664 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 96% | 53,040 psi | 88% | 2667 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 51,663 psi | 86% | 2585 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 54,433 psi | 90% | 2608 fps | 99.2% |
| Hodgdon Benchmark | <<locked>> | 98% | 51,692 psi | 86% | 2598 fps | 95.6% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 54,085 psi | 90% | 2710 fps | 98.9% |
| Hodgdon H335 | <<locked>> | 94% | 53,243 psi | 88% | 2697 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 92% | 54,404 psi | 90% | 2605 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,692 psi | 54% | 1585 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,018 psi | 70% | 2566 fps | 97.5% |
| IMR 4198 | <<locked>> | 96% | 54,259 psi | 90% | 2644 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 52,040 psi | 86% | 2543 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 51,343 psi | 85% | 2625 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 96% | 51,837 psi | 86% | 2644 fps | 96% |
| Lovex S053 | <<locked>> | 86% | 53,925 psi | 90% | 2539 fps | 100% |
| Norma 200 | <<locked>> | 92% | 54,259 psi | 90% | 2661 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 47,079 psi | 78% | 2602 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,866 psi | 55% | 1627 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 52,040 psi | 86% | 2579 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 51,982 psi | 86% | 2651 fps | 96.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 52,591 psi | 87% | 2648 fps | 97.6% |
| Shooters World AR Plus | <<locked>> | 90% | 52,359 psi | 87% | 2661 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 54,462 psi | 90% | 2402 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 51,039 psi | 85% | 2657 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 53,795 psi | 89% | 2671 fps | 99.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 50,981 psi | 85% | 2566 fps | 97.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,046 psi | 68% | 2418 fps | 96.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,458 psi | 82% | 2569 fps | 98% |
| Vihtavuori N120 | <<locked>> | 90% | 52,678 psi | 88% | 2575 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 53,577 psi | 89% | 2615 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 49,676 psi | 83% | 2569 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,076 psi | 70% | 2530 fps | 98.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 44,599 psi | 74% | 2533 fps | 96.5% |
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% | 43,700 psi | 73% | 2425 fps | 99.2% |
| Accurate 2015 | <<locked>> | 82% | 31,357 psi | 52% | 2244 fps | 95.1% |
| Accurate 2460 | <<locked>> | 90% | 42,888 psi | 71% | 2500 fps | 95.4% |
| Accurate 2495 | <<locked>> | 90% | 30,763 psi | 51% | 2303 fps | 95.4% |
| Accurate 2520 | <<locked>> | 98% | 45,788 psi | 76% | 2605 fps | 95.6% |
| Accurate 2520 | <<locked>> | 98% | 45,788 psi | 76% | 2605 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 37,362 psi | 62% | 2297 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 86% | 44,947 psi | 75% | 2438 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 39,639 psi | 66% | 2411 fps | 100% |
| ADI AR 2219 | 33 gr | 82% | 37,014 psi | 61% | 2405 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 27,137 psi | 45% | 2201 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,605 psi | 56% | 2310 fps | 97.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,162 psi | 68% | 2411 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,650 psi | 59% | 2287 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 96% | 49,052 psi | 81% | 2556 fps | 95% |
| Hodgdon H322 | <<locked>> | 88% | 37,898 psi | 63% | 2425 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 86% | 41,176 psi | 68% | 2493 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 38,754 psi | 64% | 2336 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,439 psi | 41% | 1417 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 35,505 psi | 59% | 2428 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 35,070 psi | 58% | 2306 fps | 98.5% |
| IMR 4227 | <<locked>> | 80% | 46,456 psi | 77% | 2461 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 48,196 psi | 80% | 2575 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 94% | 48,385 psi | 80% | 2592 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 45,847 psi | 76% | 2425 fps | 100% |
| Norma 200 | <<locked>> | 80% | 38,290 psi | 64% | 2392 fps | 99% |
| Norma 202 | <<locked>> | 96% | 41,640 psi | 69% | 2503 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,424 psi | 41% | 1450 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,354 psi | 77% | 2490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 45,963 psi | 76% | 2552 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 92% | 42,148 psi | 70% | 2467 fps | 95.2% |
| Shooters World AR Plus | 35.9 gr | 86% | 45,745 psi | 76% | 2556 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,467 psi | 71% | 2238 fps | 100% |
| SNPE Vectan SP 10 | 35.8 gr | 86% | 42,279 psi | 70% | 2507 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,823 psi | 56% | 2303 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 42,830 psi | 71% | 2434 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 38,638 psi | 64% | 2372 fps | 95.5% |
| Somchem S335 | <<locked>> | 90% | 37,086 psi | 62% | 2346 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 39,726 psi | 66% | 2375 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,416 psi | 54% | 2234 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 31,691 psi | 53% | 2228 fps | 95% |
| Vihtavuori N135 | <<locked>> | 90% | 31,691 psi | 53% | 2306 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 96% | 39,610 psi | 66% | 2441 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 71 powders for .307 Win. loaded with the .308 | 139gr | IBEX TRD. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,726 fps. Accurate 2015 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.308" calls for a 1:13.5 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. Shooters World AR Plus, ADI AR 2219, SNPE Vectan SP 10 rank at the top here: for .307 Win. with the .308 | 139gr | IBEX TRD they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, ADI AR 2206H 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.