Load Specifications
Bullet Manufacturer:A-Square
Bullet Weight:180 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.307 Win. load data
Case Length (l3):2.014"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:54 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:20"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:6.0
Load data in caliber .307 Win. with .308 | 180gr | A-Square MONO RN bullet and 84 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.
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% | 53,867 psi | 89% | 2303 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 53,214 psi | 88% | 2365 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 51,053 psi | 85% | 2385 fps | 96.4% |
| Accurate 2230 | <<locked>> | 84% | 51,300 psi | 85% | 2392 fps | 96.8% |
| Accurate 2460 | <<locked>> | 90% | 51,909 psi | 86% | 2382 fps | 99.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 51,953 psi | 86% | 2405 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 52,692 psi | 88% | 2425 fps | 99.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 48,182 psi | 80% | 2385 fps | 99.8% |
| Accurate LT-30 | <<locked>> | 86% | 51,764 psi | 86% | 2287 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 52,141 psi | 87% | 2300 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 96% | 52,185 psi | 87% | 2418 fps | 97.5% |
| ADI AR 2207 | <<locked>> | 84% | 52,765 psi | 88% | 2313 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 49,792 psi | 83% | 2362 fps | 96.2% |
| ADI AR 2219 | <<locked>> | 88% | 54,317 psi | 90% | 2425 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 51,996 psi | 86% | 2388 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 96% | 53,316 psi | 89% | 2428 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 53,098 psi | 88% | 2477 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 51,605 psi | 86% | 2490 fps | 96% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 48,225 psi | 80% | 2382 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 90% | 53,737 psi | 89% | 2379 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 52,373 psi | 87% | 2441 fps | 97% |
| Alliant Reloder-7 | <<locked>> | 84% | 53,896 psi | 90% | 2326 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 53,780 psi | 89% | 2329 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 51,808 psi | 86% | 2428 fps | 96.2% |
| Bofors RP3ᴾ | <<locked>> | 100% | 47,935 psi | 80% | 2388 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 92% | 51,590 psi | 86% | 2343 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 96% | 53,040 psi | 88% | 2454 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 92% | 51,445 psi | 85% | 2477 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 90% | 52,649 psi | 87% | 2405 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 53,954 psi | 90% | 2431 fps | 99.9% |
| Hodgdon H4198 | <<locked>> | 84% | 53,635 psi | 89% | 2326 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 52,591 psi | 87% | 2431 fps | 98.1% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 53,708 psi | 89% | 2490 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,591 psi | 56% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 54,389 psi | 90% | 2434 fps | 98.3% |
| IMR 3031 | <<locked>> | 98% | 54,244 psi | 90% | 2474 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 52,388 psi | 87% | 2395 fps | 97% |
| IMR 4198 | <<locked>> | 88% | 51,430 psi | 85% | 2310 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 53,635 psi | 89% | 2470 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 94% | 51,996 psi | 86% | 2388 fps | 98.5% |
| Lovex D073.4 | <<locked>> | 84% | 52,257 psi | 87% | 2388 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 90% | 51,663 psi | 86% | 2382 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 98% | 53,548 psi | 89% | 2448 fps | 99.7% |
| Lovex S060 | <<locked>> | 96% | 53,243 psi | 88% | 2365 fps | 97.7% |
| Lovex S062ᴾ | <<locked>> | 100% | 51,314 psi | 85% | 2395 fps | 98.5% |
| Norma 200 | <<locked>> | 86% | 53,911 psi | 90% | 2359 fps | 100% |
| Norma 201 | <<locked>> | 98% | 54,012 psi | 90% | 2418 fps | 98.8% |
| Norma 202 | <<locked>> | 98% | 54,447 psi | 90% | 2434 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 51,358 psi | 85% | 2428 fps | 97.4% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 52,083 psi | 87% | 2454 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 94% | 51,155 psi | 85% | 2411 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 92% | 53,853 psi | 89% | 2395 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,823 psi | 56% | 1457 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 52,156 psi | 87% | 2388 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 51,706 psi | 86% | 2490 fps | 96.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 45,759 psi | 76% | 2418 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 94% | 52,301 psi | 87% | 2375 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 98% | 51,198 psi | 85% | 2372 fps | 98.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 44,454 psi | 74% | 2329 fps | 96.6% |
| Shooters World AR Plus | <<locked>> | 84% | 52,257 psi | 87% | 2388 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 98% | 53,548 psi | 89% | 2448 fps | 99.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 51,314 psi | 85% | 2395 fps | 98.5% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 52,504 psi | 87% | 2359 fps | 98.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 53,359 psi | 89% | 2100 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 51,155 psi | 85% | 2385 fps | 99.8% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 47,036 psi | 78% | 2382 fps | 96.2% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 51,503 psi | 86% | 2352 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 53,838 psi | 89% | 2438 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 54,085 psi | 90% | 2349 fps | 99.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 49,429 psi | 82% | 2300 fps | 99.9% |
| Somchem S321 | <<locked>> | 92% | 52,924 psi | 88% | 2421 fps | 98.9% |
| Somchem S335 | <<locked>> | 96% | 52,257 psi | 87% | 2343 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 53,084 psi | 88% | 2415 fps | 97.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 45,629 psi | 76% | 2333 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 84% | 52,736 psi | 88% | 2270 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 53,751 psi | 89% | 2333 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 53,563 psi | 89% | 2343 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 52,460 psi | 87% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 51,503 psi | 86% | 2372 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 44,077 psi | 73% | 2283 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 94% | 52,533 psi | 87% | 2388 fps | 98.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 52,852 psi | 88% | 2408 fps | 99.8% |
| Winchester 748 | <<locked>> | 96% | 54,056 psi | 90% | 2470 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 98% | 53,229 psi | 88% | 2444 fps | 98.2% |
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 50,691 psi | 84% | 2264 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,737 psi | 58% | 2083 fps | 99.3% |
| Accurate 2200 | <<locked>> | 82% | 47,935 psi | 80% | 2336 fps | 95.7% |
| Accurate 2230 | <<locked>> | 80% | 44,802 psi | 74% | 2293 fps | 95.3% |
| Accurate 2460 | <<locked>> | 80% | 37,115 psi | 62% | 2149 fps | 97.6% |
| Accurate 2495 | <<locked>> | 80% | 27,108 psi | 45% | 1978 fps | 97.7% |
| Accurate 2520 | <<locked>> | 80% | 32,721 psi | 54% | 2096 fps | 95.8% |
| Accurate 4064 | <<locked>> | 84% | 29,225 psi | 49% | 2041 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 43,366 psi | 72% | 2169 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 80% | 43,714 psi | 73% | 2178 fps | 98.6% |
| ADI AR 2206H | <<locked>> | 90% | 43,526 psi | 72% | 2283 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 46,847 psi | 78% | 2238 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 46,847 psi | 78% | 2316 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 41,408 psi | 69% | 2241 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 38,072 psi | 63% | 2165 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 31,720 psi | 53% | 2096 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 40,799 psi | 68% | 2280 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 48,124 psi | 80% | 2431 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 39,958 psi | 66% | 2247 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,494 psi | 66% | 2175 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 46,340 psi | 77% | 2349 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,601 psi | 79% | 2247 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,800 psi | 69% | 2162 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 48,399 psi | 80% | 2375 fps | 95.4% |
| Bofors RP3 | <<locked>> | 94% | 39,117 psi | 65% | 2244 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,056 psi | 60% | 2087 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 84% | 35,375 psi | 59% | 2165 fps | 95.3% |
| Hodgdon CFE223 | <<locked>> | 88% | 45,223 psi | 75% | 2379 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 37,898 psi | 63% | 2178 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 80% | 38,435 psi | 64% | 2192 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 80% | 47,732 psi | 79% | 2244 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 88% | 40,857 psi | 68% | 2244 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 39,088 psi | 65% | 2254 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,990 psi | 42% | 1270 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 39,682 psi | 66% | 2208 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 30,429 psi | 51% | 2077 fps | 97.7% |
| IMR 4064 | <<locked>> | 94% | 43,859 psi | 73% | 2264 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 40,785 psi | 68% | 2159 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 41,858 psi | 70% | 2290 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 84% | 38,072 psi | 63% | 2165 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 80% | 45,252 psi | 75% | 2290 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 37,028 psi | 62% | 2149 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 31,299 psi | 52% | 2077 fps | 95.2% |
| Lovex S060 | <<locked>> | 88% | 42,293 psi | 70% | 2198 fps | 95.2% |
| Lovex S062 | <<locked>> | 90% | 38,014 psi | 63% | 2182 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 44,788 psi | 74% | 2238 fps | 100% |
| Norma 201 | <<locked>> | 86% | 37,623 psi | 63% | 2159 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 30,777 psi | 51% | 2037 fps | 95.8% |
| Norma 203B | <<locked>> | 94% | 42,685 psi | 71% | 2293 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 96% | 45,484 psi | 76% | 2352 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 41,959 psi | 70% | 2267 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 86% | 44,454 psi | 74% | 2254 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,019 psi | 42% | 1299 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,739 psi | 63% | 2159 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 45,194 psi | 75% | 2388 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 35,433 psi | 59% | 2211 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 34,722 psi | 58% | 2083 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 88% | 37,971 psi | 63% | 2159 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 96% | 39,030 psi | 65% | 2238 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 45,252 psi | 75% | 2290 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 31,299 psi | 52% | 2077 fps | 95.2% |
| Shooters World Precision | <<locked>> | 90% | 38,014 psi | 63% | 2182 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,972 psi | 66% | 2169 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,863 psi | 80% | 2037 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,032 psi | 70% | 2247 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 43,976 psi | 73% | 2333 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,132 psi | 67% | 2185 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 44,585 psi | 74% | 2300 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,083 psi | 55% | 2014 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,789 psi | 45% | 1896 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 35,621 psi | 59% | 2139 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 32,518 psi | 54% | 2021 fps | 97.3% |
| Somchem S341 | <<locked>> | 90% | 43,091 psi | 72% | 2267 fps | 95.2% |
| Somchem S355 | <<locked>> | 96% | 40,277 psi | 67% | 2241 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 46,818 psi | 78% | 2198 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,652 psi | 63% | 2100 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 80% | 32,938 psi | 55% | 2028 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 80% | 27,920 psi | 46% | 1988 fps | 97.8% |
| Vihtavuori N140 | <<locked>> | 80% | 29,124 psi | 48% | 1988 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 94% | 36,448 psi | 61% | 2156 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 84% | 38,014 psi | 63% | 2162 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 82% | 29,762 psi | 49% | 2014 fps | 95.1% |
| Winchester 748 | <<locked>> | 82% | 34,287 psi | 57% | 2142 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 40,654 psi | 68% | 2254 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 96 powders for .307 Win. loaded with the .308 | 180gr | A-Square MONO RN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,490 fps; across all powders the maximum-charge window runs from 1,424 fps to 2,490 fps. Accurate 2495 gives the best case fill at 100 %, and 96 of the 96 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 180.0 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. As outliers, Hodgdon H380, Hodgdon Hybrid 100V, IMR 4166 Enduron 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.