Load Specifications
Load data in caliber .307 Win. with .308 | 170gr | Prvi Partizan FSP bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Winchester 748 and Accurate 2520.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 51,242 psi | 85% | 2333 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 52,982 psi | 88% | 2428 fps | 100% |
| Accurate 2230 | <<locked>> | 86% | 51,459 psi | 85% | 2451 fps | 96% |
| Accurate 2460 | <<locked>> | 92% | 51,561 psi | 86% | 2438 fps | 99.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 47,950 psi | 80% | 2418 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 52,286 psi | 87% | 2484 fps | 99.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 44,498 psi | 74% | 2392 fps | 99.1% |
| Accurate LT-30 | <<locked>> | 88% | 52,344 psi | 87% | 2352 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 88% | 52,794 psi | 88% | 2365 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 98% | 52,083 psi | 87% | 2474 fps | 96.7% |
| ADI AR 2207 | <<locked>> | 86% | 52,591 psi | 87% | 2379 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 50,778 psi | 84% | 2444 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 96% | 51,924 psi | 86% | 2448 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 98% | 52,808 psi | 88% | 2493 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 52,678 psi | 88% | 2533 fps | 97.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 44,469 psi | 74% | 2382 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 92% | 53,534 psi | 89% | 2441 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 54,288 psi | 90% | 2398 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 53,954 psi | 90% | 2392 fps | 100% |
| Bofors RP3ᴾ | <<locked>> | 100% | 44,048 psi | 73% | 2385 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 94% | 51,648 psi | 86% | 2402 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 98% | 53,113 psi | 88% | 2516 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 94% | 51,648 psi | 86% | 2536 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 92% | 52,881 psi | 88% | 2470 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 92% | 53,708 psi | 89% | 2490 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 86% | 54,259 psi | 90% | 2395 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 98% | 52,359 psi | 87% | 2487 fps | 97.3% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 50,357 psi | 84% | 2500 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,199 psi | 55% | 1453 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 54,346 psi | 90% | 2493 fps | 97.5% |
| IMR 3031ᴾ | <<locked>> | 100% | 53,664 psi | 89% | 2536 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 51,822 psi | 86% | 2379 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 54,317 psi | 90% | 2343 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 50,053 psi | 83% | 2480 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 96% | 51,924 psi | 86% | 2448 fps | 97.9% |
| Lovex D073.4 | <<locked>> | 86% | 52,388 psi | 87% | 2454 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 92% | 51,866 psi | 86% | 2444 fps | 98.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 53,069 psi | 88% | 2503 fps | 99.3% |
| Lovex S053 | <<locked>> | 82% | 53,127 psi | 88% | 2297 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 53,447 psi | 89% | 2421 fps | 96.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 47,979 psi | 80% | 2405 fps | 97.3% |
| Norma 200 | <<locked>> | 88% | 53,664 psi | 89% | 2425 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 53,896 psi | 90% | 2474 fps | 98.2% |
| Norma 202ᴾ | <<locked>> | 100% | 53,766 psi | 89% | 2490 fps | 99.7% |
| Norma 203Bᴾ | <<locked>> | 100% | 47,993 psi | 80% | 2438 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 96% | 50,937 psi | 85% | 2464 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 94% | 53,838 psi | 89% | 2451 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,388 psi | 55% | 1490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 51,996 psi | 86% | 2444 fps | 99% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 51,430 psi | 85% | 2546 fps | 95.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 43,004 psi | 71% | 2415 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 96% | 52,112 psi | 87% | 2434 fps | 99.4% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 51,068 psi | 85% | 2428 fps | 97.8% |
| Shooters World AR Plus | <<locked>> | 86% | 52,388 psi | 87% | 2454 fps | 99.1% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 53,069 psi | 88% | 2503 fps | 99.3% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 47,979 psi | 80% | 2405 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 52,576 psi | 87% | 2415 fps | 97.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 53,693 psi | 89% | 2165 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 51,387 psi | 85% | 2451 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 51,300 psi | 85% | 2415 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 53,708 psi | 89% | 2493 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 54,186 psi | 90% | 2408 fps | 99.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 46,354 psi | 77% | 2316 fps | 99.5% |
| Somchem S321 | <<locked>> | 94% | 53,156 psi | 88% | 2487 fps | 98.3% |
| Somchem S335 | <<locked>> | 98% | 52,228 psi | 87% | 2405 fps | 99.8% |
| Somchem S341 | <<locked>> | 98% | 52,924 psi | 88% | 2467 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 86% | 52,620 psi | 87% | 2339 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 53,766 psi | 89% | 2395 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 53,490 psi | 89% | 2405 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 48,704 psi | 81% | 2418 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 51,300 psi | 85% | 2431 fps | 99.6% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 41,075 psi | 68% | 2290 fps | 96% |
| Vihtavuori N530 | <<locked>> | 96% | 52,460 psi | 87% | 2448 fps | 98% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 49,545 psi | 82% | 2425 fps | 99.2% |
| Winchester 748 | <<locked>> | 98% | 53,838 psi | 89% | 2530 fps | 98.9% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2500 fps | 97.4% |
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% | 48,138 psi | 80% | 2290 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 32,416 psi | 54% | 2093 fps | 98.3% |
| Accurate 2230 | <<locked>> | 84% | 48,211 psi | 80% | 2405 fps | 95.2% |
| Accurate 2460 | <<locked>> | 80% | 34,664 psi | 58% | 2156 fps | 96% |
| Accurate 2495 | <<locked>> | 80% | 24,903 psi | 41% | 1978 fps | 95.9% |
| Accurate 2520 | 35.5 gr | 84% | 34,563 psi | 57% | 2192 fps | 95.5% |
| Accurate 4064 | <<locked>> | 88% | 30,443 psi | 51% | 2126 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 41,104 psi | 68% | 2185 fps | 99% |
| Accurate LT-32 | <<locked>> | 80% | 41,481 psi | 69% | 2195 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 94% | 46,035 psi | 76% | 2382 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 44,034 psi | 73% | 2264 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 38,856 psi | 65% | 2254 fps | 98.4% |
| ADI Benchmark 8208 | <<locked>> | 88% | 40,553 psi | 67% | 2264 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 29,559 psi | 49% | 2103 fps | 99.5% |
| Alliant Power Pro 1200-R | 34.5 gr | 86% | 43,381 psi | 72% | 2385 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 42,061 psi | 70% | 2343 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,275 psi | 62% | 2195 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 45,020 psi | 75% | 2270 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,349 psi | 65% | 2175 fps | 98.8% |
| Bofors RP3 | <<locked>> | 98% | 41,234 psi | 69% | 2339 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 38,479 psi | 64% | 2185 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 88% | 37,768 psi | 63% | 2270 fps | 95.2% |
| Hodgdon CFE223 | <<locked>> | 92% | 48,153 psi | 80% | 2480 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 35,505 psi | 59% | 2188 fps | 97.6% |
| Hodgdon H335 | <<locked>> | 80% | 36,056 psi | 60% | 2205 fps | 96.7% |
| Hodgdon H4198 | <<locked>> | 80% | 45,324 psi | 75% | 2267 fps | 99.2% |
| Hodgdon H4895 | <<locked>> | 92% | 43,482 psi | 72% | 2346 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 41,582 psi | 69% | 2352 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,555 psi | 41% | 1296 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 45,063 psi | 75% | 2356 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 28,369 psi | 47% | 2077 fps | 95.9% |
| IMR 4198 | <<locked>> | 80% | 38,682 psi | 64% | 2185 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 51,314 psi | 85% | 2306 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 46,992 psi | 78% | 2431 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 88% | 40,553 psi | 67% | 2264 fps | 95.3% |
| Lovex D073.4 | <<locked>> | 80% | 42,424 psi | 70% | 2303 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 82% | 36,854 psi | 61% | 2201 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 88% | 35,592 psi | 59% | 2224 fps | 95.8% |
| Lovex S053 | <<locked>> | 80% | 50,285 psi | 84% | 2264 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 47,732 psi | 79% | 2336 fps | 95.7% |
| Lovex S062 | <<locked>> | 94% | 40,074 psi | 67% | 2274 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 42,047 psi | 70% | 2260 fps | 100% |
| Norma 201 | <<locked>> | 90% | 39,711 psi | 66% | 2251 fps | 95.1% |
| Norma 202 | <<locked>> | 84% | 32,619 psi | 54% | 2133 fps | 95.6% |
| Norma 203B | <<locked>> | 98% | 45,020 psi | 75% | 2392 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 94% | 47,877 psi | 80% | 2418 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 90% | 47,427 psi | 79% | 2356 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,540 psi | 41% | 1325 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,476 psi | 59% | 2169 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 48,182 psi | 80% | 2493 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 40,147 psi | 67% | 2356 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 32,561 psi | 54% | 2093 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 92% | 40,059 psi | 67% | 2251 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 42,424 psi | 70% | 2303 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 35,592 psi | 59% | 2224 fps | 95.8% |
| Shooters World Precision | <<locked>> | 94% | 40,074 psi | 67% | 2274 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 43,076 psi | 72% | 2274 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,876 psi | 76% | 2073 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 39,508 psi | 66% | 2260 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,565 psi | 62% | 2198 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 47,456 psi | 79% | 2402 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 33,156 psi | 55% | 2070 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 28,558 psi | 47% | 1988 fps | 95.1% |
| Somchem S321 | <<locked>> | 86% | 40,538 psi | 67% | 2287 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 30,501 psi | 51% | 2031 fps | 95.8% |
| Somchem S341 | <<locked>> | 94% | 46,354 psi | 77% | 2372 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 44,121 psi | 73% | 2228 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,375 psi | 59% | 2116 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 80% | 30,835 psi | 51% | 2037 fps | 97.7% |
| Vihtavuori N135 | <<locked>> | 80% | 25,918 psi | 43% | 1988 fps | 96.1% |
| Vihtavuori N140 | <<locked>> | 84% | 30,908 psi | 51% | 2080 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 98% | 38,508 psi | 64% | 2244 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 88% | 40,596 psi | 67% | 2260 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 88% | 33,808 psi | 56% | 2156 fps | 95.8% |
| Winchester 748 | 36.9 gr | 88% | 38,711 psi | 64% | 2287 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 94% | 43,294 psi | 72% | 2352 fps | 95.2% |
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 76 powders for .307 Win. loaded with the .308 | 170gr | Prvi Partizan FSP. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,546 fps; across all powders the maximum-charge window runs from 1,453 fps to 2,546 fps. Accurate 2495 gives the best case fill at 100 %, and 76 of the 76 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 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant Reloder- TS 15.5 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. Alliant Power Pro 1200-R, Winchester 748, Accurate 2520 rank at the top here: for .307 Win. with the .308 | 170gr | Prvi Partizan FSP 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.