Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 165gr | Swift Scirocco bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, ReloadSwiss RS 52 and Hodgdon H4895.
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 1680 | <<locked>> | 82% | 54,346 psi | 90% | 2536 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 53,577 psi | 89% | 2598 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 51,547 psi | 86% | 2631 fps | 97.2% |
| Accurate 2230 | <<locked>> | 84% | 51,866 psi | 86% | 2641 fps | 97.6% |
| Accurate 2460 | <<locked>> | 90% | 52,040 psi | 86% | 2618 fps | 99.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 52,576 psi | 87% | 2648 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 53,142 psi | 88% | 2671 fps | 99.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 48,747 psi | 81% | 2631 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 52,127 psi | 87% | 2520 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 52,533 psi | 87% | 2536 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 96% | 52,518 psi | 87% | 2664 fps | 98.2% |
| ADI AR 2207 | <<locked>> | 84% | 52,953 psi | 88% | 2543 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 50,372 psi | 84% | 2608 fps | 97.1% |
| ADI AR 2219 | <<locked>> | 86% | 51,082 psi | 85% | 2621 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 52,214 psi | 87% | 2631 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 96% | 53,751 psi | 89% | 2667 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 53,417 psi | 89% | 2733 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 52,054 psi | 86% | 2749 fps | 97.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 48,689 psi | 81% | 2628 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 90% | 53,954 psi | 90% | 2615 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 53,084 psi | 88% | 2694 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,120 psi | 72% | 2598 fps | 96.5% |
| Alliant Reloder-7 | <<locked>> | 84% | 54,128 psi | 90% | 2559 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 53,896 psi | 90% | 2559 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 52,054 psi | 86% | 2671 fps | 97.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 48,486 psi | 81% | 2638 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 51,808 psi | 86% | 2582 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 96% | 53,795 psi | 89% | 2710 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 92% | 52,069 psi | 87% | 2736 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 90% | 52,968 psi | 88% | 2648 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 54,259 psi | 90% | 2674 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 50,401 psi | 84% | 2638 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 84% | 53,896 psi | 90% | 2559 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 52,924 psi | 88% | 2680 fps | 98.7% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 54,215 psi | 90% | 2746 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,707 psi | 56% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 54,462 psi | 90% | 2680 fps | 98.8% |
| IMR 3031 | <<locked>> | 98% | 54,418 psi | 90% | 2720 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 53,055 psi | 88% | 2641 fps | 97.8% |
| IMR 4198 | <<locked>> | 88% | 51,967 psi | 86% | 2543 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 54,273 psi | 90% | 2726 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 94% | 52,214 psi | 87% | 2631 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 84% | 52,576 psi | 87% | 2631 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 90% | 52,388 psi | 87% | 2628 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 98% | 54,099 psi | 90% | 2697 fps | 99.9% |
| Lovex S060 | <<locked>> | 96% | 53,896 psi | 90% | 2608 fps | 98.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 51,953 psi | 86% | 2644 fps | 99.1% |
| Norma 200 | <<locked>> | 86% | 54,186 psi | 90% | 2595 fps | 100% |
| Norma 201 | <<locked>> | 98% | 54,404 psi | 90% | 2664 fps | 99.3% |
| Norma 202 | <<locked>> | 96% | 51,358 psi | 85% | 2635 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 52,069 psi | 87% | 2684 fps | 98.2% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 52,707 psi | 88% | 2707 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 94% | 51,692 psi | 86% | 2661 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 92% | 54,230 psi | 90% | 2638 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,852 psi | 56% | 1608 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 52,257 psi | 87% | 2628 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 52,243 psi | 87% | 2749 fps | 97.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 46,093 psi | 77% | 2671 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 94% | 52,359 psi | 87% | 2615 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 98% | 51,358 psi | 85% | 2612 fps | 99% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 44,817 psi | 74% | 2572 fps | 97.6% |
| Shooters World AR Plus | <<locked>> | 84% | 52,576 psi | 87% | 2631 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 98% | 54,099 psi | 90% | 2697 fps | 99.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 51,953 psi | 86% | 2644 fps | 99.1% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 52,750 psi | 88% | 2598 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 53,592 psi | 89% | 2306 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 51,634 psi | 86% | 2631 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 47,268 psi | 79% | 2628 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 51,895 psi | 86% | 2589 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 54,201 psi | 90% | 2657 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 54,346 psi | 90% | 2687 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 54,331 psi | 90% | 2582 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 49,980 psi | 83% | 2533 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 53,301 psi | 89% | 2667 fps | 99.4% |
| Somchem S335 | <<locked>> | 96% | 52,852 psi | 88% | 2582 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 53,258 psi | 88% | 2654 fps | 98.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 46,093 psi | 77% | 2575 fps | 97.6% |
| Vihtavuori N120 | <<locked>> | 84% | 52,924 psi | 88% | 2497 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 54,070 psi | 90% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 53,737 psi | 89% | 2575 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,040 psi | 88% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 51,721 psi | 86% | 2612 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 44,498 psi | 74% | 2520 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 94% | 53,011 psi | 88% | 2635 fps | 99.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 53,214 psi | 88% | 2651 fps | 100% |
| Winchester 748 | <<locked>> | 94% | 51,213 psi | 85% | 2674 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 98% | 53,505 psi | 89% | 2694 fps | 98.8% |
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 1680 | <<locked>> | 80% | 50,966 psi | 85% | 2493 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,795 psi | 58% | 2300 fps | 99.6% |
| Accurate 2200 | <<locked>> | 80% | 45,179 psi | 75% | 2526 fps | 95.8% |
| Accurate 2230 | <<locked>> | 80% | 45,063 psi | 75% | 2533 fps | 96.3% |
| Accurate 2460 | <<locked>> | 80% | 37,376 psi | 62% | 2375 fps | 98.3% |
| Accurate 2495 | <<locked>> | 80% | 27,282 psi | 45% | 2195 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 32,880 psi | 55% | 2323 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 25,875 psi | 43% | 2169 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 43,308 psi | 72% | 2385 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 80% | 43,685 psi | 73% | 2398 fps | 99% |
| ADI AR 2206H | <<locked>> | 86% | 38,551 psi | 64% | 2425 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 46,717 psi | 78% | 2461 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 41,959 psi | 70% | 2467 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 41,800 psi | 69% | 2477 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 35,926 psi | 60% | 2346 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 31,966 psi | 53% | 2320 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 38,276 psi | 64% | 2467 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 45,513 psi | 76% | 2635 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 35,389 psi | 59% | 2388 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,682 psi | 66% | 2398 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 41,031 psi | 68% | 2493 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 40,495 psi | 67% | 2546 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,950 psi | 80% | 2474 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,829 psi | 69% | 2382 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 45,585 psi | 76% | 2569 fps | 95.6% |
| Bofors RP3 | <<locked>> | 90% | 34,577 psi | 57% | 2385 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,172 psi | 60% | 2306 fps | 96.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 33,460 psi | 56% | 2349 fps | 95.6% |
| Hodgdon CFE223 | 41.4 gr | 86% | 42,424 psi | 70% | 2569 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 38,261 psi | 64% | 2411 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 38,812 psi | 64% | 2428 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 98% | 47,210 psi | 78% | 2589 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 47,732 psi | 79% | 2470 fps | 99.9% |
| Hodgdon H4895 | 37.1 gr | 84% | 36,332 psi | 60% | 2385 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 36,883 psi | 61% | 2441 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,889 psi | 41% | 1398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 37,666 psi | 63% | 2395 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 30,429 psi | 51% | 2297 fps | 98.4% |
| IMR 4064 | <<locked>> | 92% | 41,249 psi | 69% | 2448 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 41,002 psi | 68% | 2382 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 39,595 psi | 66% | 2480 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 82% | 35,926 psi | 60% | 2346 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 45,701 psi | 76% | 2530 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 37,072 psi | 62% | 2372 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 80% | 29,428 psi | 49% | 2251 fps | 95.4% |
| Lovex S060 | <<locked>> | 86% | 40,059 psi | 67% | 2379 fps | 95.5% |
| Lovex S062 | <<locked>> | 86% | 33,837 psi | 56% | 2320 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 45,005 psi | 75% | 2467 fps | 100% |
| Norma 201 | <<locked>> | 84% | 35,462 psi | 59% | 2336 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 31,140 psi | 52% | 2264 fps | 96.9% |
| Norma 203B | <<locked>> | 90% | 38,014 psi | 63% | 2441 fps | 95% |
| Ramshot Big Game | <<locked>> | 92% | 40,408 psi | 67% | 2497 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 39,552 psi | 66% | 2454 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,392 psi | 65% | 2392 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,874 psi | 41% | 1430 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,898 psi | 63% | 2385 fps | 97.7% |
| ReloadSwiss RS 52 | 42 gr | 92% | 42,873 psi | 71% | 2592 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 33,475 psi | 56% | 2398 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 34,853 psi | 58% | 2306 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 33,779 psi | 56% | 2293 fps | 95% |
| Rottweil R 903 | <<locked>> | 94% | 36,927 psi | 61% | 2425 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 45,701 psi | 76% | 2530 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,428 psi | 49% | 2251 fps | 95.4% |
| Shooters World Precision | <<locked>> | 86% | 33,837 psi | 56% | 2320 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,118 psi | 67% | 2395 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,124 psi | 80% | 2241 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,424 psi | 70% | 2484 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 41,713 psi | 69% | 2530 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,306 psi | 67% | 2408 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 47,210 psi | 78% | 2556 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 39,363 psi | 65% | 2441 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,185 psi | 55% | 2231 fps | 97.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,890 psi | 45% | 2100 fps | 96.3% |
| Somchem S321 | <<locked>> | 80% | 35,679 psi | 59% | 2365 fps | 96% |
| Somchem S335 | <<locked>> | 80% | 32,663 psi | 54% | 2238 fps | 98.1% |
| Somchem S341 | <<locked>> | 88% | 40,683 psi | 68% | 2454 fps | 95.5% |
| Somchem S355 | <<locked>> | 94% | 38,232 psi | 64% | 2434 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 46,760 psi | 78% | 2415 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,768 psi | 63% | 2320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,054 psi | 55% | 2241 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 80% | 28,036 psi | 47% | 2201 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 80% | 29,428 psi | 49% | 2205 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 90% | 32,184 psi | 53% | 2287 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 82% | 35,723 psi | 59% | 2339 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 28,123 psi | 47% | 2185 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 32,198 psi | 53% | 2320 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 88% | 38,522 psi | 64% | 2444 fps | 95.7% |
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 104 powders for .308 Win. Ackley Improved loaded with the .308 | 165gr | Swift Scirocco. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,568 fps to 2,749 fps. Accurate 2495 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Accurate 4350 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, ReloadSwiss RS 52, Hodgdon H4895 rank at the top here: for .308 Win. Ackley Improved with the .308 | 165gr | Swift Scirocco they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 4350, Alliant Reloder-16 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.