Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 150gr | TWENTY-NINE ERTP bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Winchester 748.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 51,735 psi | 86% | 2635 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 53,954 psi | 90% | 2743 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 51,982 psi | 86% | 2769 fps | 96.3% |
| Accurate 2230 | <<locked>> | 86% | 52,185 psi | 87% | 2776 fps | 96.8% |
| Accurate 2460 | <<locked>> | 92% | 52,518 psi | 87% | 2756 fps | 99.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 49,139 psi | 82% | 2740 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 53,200 psi | 88% | 2805 fps | 99.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 45,571 psi | 76% | 2713 fps | 99.5% |
| Accurate LT-30 | <<locked>> | 88% | 52,924 psi | 88% | 2661 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 53,374 psi | 89% | 2677 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 98% | 53,040 psi | 88% | 2802 fps | 97.5% |
| ADI AR 2207 | <<locked>> | 86% | 53,316 psi | 89% | 2690 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 51,547 psi | 86% | 2766 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 52,866 psi | 88% | 2772 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 98% | 53,766 psi | 89% | 2815 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 53,243 psi | 88% | 2867 fps | 98.2% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 52,692 psi | 88% | 2881 fps | 96% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 45,368 psi | 75% | 2703 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 92% | 54,273 psi | 90% | 2762 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 49,937 psi | 83% | 2776 fps | 96.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 51,532 psi | 86% | 2661 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 51,532 psi | 86% | 2657 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 52,504 psi | 87% | 2805 fps | 96.1% |
| Bofors RP3ᴾ | <<locked>> | 100% | 44,889 psi | 75% | 2707 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 94% | 52,402 psi | 87% | 2717 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 98% | 53,795 psi | 89% | 2841 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 94% | 52,518 psi | 87% | 2874 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 92% | 53,388 psi | 89% | 2792 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 50,995 psi | 85% | 2762 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 84% | 51,503 psi | 86% | 2657 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 98% | 53,345 psi | 89% | 2818 fps | 98.1% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 51,285 psi | 85% | 2831 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,199 psi | 55% | 1650 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 51,706 psi | 86% | 2769 fps | 97.7% |
| IMR 3031ᴾ | <<locked>> | 100% | 54,302 psi | 90% | 2861 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 49,879 psi | 83% | 2720 fps | 96.3% |
| IMR 4198 | <<locked>> | 90% | 52,011 psi | 86% | 2684 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 51,111 psi | 85% | 2812 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 96% | 52,866 psi | 88% | 2772 fps | 98.5% |
| Lovex D073.4 | <<locked>> | 86% | 52,910 psi | 88% | 2772 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 92% | 52,678 psi | 88% | 2762 fps | 99.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 54,070 psi | 90% | 2831 fps | 99.7% |
| Lovex S053 | <<locked>> | 82% | 53,461 psi | 89% | 2592 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 54,447 psi | 90% | 2743 fps | 97.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 48,660 psi | 81% | 2723 fps | 98% |
| Norma 200 | <<locked>> | 86% | 51,184 psi | 85% | 2694 fps | 100% |
| Norma 201 | <<locked>> | 98% | 51,561 psi | 86% | 2753 fps | 98.4% |
| Norma 202 | <<locked>> | 98% | 51,430 psi | 85% | 2769 fps | 99.8% |
| Norma 203Bᴾ | <<locked>> | 100% | 49,008 psi | 81% | 2766 fps | 96.8% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 49,516 psi | 82% | 2779 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 96% | 51,866 psi | 86% | 2792 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 92% | 51,227 psi | 85% | 2720 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,272 psi | 55% | 1690 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 52,997 psi | 88% | 2772 fps | 99.4% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 52,257 psi | 87% | 2881 fps | 96.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 43,700 psi | 73% | 2740 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 96% | 52,736 psi | 88% | 2753 fps | 99.7% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 51,576 psi | 86% | 2743 fps | 98.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 41,887 psi | 70% | 2644 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 86% | 52,910 psi | 88% | 2772 fps | 99.5% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 54,070 psi | 90% | 2831 fps | 99.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 48,660 psi | 81% | 2723 fps | 98% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 53,505 psi | 89% | 2736 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 54,186 psi | 90% | 2448 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 52,243 psi | 87% | 2776 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 51,909 psi | 86% | 2730 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 51,227 psi | 85% | 2769 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 51,561 psi | 86% | 2677 fps | 99.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 47,079 psi | 78% | 2621 fps | 99.8% |
| Somchem S321 | <<locked>> | 94% | 54,041 psi | 90% | 2812 fps | 98.9% |
| Somchem S335 | <<locked>> | 98% | 53,156 psi | 88% | 2720 fps | 100% |
| Somchem S341 | <<locked>> | 98% | 53,708 psi | 89% | 2789 fps | 97.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 43,395 psi | 72% | 2654 fps | 96% |
| Vihtavuori N120 | <<locked>> | 86% | 53,287 psi | 89% | 2641 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 54,447 psi | 90% | 2707 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 54,273 psi | 90% | 2717 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 49,603 psi | 82% | 2733 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 52,112 psi | 87% | 2749 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 41,771 psi | 69% | 2595 fps | 97% |
| Vihtavuori N530 | <<locked>> | 96% | 53,229 psi | 88% | 2769 fps | 98.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 50,111 psi | 83% | 2740 fps | 99.6% |
| Winchester 748 | <<locked>> | 96% | 51,416 psi | 85% | 2812 fps | 99% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 53,940 psi | 90% | 2828 fps | 98.1% |
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% | 48,602 psi | 81% | 2592 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 32,866 psi | 55% | 2379 fps | 98.8% |
| Accurate 2200 | <<locked>> | 84% | 48,762 psi | 81% | 2717 fps | 95.6% |
| Accurate 2230 | <<locked>> | 82% | 45,455 psi | 76% | 2664 fps | 95.3% |
| Accurate 2460 | <<locked>> | 80% | 35,012 psi | 58% | 2448 fps | 96.9% |
| Accurate 2495 | <<locked>> | 80% | 25,150 psi | 42% | 2251 fps | 96.8% |
| Accurate 2520 | <<locked>> | 82% | 32,706 psi | 54% | 2434 fps | 95.6% |
| Accurate 4064 | <<locked>> | 86% | 29,051 psi | 48% | 2369 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 41,481 psi | 69% | 2477 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 80% | 41,843 psi | 70% | 2487 fps | 98% |
| ADI AR 2206H | <<locked>> | 92% | 43,700 psi | 73% | 2644 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 44,498 psi | 74% | 2562 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 39,407 psi | 65% | 2559 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 86% | 38,493 psi | 64% | 2516 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 29,863 psi | 50% | 2392 fps | 99.8% |
| Alliant Power Pro 1200-R | 37.9 gr | 84% | 41,031 psi | 68% | 2648 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 49,066 psi | 82% | 2818 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 39,929 psi | 66% | 2602 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,637 psi | 63% | 2490 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 98% | 46,876 psi | 78% | 2723 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 45,397 psi | 75% | 2569 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,871 psi | 66% | 2467 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 49,429 psi | 82% | 2753 fps | 95.4% |
| Bofors RP3 | <<locked>> | 96% | 39,291 psi | 65% | 2602 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 36,608 psi | 61% | 2431 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 86% | 35,897 psi | 60% | 2523 fps | 95.4% |
| Hodgdon CFE223 | 44.3 gr | 90% | 45,774 psi | 76% | 2756 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 36,085 psi | 60% | 2490 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 80% | 36,434 psi | 61% | 2500 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 80% | 45,716 psi | 76% | 2566 fps | 99.5% |
| Hodgdon H4895 | <<locked>> | 90% | 41,263 psi | 69% | 2608 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 39,566 psi | 66% | 2615 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,642 psi | 41% | 1476 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 42,801 psi | 71% | 2615 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 28,645 psi | 48% | 2365 fps | 96.8% |
| IMR 4064 | <<locked>> | 98% | 47,181 psi | 78% | 2674 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 38,899 psi | 65% | 2474 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 41,959 psi | 70% | 2651 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 86% | 38,493 psi | 64% | 2516 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 42,859 psi | 71% | 2608 fps | 98.1% |
| Lovex D073.5 | <<locked>> | 80% | 34,954 psi | 58% | 2448 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 84% | 31,459 psi | 52% | 2418 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 50,517 psi | 84% | 2552 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 42,670 psi | 71% | 2546 fps | 95.1% |
| Lovex S062 | <<locked>> | 92% | 38,101 psi | 63% | 2530 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 42,293 psi | 70% | 2556 fps | 100% |
| Norma 201 | <<locked>> | 88% | 37,898 psi | 63% | 2507 fps | 95.3% |
| Norma 202 | <<locked>> | 82% | 31,053 psi | 52% | 2375 fps | 95.8% |
| Norma 203B | <<locked>> | 96% | 43,178 psi | 72% | 2661 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 98% | 46,224 psi | 77% | 2723 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 92% | 45,498 psi | 76% | 2687 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 88% | 45,121 psi | 75% | 2618 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,569 psi | 41% | 1509 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,795 psi | 59% | 2461 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 45,963 psi | 76% | 2772 fps | 95.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 35,897 psi | 60% | 2562 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 32,779 psi | 54% | 2375 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 90% | 38,159 psi | 63% | 2503 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 98% | 39,189 psi | 65% | 2589 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 42,859 psi | 71% | 2608 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 31,459 psi | 52% | 2418 fps | 95.1% |
| Shooters World Precision | <<locked>> | 92% | 38,101 psi | 63% | 2530 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 40,582 psi | 67% | 2520 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 46,050 psi | 77% | 2343 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 39,972 psi | 66% | 2566 fps | 98.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 38,189 psi | 63% | 2497 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 45,020 psi | 75% | 2664 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,560 psi | 52% | 2303 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 27,035 psi | 45% | 2208 fps | 95.2% |
| Somchem S321 | <<locked>> | 84% | 38,450 psi | 64% | 2539 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 30,734 psi | 51% | 2303 fps | 96.5% |
| Somchem S341 | <<locked>> | 92% | 43,903 psi | 73% | 2631 fps | 95.2% |
| Somchem S355 | <<locked>> | 98% | 40,712 psi | 68% | 2602 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 44,570 psi | 74% | 2520 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 35,940 psi | 60% | 2405 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 31,343 psi | 52% | 2320 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 80% | 26,368 psi | 44% | 2270 fps | 97.1% |
| Vihtavuori N140 | <<locked>> | 82% | 29,414 psi | 49% | 2316 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 96% | 36,695 psi | 61% | 2497 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 86% | 38,566 psi | 64% | 2513 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 84% | 30,182 psi | 50% | 2349 fps | 95.1% |
| Winchester 748 | 39.7 gr | 84% | 34,534 psi | 57% | 2490 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 92% | 41,307 psi | 69% | 2618 fps | 95.4% |
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 83 powders for .308 Win. Ackley Improved loaded with the .308 | 150gr | TWENTY-NINE ERTP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,881 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,881 fps. Accurate 2495 gives the best case fill at 100 %, and 83 of the 83 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 150.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant Power Pro 2000-MR 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, Alliant Power Pro 1200-R, Winchester 748 rank at the top here: for .308 Win. Ackley Improved with the .308 | 150gr | TWENTY-NINE ERTP 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.