Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 146.6gr | Sax KDG-S bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Winchester 748 and Accurate 2520.
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 1680 | <<locked>> | 84% | 54,331 psi | 90% | 2717 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 52,417 psi | 87% | 2769 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 51,213 psi | 85% | 2802 fps | 96.1% |
| Accurate 2230 | <<locked>> | 86% | 51,068 psi | 85% | 2805 fps | 96.5% |
| Accurate 2460 | <<locked>> | 92% | 51,039 psi | 85% | 2782 fps | 99.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 47,268 psi | 79% | 2759 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 52,083 psi | 87% | 2838 fps | 99.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,801 psi | 73% | 2730 fps | 99.3% |
| Accurate LT-30 | <<locked>> | 88% | 52,054 psi | 86% | 2694 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 52,504 psi | 87% | 2710 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 98% | 51,793 psi | 86% | 2828 fps | 97.2% |
| ADI AR 2207 | <<locked>> | 86% | 52,330 psi | 87% | 2723 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 54,447 psi | 90% | 2851 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 51,793 psi | 86% | 2802 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 98% | 52,620 psi | 87% | 2844 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 52,214 psi | 87% | 2897 fps | 98% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 44,440 psi | 74% | 2730 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 92% | 52,939 psi | 88% | 2789 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 48,704 psi | 81% | 2799 fps | 96% |
| Alliant Reloder-7 | <<locked>> | 86% | 53,708 psi | 89% | 2740 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 54,056 psi | 90% | 2736 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 51,532 psi | 86% | 2831 fps | 95.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 43,714 psi | 73% | 2730 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 94% | 51,488 psi | 86% | 2749 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 98% | 52,692 psi | 88% | 2871 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 94% | 51,648 psi | 86% | 2904 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 92% | 52,475 psi | 87% | 2825 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 53,563 psi | 89% | 2844 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 86% | 54,012 psi | 90% | 2740 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 52,156 psi | 87% | 2844 fps | 97.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 50,285 psi | 84% | 2861 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,808 psi | 55% | 1677 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 54,317 psi | 90% | 2854 fps | 98% |
| IMR 3031ᴾ | <<locked>> | 100% | 53,476 psi | 89% | 2897 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 49,182 psi | 82% | 2753 fps | 96% |
| IMR 4198 | <<locked>> | 92% | 54,230 psi | 90% | 2759 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 53,838 psi | 89% | 2684 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 49,806 psi | 83% | 2835 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 96% | 51,793 psi | 86% | 2802 fps | 98.3% |
| Lovex D073.4 | <<locked>> | 86% | 51,735 psi | 86% | 2802 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 92% | 51,242 psi | 85% | 2789 fps | 98.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 52,910 psi | 88% | 2861 fps | 99.6% |
| Lovex S053 | <<locked>> | 82% | 52,489 psi | 87% | 2628 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 53,490 psi | 89% | 2772 fps | 97.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 47,747 psi | 79% | 2753 fps | 97.8% |
| Norma 200 | <<locked>> | 88% | 52,982 psi | 88% | 2769 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 53,505 psi | 89% | 2828 fps | 98.6% |
| Norma 202ᴾ | <<locked>> | 100% | 53,925 psi | 90% | 2851 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 47,703 psi | 79% | 2789 fps | 96.4% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 48,443 psi | 80% | 2805 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 96% | 50,923 psi | 85% | 2822 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 94% | 53,954 psi | 90% | 2805 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,779 psi | 54% | 1716 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 54,085 psi | 90% | 2723 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 51,982 psi | 86% | 2802 fps | 99.3% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 51,300 psi | 85% | 2910 fps | 96.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 42,743 psi | 71% | 2766 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 98% | 54,288 psi | 90% | 2825 fps | 99.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 50,618 psi | 84% | 2776 fps | 98.2% |
| Shooters World AR Plus | <<locked>> | 86% | 51,735 psi | 86% | 2802 fps | 99.3% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 52,910 psi | 88% | 2861 fps | 99.6% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 47,747 psi | 79% | 2753 fps | 97.8% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 52,402 psi | 87% | 2766 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 53,040 psi | 88% | 2477 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 51,242 psi | 85% | 2805 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 54,244 psi | 90% | 2808 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 53,592 psi | 89% | 2851 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 53,606 psi | 89% | 2749 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 46,108 psi | 77% | 2648 fps | 99.7% |
| Somchem S321 | <<locked>> | 94% | 52,634 psi | 87% | 2835 fps | 98.7% |
| Somchem S335 | <<locked>> | 98% | 51,953 psi | 86% | 2749 fps | 99.9% |
| Somchem S341 | <<locked>> | 98% | 52,692 psi | 88% | 2818 fps | 97.1% |
| Vihtavuori N120 | <<locked>> | 86% | 52,388 psi | 87% | 2674 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 53,606 psi | 89% | 2740 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 52,997 psi | 88% | 2746 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 48,399 psi | 80% | 2762 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,908 psi | 85% | 2776 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,582 psi | 67% | 2615 fps | 96.6% |
| Vihtavuori N530 | <<locked>> | 96% | 52,141 psi | 87% | 2799 fps | 98.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 49,153 psi | 82% | 2769 fps | 99.5% |
| Winchester 748 | <<locked>> | 98% | 53,882 psi | 90% | 2894 fps | 99.3% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 52,837 psi | 88% | 2858 fps | 97.9% |
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% | 47,659 psi | 79% | 2621 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,531 psi | 52% | 2392 fps | 98.4% |
| Accurate 2200 | <<locked>> | 84% | 47,674 psi | 79% | 2743 fps | 95.2% |
| Accurate 2230 | <<locked>> | 84% | 47,471 psi | 79% | 2743 fps | 95.7% |
| Accurate 2460 | <<locked>> | 80% | 33,707 psi | 56% | 2464 fps | 96.3% |
| Accurate 2495 | <<locked>> | 80% | 23,656 psi | 39% | 2251 fps | 95.9% |
| Accurate 2520 | 39.9 gr | 82% | 31,691 psi | 53% | 2454 fps | 95.1% |
| Accurate 4064 | <<locked>> | 88% | 29,457 psi | 49% | 2425 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 40,509 psi | 67% | 2503 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 80% | 40,886 psi | 68% | 2510 fps | 97.8% |
| ADI AR 2206H | <<locked>> | 92% | 42,699 psi | 71% | 2671 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 43,381 psi | 72% | 2592 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 38,450 psi | 64% | 2585 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 37,681 psi | 63% | 2543 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 28,950 psi | 48% | 2411 fps | 99.6% |
| Alliant Power Pro 1200-R | 38.7 gr | 84% | 39,885 psi | 66% | 2671 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 38,841 psi | 65% | 2621 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,405 psi | 60% | 2510 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 98% | 45,701 psi | 76% | 2746 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 44,469 psi | 74% | 2602 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,943 psi | 65% | 2493 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 48,138 psi | 80% | 2779 fps | 95% |
| Bofors RP3 | <<locked>> | 98% | 40,915 psi | 68% | 2677 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,447 psi | 59% | 2448 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 88% | 37,188 psi | 62% | 2595 fps | 95.7% |
| Hodgdon CFE223 | <<locked>> | 92% | 48,196 psi | 80% | 2844 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 35,215 psi | 59% | 2513 fps | 98% |
| Hodgdon H335 | <<locked>> | 80% | 35,375 psi | 59% | 2520 fps | 97.1% |
| Hodgdon H4198 | <<locked>> | 80% | 44,744 psi | 74% | 2595 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 90% | 40,306 psi | 67% | 2631 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 41,220 psi | 68% | 2694 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,149 psi | 40% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 41,945 psi | 70% | 2641 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 27,557 psi | 46% | 2375 fps | 96.2% |
| IMR 4064 | <<locked>> | 98% | 46,166 psi | 77% | 2700 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 38,072 psi | 63% | 2500 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 50,792 psi | 84% | 2641 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 43,845 psi | 73% | 2730 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 86% | 37,681 psi | 63% | 2543 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 41,553 psi | 69% | 2628 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 82% | 36,071 psi | 60% | 2516 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 86% | 32,518 psi | 54% | 2487 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 49,603 psi | 82% | 2589 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 44,570 psi | 74% | 2625 fps | 95.5% |
| Lovex S062 | <<locked>> | 92% | 37,057 psi | 62% | 2549 fps | 95% |
| Norma 200 | <<locked>> | 80% | 41,075 psi | 68% | 2582 fps | 100% |
| Norma 201 | <<locked>> | 90% | 39,001 psi | 65% | 2575 fps | 95.6% |
| Norma 202 | <<locked>> | 82% | 30,023 psi | 50% | 2392 fps | 95.2% |
| Norma 203B | <<locked>> | 98% | 44,744 psi | 74% | 2736 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 98% | 45,252 psi | 75% | 2749 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 92% | 44,382 psi | 74% | 2710 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 44,135 psi | 73% | 2641 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,236 psi | 40% | 1535 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 50,792 psi | 84% | 2677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,824 psi | 58% | 2480 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 48,037 psi | 80% | 2854 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 37,289 psi | 62% | 2641 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 31,285 psi | 52% | 2385 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 92% | 39,247 psi | 65% | 2572 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 41,553 psi | 69% | 2628 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 32,518 psi | 54% | 2487 fps | 95.4% |
| Shooters World Precision | <<locked>> | 92% | 37,057 psi | 62% | 2549 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 39,784 psi | 66% | 2549 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,469 psi | 76% | 2379 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,841 psi | 65% | 2585 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,144 psi | 62% | 2520 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 44,237 psi | 73% | 2694 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,458 psi | 51% | 2320 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,775 psi | 46% | 2270 fps | 95.4% |
| Somchem S321 | <<locked>> | 84% | 37,434 psi | 62% | 2562 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 29,718 psi | 49% | 2323 fps | 96.1% |
| Somchem S341 | <<locked>> | 94% | 45,847 psi | 76% | 2710 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 43,482 psi | 72% | 2549 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,809 psi | 58% | 2425 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 30,298 psi | 50% | 2336 fps | 98% |
| Vihtavuori N135 | <<locked>> | 80% | 25,222 psi | 42% | 2277 fps | 96.4% |
| Vihtavuori N140 | <<locked>> | 84% | 30,313 psi | 50% | 2382 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 96% | 35,607 psi | 59% | 2516 fps | 95% |
| Vihtavuori N530 | <<locked>> | 86% | 37,449 psi | 62% | 2536 fps | 95% |
| Vihtavuori N540 | <<locked>> | 86% | 30,995 psi | 51% | 2411 fps | 95.4% |
| Winchester 748 | 41.5 gr | 86% | 35,882 psi | 60% | 2562 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 40,219 psi | 67% | 2638 fps | 95% |
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 .308 | 146.6gr | Sax KDG-S. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,910 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,910 fps. Accurate 2495 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 54–90 %, leaving at least 10 % headroom. The 146.6 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant Reloder- TS 15.5 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 1200-R, Winchester 748, Accurate 2520 rank at the top here: for .308 Win. Ackley Improved with the .308 | 146.6gr | Sax KDG-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.