Load Specifications
Load data in caliber .307 Win. with .308 | 150gr | Speer Soft Point bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H335, Somchem S321 and Hodgdon H322.
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% | 53,983 psi | 90% | 2526 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 51,459 psi | 85% | 2569 fps | 99.9% |
| Accurate 2460 | <<locked>> | 96% | 53,838 psi | 89% | 2625 fps | 98.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,496 psi | 71% | 2497 fps | 99.4% |
| Accurate 2520ᴾ | <<locked>> | 100% | 53,867 psi | 89% | 2664 fps | 98.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,508 psi | 66% | 2461 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 90% | 51,648 psi | 86% | 2497 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 90% | 52,069 psi | 87% | 2507 fps | 98.2% |
| ADI AR 2207 | <<locked>> | 88% | 51,517 psi | 86% | 2536 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 53,084 psi | 88% | 2638 fps | 99.5% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 53,650 psi | 89% | 2625 fps | 96.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 50,807 psi | 84% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 54,346 psi | 90% | 2720 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 94% | 51,924 psi | 86% | 2589 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 53,243 psi | 88% | 2549 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 53,156 psi | 88% | 2536 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 98% | 53,722 psi | 89% | 2582 fps | 97.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 51,227 psi | 85% | 2644 fps | 97% |
| Hodgdon H322 | <<locked>> | 94% | 51,024 psi | 85% | 2608 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 94% | 52,417 psi | 87% | 2631 fps | 98.8% |
| Hodgdon H4198 | <<locked>> | 88% | 53,548 psi | 89% | 2543 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,532 psi | 54% | 1549 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 48,370 psi | 80% | 2625 fps | 99.5% |
| IMR 4198 | <<locked>> | 94% | 53,330 psi | 89% | 2566 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 53,635 psi | 89% | 2503 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 53,650 psi | 89% | 2625 fps | 96.8% |
| Lovex D073.4 | <<locked>> | 88% | 50,821 psi | 84% | 2589 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 96% | 53,606 psi | 89% | 2621 fps | 97.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 47,747 psi | 79% | 2585 fps | 97.5% |
| Lovex S053 | <<locked>> | 84% | 52,446 psi | 87% | 2454 fps | 100% |
| Norma 200 | <<locked>> | 90% | 52,446 psi | 87% | 2575 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 49,052 psi | 81% | 2556 fps | 96% |
| Norma 202ᴾ | <<locked>> | 100% | 49,182 psi | 82% | 2582 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,576 psi | 54% | 1588 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 53,766 psi | 89% | 2539 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 54,302 psi | 90% | 2635 fps | 98.3% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 53,447 psi | 89% | 2612 fps | 98.8% |
| Shooters World AR Plus | <<locked>> | 88% | 50,821 psi | 84% | 2589 fps | 97.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 47,747 psi | 79% | 2585 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 51,692 psi | 86% | 2552 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,055 psi | 88% | 2320 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 53,374 psi | 89% | 2638 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 53,156 psi | 88% | 2602 fps | 99.8% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 52,765 psi | 88% | 2543 fps | 98.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,221 psi | 70% | 2398 fps | 97.9% |
| Somchem S321 | <<locked>> | 96% | 51,692 psi | 86% | 2618 fps | 96.8% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,821 psi | 84% | 2539 fps | 99.1% |
| Vihtavuori N120 | <<locked>> | 88% | 51,576 psi | 86% | 2493 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 52,750 psi | 88% | 2546 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 51,866 psi | 86% | 2546 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,758 psi | 73% | 2507 fps | 99.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 46,441 psi | 77% | 2516 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 98% | 50,981 psi | 85% | 2575 fps | 96.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 44,773 psi | 74% | 2503 fps | 97.3% |
| Winchester 748ᴾ | <<locked>> | 100% | 52,170 psi | 87% | 2661 fps | 97.5% |
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% | 44,585 psi | 74% | 2392 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 29,457 psi | 49% | 2162 fps | 95.9% |
| Accurate 2460 | <<locked>> | 86% | 38,348 psi | 64% | 2372 fps | 95.6% |
| Accurate 2495 | <<locked>> | 86% | 26,832 psi | 45% | 2165 fps | 95.2% |
| Accurate 2520 | <<locked>> | 90% | 37,985 psi | 63% | 2402 fps | 95% |
| Accurate 4064 | <<locked>> | 96% | 34,722 psi | 58% | 2362 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 38,247 psi | 64% | 2274 fps | 97.2% |
| Accurate LT-32 | <<locked>> | 80% | 38,595 psi | 64% | 2277 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 40,509 psi | 67% | 2369 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,389 psi | 59% | 2326 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 96% | 47,500 psi | 79% | 2530 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 26,905 psi | 45% | 2165 fps | 97.4% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 47,790 psi | 79% | 2615 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,794 psi | 56% | 2274 fps | 98.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,553 psi | 69% | 2369 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,419 psi | 61% | 2260 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 92% | 44,976 psi | 75% | 2444 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 96% | 44,440 psi | 74% | 2536 fps | 95.5% |
| Hodgdon H322 | 33.4 gr | 82% | 34,853 psi | 58% | 2313 fps | 95.9% |
| Hodgdon H335 | 36.6 gr | 84% | 37,594 psi | 62% | 2375 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 42,119 psi | 70% | 2359 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,120 psi | 40% | 1385 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 30,951 psi | 51% | 2277 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 35,563 psi | 59% | 2270 fps | 99.4% |
| IMR 4227 | <<locked>> | 80% | 47,558 psi | 79% | 2418 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 47,500 psi | 79% | 2530 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 82% | 41,234 psi | 69% | 2428 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 90% | 43,613 psi | 72% | 2467 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 94% | 38,682 psi | 64% | 2428 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 46,644 psi | 77% | 2375 fps | 100% |
| Norma 200 | <<locked>> | 80% | 38,392 psi | 64% | 2352 fps | 99.6% |
| Norma 201 | <<locked>> | 98% | 46,108 psi | 77% | 2507 fps | 95.3% |
| Norma 202 | <<locked>> | 90% | 35,969 psi | 60% | 2346 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,018 psi | 40% | 1417 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,456 psi | 79% | 2451 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 41,800 psi | 69% | 2431 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 88% | 37,420 psi | 62% | 2336 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 82% | 41,234 psi | 69% | 2428 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 94% | 38,682 psi | 64% | 2428 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 48,182 psi | 80% | 2500 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,946 psi | 71% | 2188 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 38,493 psi | 64% | 2385 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,374 psi | 57% | 2277 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 36,564 psi | 61% | 2274 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 33,141 psi | 55% | 2221 fps | 95.3% |
| Somchem S321 | 40.3 gr | 92% | 45,005 psi | 75% | 2510 fps | 95.2% |
| Somchem S335 | <<locked>> | 86% | 33,518 psi | 56% | 2231 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 40,582 psi | 67% | 2333 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,532 psi | 54% | 2198 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,297 psi | 47% | 2106 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 86% | 28,239 psi | 47% | 2182 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 92% | 36,230 psi | 60% | 2329 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 96% | 47,805 psi | 79% | 2526 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 94% | 36,927 psi | 61% | 2356 fps | 95.2% |
| Winchester 748 | <<locked>> | 94% | 43,047 psi | 72% | 2507 fps | 95.3% |
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 55 powders for .307 Win. loaded with the .308 | 150gr | Speer Soft Point. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,720 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,720 fps. Accurate 2495 gives the best case fill at 100 %, and 55 of the 55 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 150.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 2520, Accurate 4064 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. Hodgdon H335, Somchem S321, Hodgdon H322 rank at the top here: for .307 Win. with the .308 | 150gr | Speer Soft Point 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.