Load Specifications
Load data in caliber .307 Win. with .308 | 150gr | Barnes X FN bullet and 57 powders. The key underlying parameters are shown in the table above.
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>> | 84% | 53,040 psi | 88% | 2493 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 51,488 psi | 86% | 2543 fps | 99.9% |
| Accurate 2460 | <<locked>> | 94% | 53,737 psi | 89% | 2595 fps | 98.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2539 fps | 99.8% |
| Accurate 2520 | <<locked>> | 98% | 53,417 psi | 89% | 2631 fps | 98.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,714 psi | 73% | 2503 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 90% | 53,577 psi | 89% | 2503 fps | 99.5% |
| Accurate LT-32 | <<locked>> | 90% | 53,998 psi | 90% | 2513 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 88% | 54,418 psi | 90% | 2549 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 52,272 psi | 87% | 2602 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 98% | 53,055 psi | 88% | 2592 fps | 96.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 53,592 psi | 89% | 2654 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 53,679 psi | 89% | 2684 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 92% | 51,996 psi | 86% | 2566 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 52,692 psi | 88% | 2516 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 51,967 psi | 86% | 2497 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 96% | 53,113 psi | 88% | 2549 fps | 97.2% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 53,911 psi | 90% | 2661 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 94% | 53,882 psi | 90% | 2628 fps | 99.5% |
| Hodgdon H335 | <<locked>> | 92% | 51,561 psi | 86% | 2595 fps | 98.6% |
| Hodgdon H4198 | <<locked>> | 86% | 52,649 psi | 87% | 2507 fps | 99.2% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 53,505 psi | 89% | 2631 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,301 psi | 55% | 1545 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 51,155 psi | 85% | 2644 fps | 99.7% |
| IMR 4198 | <<locked>> | 92% | 52,707 psi | 88% | 2536 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 52,779 psi | 88% | 2467 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 53,055 psi | 88% | 2592 fps | 96.6% |
| Lovex D073.4 | <<locked>> | 88% | 54,027 psi | 90% | 2608 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 94% | 53,476 psi | 89% | 2595 fps | 97.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 50,749 psi | 84% | 2605 fps | 97.9% |
| Lovex S053 | <<locked>> | 82% | 52,054 psi | 86% | 2425 fps | 100% |
| Norma 200 | <<locked>> | 88% | 52,852 psi | 88% | 2552 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 52,431 psi | 87% | 2582 fps | 96.5% |
| Norma 202ᴾ | <<locked>> | 100% | 52,069 psi | 87% | 2602 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,533 psi | 56% | 1585 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 53,055 psi | 88% | 2507 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 53,272 psi | 89% | 2595 fps | 98% |
| Rottweil R 901 | <<locked>> | 98% | 54,201 psi | 90% | 2592 fps | 98.7% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 49,719 psi | 83% | 2530 fps | 95.9% |
| Shooters World AR Plus | <<locked>> | 88% | 54,027 psi | 90% | 2608 fps | 98.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 50,749 psi | 84% | 2605 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 54,360 psi | 90% | 2566 fps | 96.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 52,721 psi | 88% | 2293 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 52,997 psi | 88% | 2608 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 52,562 psi | 87% | 2572 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 52,547 psi | 87% | 2516 fps | 98.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 44,788 psi | 74% | 2418 fps | 98.3% |
| Somchem S321 | <<locked>> | 96% | 54,302 psi | 90% | 2631 fps | 97.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 53,751 psi | 89% | 2556 fps | 99.3% |
| Vihtavuori N120 | <<locked>> | 88% | 54,331 psi | 90% | 2503 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 52,127 psi | 87% | 2513 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 54,273 psi | 90% | 2556 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 46,717 psi | 78% | 2526 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 49,211 psi | 82% | 2533 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 98% | 53,679 psi | 89% | 2592 fps | 96.7% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 47,616 psi | 79% | 2526 fps | 97.8% |
| Winchester 748 | <<locked>> | 98% | 51,401 psi | 85% | 2628 fps | 97.2% |
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 47,137 psi | 78% | 2405 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 32,663 psi | 54% | 2205 fps | 96.9% |
| Accurate 2460 | <<locked>> | 84% | 39,378 psi | 65% | 2359 fps | 95.7% |
| Accurate 2495 | <<locked>> | 82% | 27,659 psi | 46% | 2146 fps | 95.4% |
| Accurate 2520 | <<locked>> | 88% | 38,870 psi | 65% | 2388 fps | 95.1% |
| Accurate 4064 | <<locked>> | 92% | 34,708 psi | 58% | 2326 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 40,437 psi | 67% | 2290 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 80% | 40,756 psi | 68% | 2293 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 43,236 psi | 72% | 2388 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 38,043 psi | 63% | 2356 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 94% | 47,224 psi | 78% | 2500 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 29,617 psi | 49% | 2208 fps | 98.3% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 50,531 psi | 84% | 2635 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,767 psi | 61% | 2303 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 44,498 psi | 74% | 2392 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,566 psi | 64% | 2277 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 44,759 psi | 74% | 2415 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 44,730 psi | 74% | 2513 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 35,070 psi | 58% | 2290 fps | 95.8% |
| Hodgdon H335 | <<locked>> | 82% | 37,565 psi | 62% | 2349 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 44,324 psi | 74% | 2372 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 98% | 50,473 psi | 84% | 2585 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,845 psi | 41% | 1378 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 31,850 psi | 53% | 2270 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 37,724 psi | 63% | 2287 fps | 99.6% |
| IMR 4227 | <<locked>> | 80% | 49,647 psi | 82% | 2425 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 47,224 psi | 78% | 2500 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 41,742 psi | 69% | 2408 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 88% | 44,411 psi | 74% | 2451 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 92% | 39,465 psi | 66% | 2415 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 49,037 psi | 81% | 2385 fps | 100% |
| Norma 200 | <<locked>> | 80% | 42,061 psi | 70% | 2382 fps | 99.9% |
| Norma 201 | <<locked>> | 96% | 46,920 psi | 78% | 2493 fps | 95.3% |
| Norma 202 | <<locked>> | 88% | 36,448 psi | 61% | 2326 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,903 psi | 41% | 1411 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 49,908 psi | 83% | 2461 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 42,119 psi | 70% | 2411 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 84% | 37,144 psi | 62% | 2293 fps | 95% |
| Rottweil R 902 | <<locked>> | 98% | 46,905 psi | 78% | 2487 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 41,742 psi | 69% | 2408 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 39,465 psi | 66% | 2415 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 50,778 psi | 84% | 2516 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,295 psi | 75% | 2198 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,711 psi | 64% | 2362 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,854 psi | 61% | 2300 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 37,101 psi | 62% | 2254 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 33,736 psi | 56% | 2205 fps | 95.3% |
| Somchem S321 | <<locked>> | 90% | 44,904 psi | 75% | 2484 fps | 95% |
| Somchem S335 | <<locked>> | 84% | 34,345 psi | 57% | 2218 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 43,265 psi | 72% | 2349 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,230 psi | 59% | 2224 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 30,821 psi | 51% | 2139 fps | 96.1% |
| Vihtavuori N135 | <<locked>> | 82% | 27,963 psi | 46% | 2139 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 90% | 36,622 psi | 61% | 2310 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 94% | 47,500 psi | 79% | 2500 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 92% | 37,536 psi | 62% | 2343 fps | 95.2% |
| Winchester 748 | <<locked>> | 92% | 42,815 psi | 71% | 2477 fps | 95% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 89 powders for .307 Win. loaded with the .308 | 150gr | Barnes X FN. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,684 fps. Accurate 2495 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. As outliers, Accurate 2200, Accurate 2230, ADI AR 2208 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.