Load Specifications
Load data in caliber .307 Win. with .308 | 150gr | RWS TMR 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% | 51,735 psi | 86% | 2507 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 52,837 psi | 88% | 2598 fps | 100% |
| Accurate 2460 | <<locked>> | 94% | 51,329 psi | 85% | 2602 fps | 98.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 44,164 psi | 73% | 2530 fps | 99.7% |
| Accurate 2520 | <<locked>> | 98% | 51,996 psi | 86% | 2648 fps | 98.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 41,017 psi | 68% | 2497 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 90% | 52,547 psi | 87% | 2520 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 90% | 52,953 psi | 88% | 2533 fps | 98.5% |
| ADI AR 2207 | <<locked>> | 88% | 52,750 psi | 88% | 2559 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 54,433 psi | 90% | 2664 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 98% | 51,605 psi | 86% | 2605 fps | 96.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 52,127 psi | 87% | 2664 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 52,315 psi | 87% | 2700 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 94% | 53,490 psi | 89% | 2618 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 88% | 54,317 psi | 90% | 2572 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 51,184 psi | 85% | 2520 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 96% | 51,779 psi | 86% | 2566 fps | 97.3% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 52,707 psi | 88% | 2674 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 94% | 52,373 psi | 87% | 2638 fps | 99.5% |
| Hodgdon H335 | <<locked>> | 94% | 53,954 psi | 90% | 2664 fps | 99.1% |
| Hodgdon H4198 | <<locked>> | 86% | 51,401 psi | 85% | 2523 fps | 99.2% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 52,170 psi | 87% | 2648 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,619 psi | 54% | 1558 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 49,661 psi | 83% | 2654 fps | 99.7% |
| IMR 4198 | <<locked>> | 92% | 51,605 psi | 86% | 2552 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 51,619 psi | 86% | 2484 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 51,605 psi | 86% | 2605 fps | 96.6% |
| Lovex D073.4 | <<locked>> | 88% | 52,199 psi | 87% | 2618 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 94% | 51,459 psi | 85% | 2602 fps | 97.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 48,979 psi | 81% | 2612 fps | 97.9% |
| Lovex S053 | <<locked>> | 84% | 53,330 psi | 89% | 2474 fps | 100% |
| Norma 200 | <<locked>> | 90% | 53,563 psi | 89% | 2598 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 50,604 psi | 84% | 2592 fps | 96.5% |
| Norma 202ᴾ | <<locked>> | 100% | 50,386 psi | 84% | 2612 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,692 psi | 54% | 1598 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 51,271 psi | 85% | 2513 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 51,866 psi | 86% | 2612 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 98% | 51,634 psi | 86% | 2595 fps | 98.7% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 47,645 psi | 79% | 2536 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 88% | 52,199 psi | 87% | 2618 fps | 98.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 48,979 psi | 81% | 2612 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 52,750 psi | 88% | 2579 fps | 96.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,969 psi | 90% | 2339 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 51,459 psi | 85% | 2621 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 54,259 psi | 90% | 2628 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 53,969 psi | 90% | 2572 fps | 99% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,308 psi | 72% | 2425 fps | 98.3% |
| Somchem S321 | <<locked>> | 96% | 52,721 psi | 88% | 2644 fps | 97.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 52,330 psi | 87% | 2569 fps | 99.4% |
| Vihtavuori N120 | <<locked>> | 88% | 52,794 psi | 88% | 2516 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 53,722 psi | 89% | 2569 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 53,026 psi | 88% | 2572 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 45,063 psi | 75% | 2533 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 47,558 psi | 79% | 2543 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 98% | 52,504 psi | 87% | 2612 fps | 96.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 46,122 psi | 77% | 2533 fps | 97.8% |
| Winchester 748ᴾ | <<locked>> | 100% | 53,606 psi | 89% | 2694 fps | 97.9% |
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 45,542 psi | 76% | 2415 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 30,124 psi | 50% | 2185 fps | 96.3% |
| Accurate 2460 | <<locked>> | 84% | 36,898 psi | 61% | 2352 fps | 95.4% |
| Accurate 2495 | <<locked>> | 86% | 27,731 psi | 46% | 2195 fps | 95.7% |
| Accurate 2520 | <<locked>> | 90% | 39,117 psi | 65% | 2431 fps | 95.6% |
| Accurate 4064 | <<locked>> | 94% | 33,707 psi | 56% | 2346 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 38,841 psi | 65% | 2297 fps | 97.6% |
| Accurate LT-32 | <<locked>> | 80% | 39,233 psi | 65% | 2300 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 41,379 psi | 69% | 2392 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,274 psi | 60% | 2356 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 94% | 45,803 psi | 76% | 2510 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 27,456 psi | 46% | 2192 fps | 97.8% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 48,791 psi | 81% | 2641 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,824 psi | 58% | 2303 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,337 psi | 70% | 2392 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,130 psi | 62% | 2283 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 90% | 43,178 psi | 72% | 2421 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 94% | 42,743 psi | 71% | 2513 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 33,330 psi | 55% | 2290 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 82% | 35,839 psi | 60% | 2349 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 42,844 psi | 71% | 2382 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 98% | 48,718 psi | 81% | 2592 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,076 psi | 40% | 1391 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 31,763 psi | 53% | 2306 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 36,332 psi | 60% | 2297 fps | 99.6% |
| IMR 4227 | <<locked>> | 80% | 48,457 psi | 81% | 2441 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 45,803 psi | 76% | 2510 fps | 95.3% |
| Lovex D073.4 | <<locked>> | 80% | 39,320 psi | 65% | 2402 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 88% | 41,756 psi | 69% | 2444 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 94% | 40,103 psi | 67% | 2464 fps | 95.8% |
| Lovex S053 | <<locked>> | 80% | 47,543 psi | 79% | 2398 fps | 100% |
| Norma 200 | <<locked>> | 80% | 39,189 psi | 65% | 2375 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 44,498 psi | 74% | 2490 fps | 95% |
| Norma 202 | <<locked>> | 90% | 36,767 psi | 61% | 2369 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,989 psi | 40% | 1424 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 48,283 psi | 80% | 2470 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 40,147 psi | 67% | 2411 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 86% | 36,158 psi | 60% | 2320 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 98% | 44,802 psi | 74% | 2487 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 39,320 psi | 65% | 2402 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 94% | 40,103 psi | 67% | 2464 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 49,284 psi | 82% | 2526 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,947 psi | 73% | 2211 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,767 psi | 61% | 2359 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,128 psi | 58% | 2303 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 37,449 psi | 62% | 2300 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 32,053 psi | 53% | 2205 fps | 95% |
| Somchem S321 | <<locked>> | 90% | 43,366 psi | 72% | 2490 fps | 95% |
| Somchem S335 | <<locked>> | 86% | 34,272 psi | 57% | 2257 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 41,510 psi | 69% | 2356 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,199 psi | 55% | 2221 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 80% | 28,877 psi | 48% | 2129 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 84% | 27,296 psi | 45% | 2165 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 90% | 34,809 psi | 58% | 2310 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 94% | 45,977 psi | 76% | 2510 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 94% | 37,884 psi | 63% | 2385 fps | 95.7% |
| Winchester 748 | <<locked>> | 92% | 41,147 psi | 68% | 2484 fps | 95% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 88 powders for .307 Win. loaded with the .308 | 150gr | RWS TMR. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,700 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,700 fps. Accurate 2495 gives the best case fill at 100 %, and 88 of the 88 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 1:6.0 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.