Load Specifications
Load data in caliber .307 Win. with .308 | 170gr | Swift A-Frame bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester 748, Alliant Power Pro 1200-R and Hodgdon BL-C2.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 52,185 psi | 87% | 2352 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 54,375 psi | 90% | 2451 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 52,344 psi | 87% | 2470 fps | 95.9% |
| Accurate 2230 | <<locked>> | 86% | 52,779 psi | 88% | 2480 fps | 96.4% |
| Accurate 2460 | <<locked>> | 92% | 52,779 psi | 88% | 2461 fps | 99.5% |
| Accurate 2495ᴾ | <<locked>> | 100% | 49,255 psi | 82% | 2441 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 53,534 psi | 89% | 2507 fps | 99.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 45,687 psi | 76% | 2418 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 88% | 53,301 psi | 89% | 2375 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 53,751 psi | 89% | 2388 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 98% | 53,171 psi | 88% | 2500 fps | 97% |
| ADI AR 2207 | <<locked>> | 86% | 53,853 psi | 89% | 2402 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 52,141 psi | 87% | 2470 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 96% | 53,084 psi | 88% | 2474 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 98% | 54,215 psi | 90% | 2516 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 53,693 psi | 89% | 2556 fps | 97.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 45,556 psi | 76% | 2408 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 90% | 51,285 psi | 85% | 2421 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 50,053 psi | 83% | 2474 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 84% | 51,692 psi | 86% | 2372 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 51,561 psi | 86% | 2369 fps | 100% |
| Bofors RP3ᴾ | <<locked>> | 100% | 45,121 psi | 75% | 2411 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 94% | 52,823 psi | 88% | 2428 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 98% | 54,230 psi | 90% | 2539 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 94% | 52,663 psi | 87% | 2562 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 92% | 53,809 psi | 89% | 2493 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 51,314 psi | 85% | 2464 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 84% | 51,996 psi | 86% | 2372 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 98% | 53,519 psi | 89% | 2513 fps | 97.7% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 51,343 psi | 85% | 2523 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,431 psi | 56% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 52,170 psi | 87% | 2474 fps | 97.3% |
| IMR 3031 | <<locked>> | 98% | 51,227 psi | 85% | 2510 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 50,270 psi | 84% | 2428 fps | 95.8% |
| IMR 4198 | <<locked>> | 90% | 52,504 psi | 87% | 2395 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 51,184 psi | 85% | 2503 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 96% | 53,084 psi | 88% | 2474 fps | 98.2% |
| Lovex D073.4 | <<locked>> | 86% | 53,359 psi | 89% | 2474 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 92% | 52,982 psi | 88% | 2467 fps | 98.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 54,331 psi | 90% | 2526 fps | 99.5% |
| Lovex S053 | <<locked>> | 82% | 53,983 psi | 90% | 2316 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 51,401 psi | 85% | 2402 fps | 96.7% |
| Lovex S062ᴾ | <<locked>> | 100% | 49,110 psi | 82% | 2431 fps | 97.6% |
| Norma 200 | <<locked>> | 86% | 51,488 psi | 86% | 2402 fps | 100% |
| Norma 201 | <<locked>> | 98% | 51,735 psi | 86% | 2454 fps | 98% |
| Norma 202 | <<locked>> | 98% | 51,721 psi | 86% | 2470 fps | 99.6% |
| Norma 203Bᴾ | <<locked>> | 100% | 49,081 psi | 82% | 2464 fps | 96.2% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 49,806 psi | 83% | 2480 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 96% | 52,330 psi | 87% | 2493 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 92% | 51,764 psi | 86% | 2431 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,286 psi | 55% | 1496 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 53,272 psi | 89% | 2474 fps | 99.2% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 52,475 psi | 87% | 2569 fps | 96.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 43,787 psi | 73% | 2441 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 96% | 53,040 psi | 88% | 2457 fps | 99.6% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 51,822 psi | 86% | 2448 fps | 98% |
| Shooters World AR Plus | <<locked>> | 86% | 53,359 psi | 89% | 2474 fps | 99.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 54,331 psi | 90% | 2526 fps | 99.5% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 49,110 psi | 82% | 2431 fps | 97.6% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 53,722 psi | 89% | 2444 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 51,721 psi | 86% | 2152 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 52,576 psi | 87% | 2477 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 52,373 psi | 87% | 2438 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 51,503 psi | 86% | 2470 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 51,706 psi | 86% | 2385 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 47,442 psi | 79% | 2339 fps | 99.6% |
| Somchem S321 | <<locked>> | 94% | 54,230 psi | 90% | 2510 fps | 98.6% |
| Somchem S335 | <<locked>> | 98% | 53,374 psi | 89% | 2428 fps | 99.9% |
| Somchem S341 | <<locked>> | 98% | 53,940 psi | 90% | 2490 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 86% | 53,780 psi | 89% | 2359 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 51,880 psi | 86% | 2382 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 54,375 psi | 90% | 2425 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 49,995 psi | 83% | 2441 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 52,417 psi | 87% | 2454 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 42,032 psi | 70% | 2313 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 96% | 53,650 psi | 89% | 2474 fps | 98.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 50,531 psi | 84% | 2448 fps | 99.4% |
| Winchester 748 | <<locked>> | 96% | 51,561 psi | 86% | 2507 fps | 98.7% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 54,070 psi | 90% | 2526 fps | 97.7% |
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% | 48,689 psi | 81% | 2306 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 33,025 psi | 55% | 2113 fps | 98.5% |
| Accurate 2200 | <<locked>> | 84% | 49,211 psi | 82% | 2421 fps | 95.2% |
| Accurate 2230 | <<locked>> | 84% | 49,110 psi | 82% | 2428 fps | 95.6% |
| Accurate 2460 | <<locked>> | 80% | 35,549 psi | 59% | 2182 fps | 96.5% |
| Accurate 2495 | <<locked>> | 80% | 25,469 psi | 42% | 1998 fps | 96.3% |
| Accurate 2520 | <<locked>> | 82% | 33,199 psi | 55% | 2169 fps | 95.2% |
| Accurate 4064 | <<locked>> | 86% | 29,312 psi | 49% | 2103 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 41,727 psi | 69% | 2205 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 80% | 42,090 psi | 70% | 2215 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 94% | 46,746 psi | 78% | 2402 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 44,846 psi | 75% | 2283 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 39,740 psi | 66% | 2277 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 41,336 psi | 69% | 2287 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 30,371 psi | 50% | 2129 fps | 99.7% |
| Alliant Power Pro 1200-R | 34.4 gr | 84% | 41,669 psi | 69% | 2362 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 40,234 psi | 67% | 2316 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,985 psi | 63% | 2215 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 98% | 47,079 psi | 78% | 2428 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 46,064 psi | 77% | 2293 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 40,045 psi | 67% | 2195 fps | 99.1% |
| Bofors RP3 | <<locked>> | 98% | 42,250 psi | 70% | 2365 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 38,986 psi | 65% | 2205 fps | 95.7% |
| Hodgdon BL-C2 | 38.3 gr | 88% | 38,493 psi | 64% | 2290 fps | 95.6% |
| Hodgdon CFE223 | <<locked>> | 92% | 49,182 psi | 82% | 2510 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 36,419 psi | 61% | 2215 fps | 98% |
| Hodgdon H335 | <<locked>> | 80% | 36,825 psi | 61% | 2228 fps | 97.1% |
| Hodgdon H4198 | <<locked>> | 80% | 45,963 psi | 76% | 2283 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 90% | 41,611 psi | 69% | 2323 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 42,496 psi | 71% | 2379 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,613 psi | 41% | 1302 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 43,076 psi | 72% | 2329 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 28,892 psi | 48% | 2100 fps | 96.3% |
| IMR 4064 | <<locked>> | 98% | 47,239 psi | 78% | 2382 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 39,117 psi | 65% | 2198 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 45,223 psi | 75% | 2411 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 88% | 41,336 psi | 69% | 2287 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 43,410 psi | 72% | 2326 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 82% | 37,652 psi | 63% | 2224 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 86% | 33,837 psi | 56% | 2195 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 50,720 psi | 84% | 2274 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 45,658 psi | 76% | 2313 fps | 95.3% |
| Lovex S062 | <<locked>> | 94% | 40,828 psi | 68% | 2293 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 42,786 psi | 71% | 2277 fps | 100% |
| Norma 201 | <<locked>> | 90% | 40,524 psi | 67% | 2274 fps | 95.6% |
| Norma 202 | <<locked>> | 82% | 31,415 psi | 52% | 2113 fps | 95.3% |
| Norma 203B | <<locked>> | 98% | 46,137 psi | 77% | 2418 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 98% | 46,572 psi | 77% | 2431 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 92% | 45,658 psi | 76% | 2392 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 88% | 45,353 psi | 75% | 2333 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,598 psi | 41% | 1335 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,303 psi | 60% | 2192 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 49,327 psi | 82% | 2523 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 38,566 psi | 64% | 2333 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 33,170 psi | 55% | 2113 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 92% | 40,843 psi | 68% | 2274 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 43,410 psi | 72% | 2326 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 33,837 psi | 56% | 2195 fps | 95.4% |
| Shooters World Precision | <<locked>> | 94% | 40,828 psi | 68% | 2293 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 40,930 psi | 68% | 2244 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 46,760 psi | 78% | 2093 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 40,350 psi | 67% | 2283 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,319 psi | 64% | 2218 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 45,339 psi | 75% | 2379 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,647 psi | 53% | 2044 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 29,037 psi | 48% | 2005 fps | 95.5% |
| Somchem S321 | <<locked>> | 84% | 38,827 psi | 65% | 2264 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 31,038 psi | 52% | 2047 fps | 96.1% |
| Somchem S341 | <<locked>> | 94% | 47,311 psi | 79% | 2395 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 44,889 psi | 75% | 2244 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 36,013 psi | 60% | 2136 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 31,430 psi | 52% | 2057 fps | 98% |
| Vihtavuori N135 | <<locked>> | 80% | 26,498 psi | 44% | 2011 fps | 96.5% |
| Vihtavuori N140 | <<locked>> | 82% | 29,733 psi | 49% | 2057 fps | 95% |
| Vihtavuori N150 | <<locked>> | 98% | 39,160 psi | 65% | 2264 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 86% | 38,870 psi | 65% | 2238 fps | 95% |
| Vihtavuori N540 | <<locked>> | 86% | 32,198 psi | 53% | 2126 fps | 95.3% |
| Winchester 748 | 36.8 gr | 86% | 37,101 psi | 62% | 2264 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 94% | 44,295 psi | 74% | 2379 fps | 95.6% |
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 92 powders for .307 Win. loaded with the .308 | 170gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,467 fps to 2,572 fps. Accurate 2495 gives the best case fill at 100 %, and 92 of the 92 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 170.0 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 2208 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. Winchester 748, Alliant Power Pro 1200-R, Hodgdon BL-C2 rank at the top here: for .307 Win. with the .308 | 170gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2208, Alliant Reloder-17, Hodgdon H380 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.