Load Specifications
Load data in caliber .307 Win. with .308 | 185gr | Lapua Mega bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, 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% | 53,214 psi | 88% | 2247 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 52,214 psi | 87% | 2303 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 53,679 psi | 89% | 2369 fps | 96.9% |
| Accurate 2230 | <<locked>> | 86% | 54,317 psi | 90% | 2382 fps | 97.4% |
| Accurate 2460 | <<locked>> | 92% | 54,172 psi | 90% | 2359 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 50,850 psi | 84% | 2343 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 51,387 psi | 85% | 2359 fps | 99.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 47,166 psi | 78% | 2323 fps | 99.7% |
| Accurate LT-30 | <<locked>> | 88% | 54,273 psi | 90% | 2267 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 51,750 psi | 86% | 2244 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 96% | 51,213 psi | 85% | 2352 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 84% | 51,996 psi | 86% | 2254 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 48,979 psi | 81% | 2300 fps | 96% |
| ADI AR 2219 | <<locked>> | 88% | 53,403 psi | 89% | 2365 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 54,259 psi | 90% | 2369 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 96% | 52,417 psi | 87% | 2369 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 52,083 psi | 87% | 2411 fps | 98.2% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 54,157 psi | 90% | 2474 fps | 96.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 46,949 psi | 78% | 2316 fps | 97.5% |
| Alliant Reloder-10x | <<locked>> | 90% | 52,866 psi | 88% | 2316 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 51,590 psi | 86% | 2379 fps | 96.9% |
| Alliant Reloder-7 | <<locked>> | 84% | 52,837 psi | 88% | 2264 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 52,895 psi | 88% | 2267 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 54,201 psi | 90% | 2408 fps | 96.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 46,775 psi | 78% | 2323 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 94% | 53,998 psi | 90% | 2326 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 96% | 51,924 psi | 86% | 2388 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 94% | 54,041 psi | 90% | 2461 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 90% | 51,663 psi | 86% | 2343 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 52,953 psi | 88% | 2365 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 84% | 53,040 psi | 88% | 2267 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 51,590 psi | 86% | 2365 fps | 98% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 52,765 psi | 88% | 2428 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,692 psi | 56% | 1388 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 53,476 psi | 89% | 2372 fps | 98.1% |
| IMR 3031 | <<locked>> | 98% | 52,924 psi | 88% | 2408 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 51,517 psi | 86% | 2329 fps | 96.8% |
| IMR 4198 | <<locked>> | 90% | 53,708 psi | 89% | 2287 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 52,823 psi | 88% | 2408 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 96% | 54,259 psi | 90% | 2369 fps | 98.8% |
| Lovex D073.4 | <<locked>> | 84% | 51,285 psi | 85% | 2326 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 90% | 50,691 psi | 84% | 2320 fps | 99% |
| Lovex D073.6 | <<locked>> | 98% | 52,286 psi | 87% | 2382 fps | 99.6% |
| Lovex S060 | <<locked>> | 96% | 52,663 psi | 87% | 2306 fps | 97.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 50,386 psi | 84% | 2333 fps | 98.4% |
| Norma 200 | <<locked>> | 86% | 53,011 psi | 88% | 2297 fps | 100% |
| Norma 201 | <<locked>> | 98% | 52,968 psi | 88% | 2352 fps | 98.7% |
| Norma 202 | <<locked>> | 98% | 53,432 psi | 89% | 2372 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 50,575 psi | 84% | 2369 fps | 97.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 50,966 psi | 85% | 2385 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 96% | 53,693 psi | 89% | 2395 fps | 97.7% |
| Ramshot X-Terminator | <<locked>> | 92% | 53,040 psi | 88% | 2333 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,620 psi | 56% | 1417 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 54,273 psi | 90% | 2365 fps | 99.6% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 53,983 psi | 90% | 2474 fps | 97.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 44,991 psi | 75% | 2352 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 96% | 54,273 psi | 90% | 2352 fps | 99.9% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 53,505 psi | 89% | 2352 fps | 98.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 43,250 psi | 72% | 2264 fps | 96.4% |
| Shooters World AR Plus | <<locked>> | 84% | 51,285 psi | 85% | 2326 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 98% | 52,286 psi | 87% | 2382 fps | 99.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 50,386 psi | 84% | 2333 fps | 98.4% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 51,430 psi | 85% | 2297 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 52,562 psi | 87% | 2044 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 53,635 psi | 89% | 2369 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 45,847 psi | 76% | 2316 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 53,592 psi | 89% | 2329 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 52,707 psi | 88% | 2372 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 53,200 psi | 88% | 2287 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 48,443 psi | 80% | 2238 fps | 99.9% |
| Somchem S321 | <<locked>> | 92% | 52,112 psi | 87% | 2362 fps | 98.8% |
| Somchem S335 | <<locked>> | 96% | 51,590 psi | 86% | 2287 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 52,054 psi | 86% | 2352 fps | 97.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 44,744 psi | 74% | 2270 fps | 96.5% |
| Vihtavuori N120 | <<locked>> | 84% | 51,982 psi | 86% | 2215 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 53,127 psi | 88% | 2274 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 52,678 psi | 88% | 2283 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 51,227 psi | 85% | 2336 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 53,505 psi | 89% | 2349 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 42,960 psi | 71% | 2221 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 94% | 51,459 psi | 85% | 2326 fps | 98.5% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 51,808 psi | 86% | 2346 fps | 99.8% |
| Winchester 748 | <<locked>> | 96% | 53,258 psi | 88% | 2411 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 52,257 psi | 87% | 2382 fps | 98% |
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% | 49,893 psi | 83% | 2205 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,011 psi | 57% | 2028 fps | 99.2% |
| Accurate 2200 | <<locked>> | 82% | 47,079 psi | 78% | 2274 fps | 95.5% |
| Accurate 2230 | <<locked>> | 80% | 43,758 psi | 73% | 2228 fps | 95.1% |
| Accurate 2460 | <<locked>> | 80% | 36,405 psi | 60% | 2093 fps | 97.5% |
| Accurate 2495 | <<locked>> | 80% | 26,513 psi | 44% | 1926 fps | 97.5% |
| Accurate 2520 | <<locked>> | 80% | 31,763 psi | 53% | 2037 fps | 95.5% |
| Accurate 4064 | <<locked>> | 84% | 28,500 psi | 47% | 1985 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 42,685 psi | 71% | 2110 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 80% | 43,062 psi | 72% | 2119 fps | 98.5% |
| ADI AR 2206H | <<locked>> | 90% | 42,728 psi | 71% | 2224 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 45,905 psi | 76% | 2178 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 46,325 psi | 77% | 2260 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 40,944 psi | 68% | 2185 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 37,405 psi | 62% | 2110 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 31,096 psi | 52% | 2041 fps | 100% |
| Alliant Power Pro 1200-R | 32 gr | 82% | 39,871 psi | 66% | 2218 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 50,792 psi | 84% | 2425 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 38,943 psi | 65% | 2185 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,972 psi | 65% | 2119 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 45,411 psi | 75% | 2287 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 46,891 psi | 78% | 2188 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 40,944 psi | 68% | 2103 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 47,427 psi | 79% | 2310 fps | 95.1% |
| Bofors RP3 | <<locked>> | 94% | 38,203 psi | 63% | 2185 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,549 psi | 59% | 2034 fps | 95.4% |
| Hodgdon BL-C2 | 35 gr | 84% | 34,896 psi | 58% | 2113 fps | 95.2% |
| Hodgdon CFE223 | 37.5 gr | 88% | 44,353 psi | 74% | 2316 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 37,304 psi | 62% | 2123 fps | 98.7% |
| Hodgdon H335 | <<locked>> | 80% | 37,797 psi | 63% | 2139 fps | 98% |
| Hodgdon H4198 | <<locked>> | 80% | 47,050 psi | 78% | 2185 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 88% | 40,321 psi | 67% | 2188 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 38,247 psi | 64% | 2192 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,758 psi | 41% | 1234 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 41,394 psi | 69% | 2192 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 29,805 psi | 50% | 2021 fps | 97.5% |
| IMR 4064 | <<locked>> | 96% | 45,643 psi | 76% | 2244 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 40,147 psi | 67% | 2103 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 43,497 psi | 72% | 2270 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 84% | 37,405 psi | 62% | 2110 fps | 95.3% |
| Lovex D073.4 | <<locked>> | 80% | 44,498 psi | 74% | 2231 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 80% | 36,085 psi | 60% | 2090 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 30,647 psi | 51% | 2024 fps | 95% |
| Lovex S060 | <<locked>> | 88% | 41,379 psi | 69% | 2136 fps | 95% |
| Lovex S062 | <<locked>> | 90% | 37,173 psi | 62% | 2119 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 44,063 psi | 73% | 2182 fps | 100% |
| Norma 201 | <<locked>> | 86% | 36,956 psi | 61% | 2103 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 30,240 psi | 50% | 1985 fps | 95.7% |
| Norma 203B | <<locked>> | 94% | 41,742 psi | 69% | 2231 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 96% | 44,599 psi | 74% | 2287 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 44,063 psi | 73% | 2254 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 43,772 psi | 73% | 2198 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,801 psi | 41% | 1263 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,275 psi | 62% | 2106 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 44,338 psi | 74% | 2326 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 37,028 psi | 62% | 2201 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 34,055 psi | 57% | 2028 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 88% | 37,043 psi | 62% | 2096 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 98% | 40,785 psi | 68% | 2221 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 44,498 psi | 74% | 2231 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 30,647 psi | 51% | 2024 fps | 95% |
| Shooters World Precision | <<locked>> | 90% | 37,173 psi | 62% | 2119 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,378 psi | 65% | 2113 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,340 psi | 79% | 1985 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 41,336 psi | 69% | 2188 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 43,033 psi | 71% | 2270 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,668 psi | 66% | 2129 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 43,656 psi | 73% | 2238 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,706 psi | 54% | 1965 fps | 96.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,469 psi | 44% | 1850 fps | 95.2% |
| Somchem S321 | <<locked>> | 82% | 37,362 psi | 62% | 2129 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 31,952 psi | 53% | 1969 fps | 97.2% |
| Somchem S341 | <<locked>> | 90% | 42,308 psi | 70% | 2208 fps | 95% |
| Somchem S355 | <<locked>> | 96% | 39,668 psi | 66% | 2185 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 45,905 psi | 76% | 2139 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,188 psi | 62% | 2051 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 80% | 32,518 psi | 54% | 1978 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 80% | 27,528 psi | 46% | 1939 fps | 97.7% |
| Vihtavuori N140 | <<locked>> | 80% | 28,616 psi | 48% | 1936 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 94% | 35,563 psi | 59% | 2093 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 84% | 37,362 psi | 62% | 2106 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 84% | 31,125 psi | 52% | 2005 fps | 95.8% |
| Winchester 748 | <<locked>> | 84% | 35,665 psi | 59% | 2129 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 40,074 psi | 67% | 2198 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 84 powders for .307 Win. loaded with the .308 | 185gr | Lapua Mega. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,474 fps; across all powders the maximum-charge window runs from 1,388 fps to 2,474 fps. Accurate 2495 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.308" calls for a 1:15.5 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Hodgdon BL-C2 rank at the top here: for .307 Win. with the .308 | 185gr | Lapua Mega 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.