Load Specifications
Bullet:.31 | 200gr | Lapua D166
Bullet Manufacturer:Lapua
Bullet Weight:200 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.014"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:59 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:13.0
Load data in caliber .308 Win. Ackley Improved with .31 | 200gr | Lapua D166 bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 54,099 psi | 90% | 2369 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 52,228 psi | 87% | 2392 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 51,068 psi | 85% | 2385 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,737 psi | 89% | 2448 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 54,172 psi | 90% | 2464 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,238 psi | 77% | 2431 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 82% | 53,766 psi | 89% | 2320 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,172 psi | 90% | 2339 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 52,765 psi | 88% | 2451 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 53,722 psi | 89% | 2451 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 82% | 54,230 psi | 90% | 2425 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 52,141 psi | 87% | 2411 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 51,924 psi | 86% | 2392 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,751 psi | 89% | 2503 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 51,982 psi | 86% | 2549 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,098 psi | 88% | 2470 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 53,853 psi | 89% | 2372 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 53,983 psi | 90% | 2490 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,137 psi | 77% | 2438 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,461 psi | 89% | 2572 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,547 psi | 54% | 2201 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 52,533 psi | 87% | 2320 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 52,446 psi | 87% | 2467 fps | 99.2% |
| Bofors RP3 | <<locked>> | 96% | 53,359 psi | 89% | 2484 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,273 psi | 90% | 2448 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,389 psi | 90% | 2398 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,201 psi | 90% | 2484 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 52,562 psi | 87% | 2523 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 53,084 psi | 88% | 2411 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 53,737 psi | 89% | 2434 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 51,300 psi | 85% | 2444 fps | 98.6% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,893 psi | 83% | 2477 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 90% | 53,200 psi | 88% | 2461 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,293 psi | 70% | 2336 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 51,677 psi | 86% | 2487 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 51,169 psi | 85% | 2507 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,809 psi | 58% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 51,401 psi | 85% | 2421 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 52,823 psi | 88% | 2451 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 53,258 psi | 88% | 2434 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,128 psi | 90% | 2418 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 54,244 psi | 90% | 2333 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,113 psi | 88% | 2434 fps | 96.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,237 psi | 73% | 2382 fps | 98% |
| IMR 4895 | <<locked>> | 92% | 51,982 psi | 86% | 2474 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 52,141 psi | 87% | 2411 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 52,156 psi | 87% | 2402 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 51,851 psi | 86% | 2434 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,113 psi | 88% | 2392 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 52,707 psi | 88% | 2434 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,590 psi | 86% | 2425 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,892 psi | 81% | 2405 fps | 96.4% |
| Norma 201 | <<locked>> | 90% | 51,532 psi | 86% | 2405 fps | 100% |
| Norma 202 | <<locked>> | 90% | 52,127 psi | 87% | 2411 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,040 psi | 88% | 2477 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 46,238 psi | 77% | 2425 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 94% | 53,287 psi | 89% | 2500 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,629 psi | 76% | 2418 fps | 96.3% |
| Ramshot TAC | <<locked>> | 88% | 52,634 psi | 87% | 2428 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 88% | 51,735 psi | 86% | 2444 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 53,563 psi | 89% | 2418 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,157 psi | 58% | 1483 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 52,112 psi | 87% | 2402 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 51,982 psi | 86% | 2428 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,548 psi | 89% | 2543 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,243 psi | 88% | 2575 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,992 psi | 76% | 2451 fps | 98% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,224 psi | 78% | 2470 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 88% | 52,910 psi | 88% | 2392 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 51,909 psi | 86% | 2402 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 52,881 psi | 88% | 2470 fps | 99.9% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,273 psi | 90% | 2448 fps | 96.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,590 psi | 86% | 2425 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 51,851 psi | 86% | 2434 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 52,707 psi | 88% | 2434 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,892 psi | 81% | 2405 fps | 96.4% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 51,561 psi | 86% | 2372 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 51,285 psi | 85% | 2480 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 51,445 psi | 85% | 2349 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 53,925 psi | 90% | 2451 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,462 psi | 90% | 2474 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 53,824 psi | 89% | 2356 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,345 psi | 89% | 2356 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 51,953 psi | 86% | 2382 fps | 96.6% |
| Somchem S321 | <<locked>> | 86% | 53,200 psi | 88% | 2444 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 52,721 psi | 88% | 2356 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,606 psi | 89% | 2448 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 53,519 psi | 89% | 2467 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,350 psi | 69% | 2385 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 53,882 psi | 90% | 2329 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 53,809 psi | 89% | 2346 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,317 psi | 90% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 52,446 psi | 87% | 2392 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 51,648 psi | 86% | 2411 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,762 psi | 81% | 2425 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 88% | 52,823 psi | 88% | 2415 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 53,838 psi | 89% | 2431 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,761 psi | 79% | 2431 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,374 psi | 57% | 2267 fps | 96.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,922 psi | 83% | 2415 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 51,779 psi | 86% | 2454 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 50,212 psi | 83% | 2484 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,027 psi | 90% | 2480 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 42,337 psi | 70% | 2215 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,861 psi | 76% | 2306 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,809 psi | 58% | 2146 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,118 psi | 68% | 2270 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 32,909 psi | 55% | 2136 fps | 99.6% |
| Accurate 4350 | <<locked>> | 92% | 35,259 psi | 59% | 2241 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 50,531 psi | 84% | 2280 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,937 psi | 85% | 2300 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,827 psi | 65% | 2231 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 33,098 psi | 55% | 2100 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 50,879 psi | 85% | 2385 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,857 psi | 68% | 2241 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 39,987 psi | 66% | 2238 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,326 psi | 79% | 2411 fps | 99.6% |
| Alliant Power Pro 2000-MR | 39 gr | 80% | 34,954 psi | 58% | 2238 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,184 psi | 53% | 2119 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,790 psi | 79% | 2293 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,751 psi | 58% | 2172 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 92% | 36,477 psi | 61% | 2254 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,633 psi | 53% | 2175 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,719 psi | 51% | 2156 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,617 psi | 82% | 2283 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,695 psi | 63% | 2231 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 31,473 psi | 52% | 2119 fps | 96.9% |
| Bofors RP7 | <<locked>> | 96% | 47,935 psi | 80% | 2359 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,772 psi | 71% | 2234 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,928 psi | 65% | 2257 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,685 psi | 71% | 2372 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 46,412 psi | 77% | 2326 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,239 psi | 78% | 2349 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 36,985 psi | 61% | 2208 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 98% | 46,891 psi | 78% | 2431 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 39,131 psi | 65% | 2241 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,154 psi | 52% | 2116 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,896 psi | 58% | 2208 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 98% | 47,761 psi | 79% | 2454 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,817 psi | 43% | 1293 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,739 psi | 63% | 2201 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 37,956 psi | 63% | 2238 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,635 psi | 58% | 2129 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 44,918 psi | 75% | 2280 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 48,428 psi | 80% | 2260 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,079 psi | 78% | 2346 fps | 95.5% |
| IMR 4831 | <<locked>> | 92% | 34,272 psi | 57% | 2201 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 35,549 psi | 59% | 2198 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 80% | 40,857 psi | 68% | 2241 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 45,455 psi | 76% | 2310 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 37,173 psi | 62% | 2215 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 39,566 psi | 66% | 2182 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 34,418 psi | 57% | 2136 fps | 98% |
| Lovex S065 | <<locked>> | 92% | 40,480 psi | 67% | 2251 fps | 95.5% |
| Lovex S070 | <<locked>> | 96% | 43,250 psi | 72% | 2316 fps | 95% |
| Norma 201 | <<locked>> | 80% | 38,116 psi | 63% | 2192 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 38,145 psi | 63% | 2205 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 34,156 psi | 57% | 2162 fps | 96.6% |
| Norma URP | <<locked>> | 92% | 36,027 psi | 60% | 2241 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 33,547 psi | 56% | 2169 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 98% | 42,989 psi | 71% | 2372 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 40,495 psi | 67% | 2238 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,740 psi | 66% | 2257 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,976 psi | 73% | 2280 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,223 psi | 44% | 1325 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,774 psi | 76% | 2313 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 42,786 psi | 71% | 2287 fps | 95.2% |
| ReloadSwiss RS 52 | 37.8 gr | 80% | 35,795 psi | 59% | 2251 fps | 96.6% |
| ReloadSwiss RS 60 | 38.4 gr | 80% | 29,660 psi | 49% | 2136 fps | 97.6% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 35,346 psi | 59% | 2257 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 38,754 psi | 64% | 2313 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 41,727 psi | 69% | 2231 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,318 psi | 60% | 2152 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 29,617 psi | 49% | 2070 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 96% | 47,935 psi | 80% | 2359 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 40,480 psi | 67% | 2251 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,173 psi | 62% | 2215 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 34,418 psi | 57% | 2136 fps | 98% |
| Shooters World SW4350 | <<locked>> | 96% | 43,250 psi | 72% | 2316 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,443 psi | 80% | 2329 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,806 psi | 51% | 2113 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,602 psi | 81% | 2313 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,479 psi | 64% | 2211 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,362 psi | 62% | 2205 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,726 psi | 66% | 2159 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,677 psi | 54% | 2047 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 45,600 psi | 76% | 2293 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 43,743 psi | 73% | 2310 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 39,247 psi | 65% | 2162 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,377 psi | 64% | 2215 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 30,763 psi | 51% | 2080 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 26,672 psi | 44% | 2057 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 45,063 psi | 75% | 2218 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,900 psi | 66% | 2159 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,230 psi | 59% | 2142 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,071 psi | 60% | 2149 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,124 psi | 48% | 2028 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 90% | 35,462 psi | 59% | 2198 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 40,756 psi | 68% | 2238 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 34,650 psi | 58% | 2139 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 92% | 36,999 psi | 61% | 2247 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 98% | 32,300 psi | 54% | 2221 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,689 psi | 49% | 2047 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 39,697 psi | 66% | 2274 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 44,063 psi | 73% | 2385 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,521 psi | 61% | 2208 fps | 97.9% |
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 103 powders for .308 Win. Ackley Improved loaded with the .31 | 200gr | Lapua D166. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,575 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,575 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 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 200.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .308 Win. Ackley Improved with the .31 | 200gr | Lapua D166 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.