Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 180gr | Barnes X S bullet and 88 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 52 and Hodgdon CFE223.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 51,358 psi | 85% | 2431 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,128 psi | 90% | 2543 fps | 98.5% |
| Accurate 2460 | <<locked>> | 86% | 53,026 psi | 88% | 2493 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 52,330 psi | 87% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,751 psi | 89% | 2543 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 51,517 psi | 86% | 2523 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,888 psi | 71% | 2461 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 84% | 54,230 psi | 90% | 2418 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 51,764 psi | 86% | 2398 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 53,055 psi | 88% | 2543 fps | 99% |
| ADI AR 2208 | <<locked>> | 98% | 53,316 psi | 89% | 2530 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 82% | 51,111 psi | 85% | 2487 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,417 psi | 87% | 2507 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 90% | 51,372 psi | 85% | 2497 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,534 psi | 89% | 2595 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 51,634 psi | 86% | 2621 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 52,591 psi | 87% | 2556 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,462 psi | 90% | 2480 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,534 psi | 89% | 2572 fps | 98.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,439 psi | 72% | 2457 fps | 95.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,414 psi | 82% | 2595 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,185 psi | 88% | 2421 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 51,895 psi | 86% | 2546 fps | 97.9% |
| Bofors RP3 | <<locked>> | 98% | 53,127 psi | 88% | 2572 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 51,663 psi | 86% | 2451 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,114 psi | 90% | 2579 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,025 psi | 86% | 2608 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 86% | 52,953 psi | 88% | 2510 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,824 psi | 89% | 2533 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 51,198 psi | 85% | 2526 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 92% | 53,534 psi | 89% | 2556 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,147 psi | 67% | 2365 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 51,271 psi | 85% | 2575 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,867 psi | 58% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,462 psi | 90% | 2552 fps | 99.4% |
| IMR 3031 | <<locked>> | 92% | 52,054 psi | 86% | 2546 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,214 psi | 88% | 2520 fps | 98.6% |
| IMR 4198 | <<locked>> | 86% | 54,259 psi | 90% | 2438 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 51,880 psi | 86% | 2562 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 90% | 52,417 psi | 87% | 2507 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 86% | 53,069 psi | 88% | 2503 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 92% | 51,924 psi | 86% | 2530 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,621 psi | 89% | 2480 fps | 99% |
| Lovex S062 | <<locked>> | 96% | 52,837 psi | 88% | 2526 fps | 99.6% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,718 psi | 81% | 2457 fps | 95.6% |
| Norma 201 | <<locked>> | 92% | 52,373 psi | 87% | 2503 fps | 99.6% |
| Norma 202 | <<locked>> | 92% | 52,054 psi | 86% | 2507 fps | 100% |
| Norma 203B | <<locked>> | 96% | 52,605 psi | 87% | 2562 fps | 99% |
| Norma URPᴾ | <<locked>> | 100% | 43,381 psi | 72% | 2454 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 96% | 52,736 psi | 88% | 2582 fps | 98.8% |
| Ramshot TAC | <<locked>> | 90% | 52,910 psi | 88% | 2513 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 51,634 psi | 86% | 2533 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,751 psi | 89% | 2507 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,288 psi | 59% | 1542 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 52,344 psi | 87% | 2500 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 52,779 psi | 88% | 2628 fps | 98.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,678 psi | 88% | 2657 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 54,041 psi | 90% | 2497 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 52,765 psi | 88% | 2500 fps | 99.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,634 psi | 87% | 2556 fps | 99.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,718 psi | 81% | 2457 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,924 psi | 86% | 2530 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,837 psi | 88% | 2526 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 52,344 psi | 87% | 2467 fps | 99.3% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,706 psi | 86% | 2497 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,925 psi | 90% | 2608 fps | 99% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 51,967 psi | 86% | 2454 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,288 psi | 90% | 2536 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,433 psi | 90% | 2562 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,360 psi | 90% | 2454 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,258 psi | 88% | 2448 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,650 psi | 89% | 2543 fps | 99.8% |
| Somchem S335 | <<locked>> | 92% | 53,388 psi | 89% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,142 psi | 88% | 2530 fps | 98.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,287 psi | 89% | 2556 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,812 psi | 64% | 2408 fps | 98% |
| Vihtavuori N130 | <<locked>> | 88% | 54,186 psi | 90% | 2431 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,940 psi | 90% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,969 psi | 90% | 2510 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,359 psi | 87% | 2487 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,372 psi | 85% | 2497 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,687 psi | 76% | 2454 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 90% | 52,750 psi | 88% | 2503 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 96% | 53,577 psi | 89% | 2526 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,454 psi | 74% | 2457 fps | 95.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,775 psi | 78% | 2441 fps | 98.3% |
| Winchester 748 | <<locked>> | 90% | 51,285 psi | 85% | 2546 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,795 psi | 89% | 2569 fps | 99.4% |
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% | 41,017 psi | 68% | 2280 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,836 psi | 84% | 2493 fps | 98% |
| Accurate 2460 | <<locked>> | 80% | 44,208 psi | 73% | 2365 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 34,360 psi | 57% | 2211 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,189 psi | 65% | 2320 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 32,416 psi | 54% | 2192 fps | 98.5% |
| Accurate 4350 | <<locked>> | 98% | 40,161 psi | 67% | 2411 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 48,298 psi | 80% | 2339 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,646 psi | 81% | 2352 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 37,318 psi | 62% | 2274 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 86% | 37,913 psi | 63% | 2270 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 48,022 psi | 80% | 2444 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,059 psi | 65% | 2287 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 37,869 psi | 63% | 2300 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,657 psi | 74% | 2454 fps | 98.3% |
| Alliant Power Pro 2000-MR | 40.2 gr | 86% | 40,379 psi | 67% | 2418 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,895 psi | 55% | 2208 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,803 psi | 76% | 2362 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 37,768 psi | 63% | 2303 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,278 psi | 69% | 2415 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,521 psi | 61% | 2346 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,094 psi | 78% | 2339 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,712 psi | 68% | 2359 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 32,532 psi | 54% | 2211 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,307 psi | 69% | 2287 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,101 psi | 62% | 2300 fps | 97.7% |
| Hodgdon CFE223 | 38.3 gr | 80% | 40,335 psi | 67% | 2405 fps | 96% |
| Hodgdon H322 | <<locked>> | 80% | 44,092 psi | 73% | 2382 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,614 psi | 74% | 2402 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 42,902 psi | 71% | 2392 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 37,536 psi | 62% | 2283 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,810 psi | 59% | 2277 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,649 psi | 56% | 2247 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 43% | 1342 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,027 psi | 60% | 2241 fps | 95.9% |
| IMR 3031 | <<locked>> | 80% | 36,085 psi | 60% | 2293 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 37,608 psi | 62% | 2257 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 46,108 psi | 77% | 2326 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 36,274 psi | 60% | 2287 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 39,059 psi | 65% | 2287 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 80% | 43,961 psi | 73% | 2365 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 35,795 psi | 59% | 2264 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 38,261 psi | 64% | 2224 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 33,620 psi | 56% | 2185 fps | 96.1% |
| Lovex S065 | <<locked>> | 98% | 46,166 psi | 77% | 2418 fps | 95% |
| Norma 201 | <<locked>> | 80% | 37,028 psi | 62% | 2241 fps | 97.1% |
| Norma 202 | <<locked>> | 80% | 36,564 psi | 61% | 2254 fps | 99% |
| Norma 203B | <<locked>> | 82% | 34,969 psi | 58% | 2251 fps | 95% |
| Norma URP | <<locked>> | 98% | 40,828 psi | 68% | 2405 fps | 95% |
| Ramshot Big Game | <<locked>> | 84% | 36,492 psi | 61% | 2297 fps | 95% |
| Ramshot TAC | <<locked>> | 86% | 46,847 psi | 78% | 2418 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,811 psi | 63% | 2297 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,337 psi | 70% | 2326 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,426 psi | 44% | 1378 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,627 psi | 72% | 2365 fps | 99.4% |
| ReloadSwiss RS 52 | 38.1 gr | 84% | 38,682 psi | 64% | 2382 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 30,603 psi | 51% | 2208 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 41,292 psi | 69% | 2297 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 35,404 psi | 59% | 2198 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 84% | 32,634 psi | 54% | 2205 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 98% | 46,166 psi | 77% | 2418 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,795 psi | 59% | 2264 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 33,620 psi | 56% | 2185 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,006 psi | 76% | 2372 fps | 98.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,370 psi | 80% | 2448 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,768 psi | 63% | 2333 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,079 psi | 77% | 2372 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,889 psi | 75% | 2395 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,897 psi | 60% | 2244 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,493 psi | 64% | 2211 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,589 psi | 52% | 2096 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 41,698 psi | 69% | 2356 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 37,971 psi | 63% | 2218 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 36,521 psi | 61% | 2251 fps | 95.3% |
| Somchem S355 | <<locked>> | 84% | 33,779 psi | 56% | 2215 fps | 95.2% |
| Somchem S365 | <<locked>> | 92% | 31,154 psi | 52% | 2231 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 43,308 psi | 72% | 2280 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,261 psi | 64% | 2215 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,823 psi | 56% | 2198 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 34,534 psi | 57% | 2198 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 30,139 psi | 50% | 2116 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 98% | 42,946 psi | 71% | 2405 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 39,001 psi | 65% | 2280 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 80% | 33,460 psi | 56% | 2192 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 98% | 41,858 psi | 70% | 2411 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,608 psi | 61% | 2257 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 37,507 psi | 62% | 2313 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,795 psi | 58% | 2244 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 88 powders for .308 Win. Ackley Improved loaded with the .308 | 180gr | Barnes X S. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,657 fps; across all powders the maximum-charge window runs from 1,506 fps to 2,657 fps. Accurate 4350 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:12.0 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 52, Hodgdon CFE223 rank at the top here: for .308 Win. Ackley Improved with the .308 | 180gr | Barnes X S 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.