Load Specifications
Load data in caliber .308 Win. Ackley Improved with .311 | 174gr | Impala RNFP KO bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Alliant Power Pro 2000-MR 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.
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>> | 90% | 54,172 psi | 90% | 2520 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,838 psi | 89% | 2592 fps | 98.2% |
| Accurate 2460 | <<locked>> | 86% | 52,808 psi | 88% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 51,967 psi | 86% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,650 psi | 89% | 2595 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 54,288 psi | 90% | 2615 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 53,998 psi | 90% | 2467 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,389 psi | 90% | 2487 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 52,750 psi | 88% | 2592 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 98% | 53,258 psi | 88% | 2579 fps | 98.2% |
| ADI AR 2219 | <<locked>> | 84% | 53,925 psi | 90% | 2579 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,170 psi | 87% | 2556 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 92% | 54,201 psi | 90% | 2585 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,461 psi | 89% | 2648 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 51,401 psi | 85% | 2671 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 52,431 psi | 87% | 2605 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,128 psi | 90% | 2530 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,417 psi | 89% | 2625 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,385 psi | 82% | 2648 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 52,982 psi | 88% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 51,721 psi | 86% | 2595 fps | 97.7% |
| Bofors RP3 | <<locked>> | 98% | 52,460 psi | 87% | 2615 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 88% | 51,547 psi | 86% | 2500 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,983 psi | 90% | 2631 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 88% | 51,517 psi | 86% | 2651 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 86% | 52,431 psi | 87% | 2559 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,505 psi | 89% | 2582 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,201 psi | 90% | 2621 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 92% | 53,200 psi | 88% | 2605 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,697 psi | 66% | 2405 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,273 psi | 90% | 2671 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,737 psi | 58% | 1539 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,041 psi | 90% | 2598 fps | 99.2% |
| IMR 3031 | <<locked>> | 92% | 51,764 psi | 86% | 2598 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 52,837 psi | 88% | 2566 fps | 98.4% |
| IMR 4198 | <<locked>> | 86% | 54,172 psi | 90% | 2490 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 51,416 psi | 85% | 2608 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 90% | 52,170 psi | 87% | 2556 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 86% | 52,721 psi | 88% | 2549 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 51,445 psi | 85% | 2575 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,374 psi | 89% | 2530 fps | 98.8% |
| Lovex S062 | <<locked>> | 96% | 52,547 psi | 87% | 2572 fps | 99.5% |
| Norma 201 | <<locked>> | 92% | 52,127 psi | 87% | 2549 fps | 99.5% |
| Norma 202 | <<locked>> | 92% | 51,822 psi | 86% | 2556 fps | 100% |
| Norma 203B | <<locked>> | 96% | 52,489 psi | 87% | 2612 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 96% | 52,417 psi | 87% | 2631 fps | 98.6% |
| Ramshot TAC | <<locked>> | 90% | 52,504 psi | 87% | 2556 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 51,198 psi | 85% | 2579 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,359 psi | 89% | 2552 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,114 psi | 58% | 1578 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 51,866 psi | 86% | 2543 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 52,286 psi | 87% | 2674 fps | 98.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,649 psi | 87% | 2710 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 54,012 psi | 90% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 52,533 psi | 87% | 2546 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,315 psi | 87% | 2605 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,445 psi | 85% | 2575 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,547 psi | 87% | 2572 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 51,750 psi | 86% | 2510 fps | 99.2% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 51,213 psi | 85% | 2543 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,664 psi | 89% | 2654 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 51,372 psi | 85% | 2500 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,070 psi | 90% | 2585 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,882 psi | 90% | 2605 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,882 psi | 90% | 2500 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,026 psi | 88% | 2497 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,272 psi | 89% | 2592 fps | 99.7% |
| Somchem S335 | <<locked>> | 92% | 53,214 psi | 88% | 2507 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 52,895 psi | 88% | 2579 fps | 98.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,055 psi | 88% | 2605 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,609 psi | 64% | 2451 fps | 97.7% |
| Vihtavuori N130 | <<locked>> | 88% | 53,853 psi | 89% | 2477 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,490 psi | 89% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,708 psi | 89% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 51,982 psi | 86% | 2533 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,213 psi | 85% | 2546 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,411 psi | 75% | 2497 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 90% | 52,504 psi | 87% | 2552 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 96% | 53,403 psi | 89% | 2575 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,630 psi | 77% | 2487 fps | 98.1% |
| Winchester 748 | <<locked>> | 90% | 51,256 psi | 85% | 2598 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,592 psi | 89% | 2618 fps | 99.2% |
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% | 40,611 psi | 67% | 2320 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,575 psi | 84% | 2543 fps | 97.7% |
| Accurate 2460 | <<locked>> | 80% | 43,845 psi | 73% | 2408 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 34,200 psi | 57% | 2254 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 38,856 psi | 65% | 2359 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 32,256 psi | 54% | 2234 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 80% | 48,254 psi | 80% | 2388 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,559 psi | 81% | 2405 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 80% | 37,173 psi | 62% | 2316 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 88% | 39,929 psi | 66% | 2356 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 47,659 psi | 79% | 2490 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,870 psi | 65% | 2329 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 80% | 37,391 psi | 62% | 2339 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,353 psi | 74% | 2500 fps | 98% |
| Alliant Power Pro 2000-MR | 42.1 gr | 88% | 42,801 psi | 71% | 2516 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,721 psi | 54% | 2247 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,716 psi | 76% | 2411 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 39,711 psi | 66% | 2392 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,448 psi | 61% | 2392 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,717 psi | 78% | 2385 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,538 psi | 67% | 2405 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 32,271 psi | 54% | 2251 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,886 psi | 68% | 2326 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,767 psi | 61% | 2339 fps | 97.4% |
| Hodgdon CFE223 | 39.1 gr | 80% | 39,929 psi | 66% | 2444 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 43,903 psi | 73% | 2431 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,237 psi | 73% | 2444 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 45,223 psi | 75% | 2480 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 37,333 psi | 62% | 2326 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 37,463 psi | 62% | 2359 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,359 psi | 55% | 2287 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 43% | 1375 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,897 psi | 60% | 2283 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 35,926 psi | 60% | 2336 fps | 99.8% |
| IMR 4064 | <<locked>> | 86% | 39,711 psi | 66% | 2346 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 45,876 psi | 76% | 2375 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 36,013 psi | 60% | 2326 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 38,870 psi | 65% | 2329 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 80% | 43,540 psi | 72% | 2408 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 35,491 psi | 59% | 2303 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 37,869 psi | 63% | 2264 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 33,243 psi | 55% | 2221 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 36,912 psi | 61% | 2283 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 36,434 psi | 61% | 2297 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 36,840 psi | 61% | 2336 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 86% | 38,435 psi | 64% | 2385 fps | 95.4% |
| Ramshot TAC | <<locked>> | 86% | 46,543 psi | 77% | 2461 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,478 psi | 62% | 2336 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,959 psi | 70% | 2365 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,194 psi | 44% | 1407 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,381 psi | 72% | 2408 fps | 99.2% |
| ReloadSwiss RS 52 | 38.9 gr | 84% | 38,305 psi | 64% | 2425 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 30,530 psi | 51% | 2251 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 40,944 psi | 68% | 2339 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 35,302 psi | 59% | 2244 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 34,418 psi | 57% | 2290 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,491 psi | 59% | 2303 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 33,243 psi | 55% | 2221 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,600 psi | 76% | 2415 fps | 98.3% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,921 psi | 80% | 2493 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,594 psi | 62% | 2375 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,643 psi | 76% | 2418 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,599 psi | 74% | 2438 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,739 psi | 63% | 2329 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,087 psi | 63% | 2251 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,314 psi | 52% | 2133 fps | 98.5% |
| Somchem S321 | <<locked>> | 80% | 41,350 psi | 69% | 2398 fps | 98.2% |
| Somchem S335 | <<locked>> | 80% | 37,840 psi | 63% | 2260 fps | 99.5% |
| Somchem S341 | <<locked>> | 82% | 38,609 psi | 64% | 2339 fps | 95.7% |
| Somchem S355 | <<locked>> | 86% | 35,273 psi | 59% | 2293 fps | 95.4% |
| Somchem S365 | <<locked>> | 94% | 32,489 psi | 54% | 2306 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 42,931 psi | 71% | 2323 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,913 psi | 63% | 2257 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,489 psi | 56% | 2241 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 34,389 psi | 57% | 2238 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 82% | 29,892 psi | 50% | 2152 fps | 95% |
| Vihtavuori N160 | <<locked>> | 98% | 42,801 psi | 71% | 2451 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 38,769 psi | 64% | 2323 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 80% | 33,228 psi | 55% | 2231 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,521 psi | 61% | 2297 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 37,449 psi | 62% | 2359 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,534 psi | 57% | 2283 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 82 powders for .308 Win. Ackley Improved loaded with the .311 | 174gr | Impala RNFP KO. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,710 fps; across all powders the maximum-charge window runs from 1,539 fps to 2,710 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 82 of the 82 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 174.0 gr projectile in 0.311" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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. ReloadSwiss RS 52, Alliant Power Pro 2000-MR, Hodgdon CFE223 rank at the top here: for .308 Win. Ackley Improved with the .311 | 174gr | Impala RNFP KO 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.