Load Specifications
Load data in caliber .307 Win. with .308 | 145gr | CutEdge ESP Raptor bullet and 44 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>> | 88% | 53,055 psi | 88% | 2543 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,907 psi | 81% | 2562 fps | 99.6% |
| Accurate 2460 | <<locked>> | 98% | 51,416 psi | 85% | 2618 fps | 97.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,709 psi | 61% | 2428 fps | 98% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,630 psi | 79% | 2598 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 94% | 53,592 psi | 89% | 2546 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 94% | 54,099 psi | 90% | 2556 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 92% | 53,026 psi | 88% | 2592 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,416 psi | 85% | 2641 fps | 98.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,585 psi | 76% | 2592 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 53,156 psi | 88% | 2638 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,605 psi | 86% | 2556 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 52,098 psi | 87% | 2543 fps | 99.2% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 52,083 psi | 87% | 2579 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 98% | 52,750 psi | 88% | 2657 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 98% | 54,360 psi | 90% | 2684 fps | 98.5% |
| Hodgdon H4198 | <<locked>> | 90% | 52,475 psi | 87% | 2549 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,647 psi | 53% | 1549 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,004 psi | 71% | 2562 fps | 98.3% |
| IMR 4198 | <<locked>> | 96% | 51,895 psi | 86% | 2575 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,649 psi | 87% | 2520 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,620 psi | 87% | 2641 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 98% | 51,372 psi | 85% | 2615 fps | 96.6% |
| Lovex S053 | <<locked>> | 88% | 54,070 psi | 90% | 2510 fps | 100% |
| Norma 200 | <<locked>> | 94% | 53,243 psi | 88% | 2621 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 43,961 psi | 73% | 2523 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,575 psi | 52% | 1588 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,591 psi | 87% | 2552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,460 psi | 87% | 2631 fps | 97.3% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 47,950 psi | 80% | 2559 fps | 97.3% |
| Shooters World AR Plus | <<locked>> | 92% | 52,620 psi | 87% | 2641 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 51,866 psi | 86% | 2339 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,808 psi | 86% | 2641 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,140 psi | 85% | 2602 fps | 99.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,935 psi | 80% | 2497 fps | 97.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,174 psi | 63% | 2346 fps | 96.1% |
| Somchem S321ᴾ | <<locked>> | 100% | 53,272 psi | 89% | 2661 fps | 96.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,093 psi | 77% | 2493 fps | 97.9% |
| Vihtavuori N110 | <<locked>> | 82% | 53,084 psi | 88% | 2418 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 53,127 psi | 88% | 2546 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 54,012 psi | 90% | 2592 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,949 psi | 78% | 2500 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,754 psi | 64% | 2448 fps | 98.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,655 psi | 69% | 2457 fps | 96.4% |
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 40,799 psi | 68% | 2352 fps | 99.1% |
| Accurate 2015 | <<locked>> | 84% | 29,457 psi | 49% | 2195 fps | 95.1% |
| Accurate 2460 | <<locked>> | 92% | 41,582 psi | 69% | 2461 fps | 95.7% |
| Accurate 2495 | <<locked>> | 94% | 29,733 psi | 49% | 2277 fps | 95.7% |
| Accurate 2520 | <<locked>> | 96% | 41,394 psi | 69% | 2493 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 34,998 psi | 58% | 2231 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 86% | 42,438 psi | 71% | 2372 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 36,332 psi | 60% | 2329 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 36,724 psi | 61% | 2382 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 82% | 25,556 psi | 42% | 2152 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,226 psi | 50% | 2221 fps | 96.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,637 psi | 63% | 2329 fps | 99.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 32,967 psi | 55% | 2211 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 96% | 46,224 psi | 77% | 2487 fps | 95% |
| Hodgdon H322 | <<locked>> | 86% | 35,491 psi | 59% | 2356 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 88% | 38,464 psi | 64% | 2418 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 38,682 psi | 64% | 2316 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,250 psi | 39% | 1385 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 33,402 psi | 55% | 2362 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 32,416 psi | 54% | 2231 fps | 98.3% |
| IMR 4227 | <<locked>> | 80% | 43,976 psi | 73% | 2392 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 42,366 psi | 70% | 2477 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 94% | 44,788 psi | 74% | 2513 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 42,873 psi | 71% | 2352 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,084 psi | 57% | 2300 fps | 98.6% |
| Norma 202 | <<locked>> | 96% | 38,725 psi | 64% | 2428 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,032 psi | 38% | 1414 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,482 psi | 72% | 2421 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 43,004 psi | 71% | 2480 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 94% | 40,016 psi | 66% | 2421 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 86% | 42,366 psi | 70% | 2477 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,045 psi | 67% | 2178 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 39,581 psi | 66% | 2434 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 33,040 psi | 55% | 2274 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 39,697 psi | 66% | 2356 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 35,998 psi | 60% | 2300 fps | 95.3% |
| Somchem S321 | <<locked>> | 98% | 49,385 psi | 82% | 2605 fps | 95.4% |
| Somchem S335 | <<locked>> | 92% | 35,810 psi | 59% | 2306 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 50,328 psi | 84% | 2382 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 36,535 psi | 61% | 2300 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,095 psi | 48% | 2146 fps | 96% |
| Vihtavuori N133 | <<locked>> | 86% | 30,647 psi | 51% | 2192 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 92% | 30,197 psi | 50% | 2260 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 98% | 38,972 psi | 65% | 2408 fps | 95.6% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 72 powders for .307 Win. loaded with the .308 | 145gr | CutEdge ESP Raptor. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,707 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,707 fps. Accurate 2015 gives the best case fill at 100 %, and 72 of the 72 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 145.0 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. As outliers, Accurate 2200, Accurate 2230, Accurate 4064 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.