Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 90gr | Impala LWHV LS bullet and 33 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, ADI AR 2207 and Hodgdon H322.
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>> | 88% | 53,925 psi | 90% | 3409 fps | 99.6% |
| Accurate 2015ᴾ | <<locked>> | 100% | 50,256 psi | 83% | 3425 fps | 98.6% |
| Accurate 2460 | <<locked>> | 98% | 52,866 psi | 88% | 3478 fps | 96.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,639 psi | 66% | 3271 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 94% | 53,940 psi | 90% | 3402 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 94% | 54,447 psi | 90% | 3409 fps | 96.1% |
| ADI AR 2207 | <<locked>> | 92% | 53,243 psi | 88% | 3484 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,764 psi | 86% | 3507 fps | 97.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,195 psi | 77% | 3455 fps | 99.7% |
| Alliant Reloder-10x | <<locked>> | 98% | 53,940 psi | 90% | 3530 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 90% | 52,489 psi | 87% | 3438 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 52,475 psi | 87% | 3379 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 98% | 53,069 psi | 88% | 3530 fps | 97.6% |
| Hodgdon H335 | <<locked>> | 96% | 51,155 psi | 85% | 3484 fps | 96.2% |
| Hodgdon H4198 | <<locked>> | 90% | 52,765 psi | 88% | 3409 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,111 psi | 53% | 2175 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,845 psi | 73% | 3406 fps | 96.5% |
| IMR 4198 | <<locked>> | 96% | 51,953 psi | 86% | 3455 fps | 99.9% |
| IMR 4227 | <<locked>> | 86% | 52,533 psi | 87% | 3396 fps | 100% |
| Lovex S053 | <<locked>> | 88% | 54,288 psi | 90% | 3396 fps | 100% |
| Norma 200 | <<locked>> | 92% | 51,837 psi | 86% | 3468 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,184 psi | 53% | 2228 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,634 psi | 87% | 3435 fps | 100% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 50,270 psi | 84% | 3425 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 52,214 psi | 87% | 3186 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 52,402 psi | 87% | 3504 fps | 96.4% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,300 psi | 85% | 3471 fps | 98.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,485 psi | 79% | 3323 fps | 96.3% |
| Vihtavuori N110 | <<locked>> | 82% | 53,505 psi | 89% | 3301 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 53,214 psi | 88% | 3428 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 51,576 psi | 86% | 3409 fps | 99.3% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,616 psi | 79% | 3337 fps | 98% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,103 psi | 67% | 3271 fps | 96.7% |
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% | 41,756 psi | 69% | 3166 fps | 97.9% |
| Accurate 2015 | <<locked>> | 90% | 37,463 psi | 62% | 3146 fps | 95.6% |
| Accurate 2460 | <<locked>> | 96% | 49,443 psi | 82% | 3412 fps | 95.5% |
| Accurate 2495 | <<locked>> | 96% | 34,751 psi | 58% | 3146 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 86% | 42,757 psi | 71% | 3176 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 92% | 51,343 psi | 85% | 3350 fps | 95.4% |
| ADI AR 2207 | 38.9 gr | 80% | 37,347 psi | 62% | 3159 fps | 99.6% |
| ADI AR 2219 | 47.3 gr | 88% | 42,743 psi | 71% | 3314 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 86% | 30,560 psi | 51% | 3028 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 82% | 33,576 psi | 56% | 3068 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,001 psi | 65% | 3150 fps | 97.8% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 40,915 psi | 68% | 3143 fps | 95.4% |
| Hodgdon H322 | 47.8 gr | 92% | 44,092 psi | 73% | 3346 fps | 95.6% |
| Hodgdon H335 | <<locked>> | 94% | 47,993 psi | 80% | 3419 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 84% | 44,208 psi | 73% | 3228 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,873 psi | 40% | 1952 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 41,379 psi | 69% | 3343 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 33,228 psi | 55% | 3012 fps | 96.4% |
| IMR 4227 | <<locked>> | 80% | 44,251 psi | 74% | 3235 fps | 99.7% |
| Lovex S053 | <<locked>> | 80% | 43,569 psi | 72% | 3199 fps | 100% |
| Norma 200 | <<locked>> | 80% | 36,274 psi | 60% | 3123 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,844 psi | 40% | 1998 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,077 psi | 73% | 3268 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 98% | 47,456 psi | 79% | 3369 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,364 psi | 67% | 2979 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 49,124 psi | 82% | 3442 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 40,567 psi | 67% | 3238 fps | 95.6% |
| Somchem S335 | <<locked>> | 98% | 44,860 psi | 75% | 3271 fps | 95.7% |
| Vihtavuori N110 | <<locked>> | 80% | 50,575 psi | 84% | 3251 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 37,492 psi | 62% | 3120 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 34,447 psi | 57% | 3022 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 92% | 37,681 psi | 63% | 3114 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 96% | 35,621 psi | 59% | 3150 fps | 95.1% |
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 57 powders for .308 Win. Ackley Improved loaded with the .308 | 90gr | Impala LWHV LS. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,586 fps; across all powders the maximum-charge window runs from 2,175 fps to 3,586 fps. Accurate 2015 gives the best case fill at 100 %, and 57 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2495, Accurate 2520 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. ADI AR 2219, ADI AR 2207, Hodgdon H322 rank at the top here: for .308 Win. Ackley Improved with the .308 | 90gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2520, Accurate 4064, ADI Benchmark 8208 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.