Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 150gr | Peregrine Glider (Glider GRM) 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, Somchem S321 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>> | 84% | 53,693 psi | 89% | 2661 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 51,808 psi | 86% | 2717 fps | 100% |
| Accurate 2200 | <<locked>> | 88% | 53,954 psi | 90% | 2802 fps | 96.6% |
| Accurate 2230 | <<locked>> | 88% | 54,070 psi | 90% | 2805 fps | 97.1% |
| Accurate 2460 | <<locked>> | 94% | 54,157 psi | 90% | 2782 fps | 99.8% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,470 psi | 77% | 2703 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 51,111 psi | 85% | 2779 fps | 99.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 43,149 psi | 72% | 2677 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 88% | 51,285 psi | 85% | 2638 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 51,735 psi | 86% | 2651 fps | 99.4% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 54,215 psi | 90% | 2822 fps | 97.6% |
| ADI AR 2207 | <<locked>> | 86% | 51,663 psi | 86% | 2671 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 53,490 psi | 89% | 2795 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 98% | 54,099 psi | 90% | 2789 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 98% | 51,692 psi | 86% | 2789 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 51,648 psi | 86% | 2841 fps | 97.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 43,569 psi | 72% | 2674 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 92% | 52,170 psi | 87% | 2733 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 47,805 psi | 79% | 2740 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 86% | 52,779 psi | 88% | 2680 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 53,142 psi | 88% | 2680 fps | 100% |
| Baschieri & Pellagri 107ᴾ | <<locked>> | 100% | 54,230 psi | 90% | 2831 fps | 96.4% |
| Bofors RP3ᴾ | <<locked>> | 100% | 42,873 psi | 71% | 2674 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 96% | 53,911 psi | 90% | 2743 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 98% | 51,938 psi | 86% | 2815 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 96% | 54,273 psi | 90% | 2900 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 92% | 51,532 psi | 86% | 2766 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 52,895 psi | 88% | 2792 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 86% | 53,519 psi | 89% | 2687 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 98% | 51,111 psi | 85% | 2782 fps | 97.7% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 49,298 psi | 82% | 2799 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,721 psi | 54% | 1640 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 53,359 psi | 89% | 2792 fps | 97.9% |
| IMR 3031ᴾ | <<locked>> | 100% | 52,257 psi | 87% | 2835 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 48,225 psi | 80% | 2694 fps | 95.8% |
| IMR 4198 | <<locked>> | 92% | 53,635 psi | 89% | 2707 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 53,301 psi | 89% | 2631 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 48,892 psi | 81% | 2776 fps | 96.8% |
| IMR 8208 XBR | <<locked>> | 98% | 54,099 psi | 90% | 2789 fps | 98.6% |
| Lovex D073.4 | <<locked>> | 86% | 50,749 psi | 84% | 2743 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 94% | 54,070 psi | 90% | 2785 fps | 99.2% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 51,967 psi | 86% | 2802 fps | 99.5% |
| Lovex S053 | <<locked>> | 82% | 51,895 psi | 86% | 2575 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 52,823 psi | 88% | 2720 fps | 97.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 46,775 psi | 78% | 2694 fps | 97.6% |
| Norma 200 | <<locked>> | 88% | 52,112 psi | 87% | 2713 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 52,881 psi | 88% | 2776 fps | 98.5% |
| Norma 202ᴾ | <<locked>> | 100% | 52,895 psi | 88% | 2792 fps | 99.8% |
| Norma 203Bᴾ | <<locked>> | 100% | 46,818 psi | 78% | 2730 fps | 96.2% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 47,950 psi | 80% | 2753 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 98% | 53,490 psi | 89% | 2815 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 94% | 53,098 psi | 88% | 2746 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,706 psi | 54% | 1680 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 53,359 psi | 89% | 2667 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 51,169 psi | 85% | 2746 fps | 99.2% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 50,459 psi | 84% | 2851 fps | 96.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,945 psi | 70% | 2703 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 98% | 53,708 psi | 89% | 2772 fps | 99.8% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 49,545 psi | 82% | 2713 fps | 98% |
| Shooters World AR Plus | <<locked>> | 86% | 50,749 psi | 84% | 2743 fps | 99.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 51,967 psi | 86% | 2802 fps | 99.5% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 46,775 psi | 78% | 2694 fps | 97.6% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 51,721 psi | 86% | 2710 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 52,692 psi | 88% | 2431 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 53,722 psi | 89% | 2799 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 53,447 psi | 89% | 2749 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 52,852 psi | 88% | 2795 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 53,127 psi | 88% | 2700 fps | 99.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 45,368 psi | 75% | 2595 fps | 99.6% |
| Somchem S321 | <<locked>> | 94% | 52,156 psi | 87% | 2785 fps | 98.6% |
| Somchem S335 | <<locked>> | 98% | 51,271 psi | 85% | 2694 fps | 99.9% |
| Somchem S341 | <<locked>> | 98% | 52,069 psi | 87% | 2766 fps | 97% |
| Vihtavuori N120 | <<locked>> | 86% | 51,663 psi | 86% | 2621 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 52,924 psi | 88% | 2687 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 52,475 psi | 87% | 2694 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 47,529 psi | 79% | 2707 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,314 psi | 84% | 2723 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,059 psi | 67% | 2566 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 96% | 51,459 psi | 85% | 2743 fps | 98.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 48,370 psi | 80% | 2713 fps | 99.4% |
| Winchester 748 | <<locked>> | 98% | 53,055 psi | 88% | 2835 fps | 99.2% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 52,185 psi | 87% | 2802 fps | 97.8% |
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% | 47,210 psi | 78% | 2572 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,154 psi | 52% | 2346 fps | 98.4% |
| Accurate 2200 | <<locked>> | 84% | 47,282 psi | 79% | 2690 fps | 95.2% |
| Accurate 2230 | <<locked>> | 84% | 46,876 psi | 78% | 2690 fps | 95.5% |
| Accurate 2460 | <<locked>> | 80% | 33,243 psi | 55% | 2415 fps | 96.2% |
| Accurate 2495 | <<locked>> | 80% | 23,148 psi | 38% | 2201 fps | 95.8% |
| Accurate 2520 | <<locked>> | 84% | 33,243 psi | 55% | 2454 fps | 95.8% |
| Accurate 4064 | <<locked>> | 88% | 28,863 psi | 48% | 2375 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 40,176 psi | 67% | 2454 fps | 99.1% |
| Accurate LT-32 | <<locked>> | 80% | 40,553 psi | 67% | 2461 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 94% | 45,049 psi | 75% | 2671 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 42,844 psi | 71% | 2543 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,913 psi | 63% | 2533 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 39,566 psi | 66% | 2539 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 28,398 psi | 47% | 2359 fps | 99.5% |
| Alliant Power Pro 1200-R | 37.5 gr | 84% | 39,407 psi | 65% | 2618 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 38,464 psi | 64% | 2575 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,911 psi | 60% | 2461 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 98% | 44,773 psi | 74% | 2687 fps | 95% |
| Alliant Reloder-7 | <<locked>> | 80% | 43,758 psi | 73% | 2546 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,392 psi | 64% | 2441 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 50,908 psi | 85% | 2779 fps | 95.7% |
| Bofors RP3 | <<locked>> | 98% | 39,987 psi | 66% | 2621 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 37,275 psi | 62% | 2451 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 88% | 36,492 psi | 61% | 2539 fps | 95.5% |
| Hodgdon CFE223 | <<locked>> | 92% | 47,340 psi | 79% | 2782 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 34,650 psi | 58% | 2461 fps | 97.9% |
| Hodgdon H335 | <<locked>> | 80% | 34,998 psi | 58% | 2474 fps | 97% |
| Hodgdon H4198 | <<locked>> | 80% | 44,353 psi | 74% | 2543 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 92% | 42,438 psi | 71% | 2631 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 40,451 psi | 67% | 2638 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,076 psi | 40% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 41,220 psi | 68% | 2585 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 27,209 psi | 45% | 2329 fps | 96.1% |
| IMR 4064 | <<locked>> | 98% | 45,484 psi | 76% | 2648 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 37,536 psi | 62% | 2448 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 50,227 psi | 83% | 2589 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 43,207 psi | 72% | 2677 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 88% | 39,566 psi | 66% | 2539 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 41,118 psi | 68% | 2579 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 82% | 35,549 psi | 59% | 2464 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 86% | 31,966 psi | 53% | 2434 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 48,950 psi | 81% | 2536 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 44,034 psi | 73% | 2575 fps | 95.4% |
| Lovex S062 | <<locked>> | 94% | 38,725 psi | 64% | 2543 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 40,350 psi | 67% | 2526 fps | 100% |
| Norma 201 | <<locked>> | 90% | 38,421 psi | 64% | 2523 fps | 95.5% |
| Norma 202 | <<locked>> | 82% | 29,530 psi | 49% | 2343 fps | 95.1% |
| Norma 203B | <<locked>> | 98% | 43,845 psi | 73% | 2677 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 98% | 44,672 psi | 74% | 2694 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 92% | 43,830 psi | 73% | 2654 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 90% | 46,586 psi | 77% | 2644 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,178 psi | 40% | 1503 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 49,995 psi | 83% | 2621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,345 psi | 57% | 2431 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 47,195 psi | 78% | 2795 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 36,651 psi | 61% | 2582 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 30,937 psi | 51% | 2339 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 92% | 38,696 psi | 64% | 2520 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 41,118 psi | 68% | 2579 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 31,966 psi | 53% | 2434 fps | 95.3% |
| Shooters World Precision | <<locked>> | 94% | 38,725 psi | 64% | 2543 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 39,189 psi | 65% | 2493 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 44,918 psi | 75% | 2329 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,435 psi | 64% | 2536 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,680 psi | 61% | 2470 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 43,323 psi | 72% | 2635 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,124 psi | 50% | 2274 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,543 psi | 46% | 2228 fps | 95.3% |
| Somchem S321 | 40.3 gr | 84% | 36,724 psi | 61% | 2507 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 29,182 psi | 48% | 2270 fps | 95.9% |
| Somchem S341 | <<locked>> | 94% | 45,426 psi | 75% | 2657 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 42,946 psi | 71% | 2497 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,432 psi | 57% | 2379 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 80% | 29,936 psi | 50% | 2290 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 80% | 24,860 psi | 41% | 2231 fps | 96.3% |
| Vihtavuori N140 | <<locked>> | 84% | 29,907 psi | 50% | 2333 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 98% | 37,449 psi | 62% | 2513 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 88% | 39,407 psi | 65% | 2536 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 86% | 30,501 psi | 51% | 2362 fps | 95.2% |
| Winchester 748 | 40.2 gr | 86% | 35,375 psi | 59% | 2513 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 94% | 42,322 psi | 70% | 2638 fps | 95.6% |
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 | 150gr | Peregrine Glider (Glider GRM). Hodgdon CFE223 delivers the highest muzzle velocity at 2,900 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,900 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 150.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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, Somchem S321, Winchester 748 rank at the top here: for .308 Win. Ackley Improved with the .308 | 150gr | Peregrine Glider (Glider GRM) 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.