Load Specifications
Load data in caliber .30-06 Ackley Improved with .308 | 180gr | Sako SuperHammerhead bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and Hodgdon Superformance.
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 2015 | <<locked>> | 84% | 54,476 psi | 87% | 2595 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,260 psi | 90% | 2667 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,347 psi | 90% | 2661 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,621 psi | 88% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,448 psi | 89% | 2661 fps | 97.1% |
| Accurate 4064 | <<locked>> | 92% | 56,130 psi | 90% | 2707 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,709 psi | 89% | 2785 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 53,374 psi | 86% | 2690 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 54,317 psi | 87% | 2687 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,796 psi | 89% | 2690 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 53,113 psi | 85% | 2621 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 52,547 psi | 84% | 2795 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 54,244 psi | 87% | 2710 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,824 psi | 88% | 2730 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,461 psi | 86% | 2785 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,621 psi | 88% | 2825 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,261 psi | 61% | 2536 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,424 psi | 68% | 2684 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 53,069 psi | 85% | 2703 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 54,650 psi | 88% | 2723 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,882 psi | 88% | 2694 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 54,143 psi | 87% | 2625 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,027 psi | 88% | 2720 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 53,461 psi | 86% | 2766 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 55,796 psi | 89% | 2740 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 98% | 55,230 psi | 89% | 2785 fps | 98% |
| Hodgdon H4350 | <<locked>> | 96% | 55,840 psi | 90% | 2746 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 86% | 53,867 psi | 86% | 2700 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2674 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 53,040 psi | 85% | 2730 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,941 psi | 90% | 2822 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 57% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,143 psi | 88% | 2703 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 53,664 psi | 86% | 2680 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,896 psi | 86% | 2674 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,780 psi | 86% | 2651 fps | 97.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,926 psi | 88% | 2717 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 53,345 psi | 86% | 2674 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,794 psi | 85% | 2730 fps | 99.5% |
| IMR 4895 | <<locked>> | 90% | 56,217 psi | 90% | 2759 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,796 psi | 89% | 2690 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,941 psi | 90% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 52,924 psi | 85% | 2667 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,391 psi | 90% | 2667 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 53,635 psi | 86% | 2671 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,144 psi | 90% | 2720 fps | 99% |
| Lovex S070 | <<locked>> | 98% | 53,621 psi | 86% | 2703 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 55,317 psi | 89% | 2684 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,941 psi | 90% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,998 psi | 87% | 2717 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 55,666 psi | 89% | 2766 fps | 96.1% |
| Norma URPᴾ | <<locked>> | 100% | 54,723 psi | 88% | 2772 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 54,520 psi | 87% | 2743 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,534 psi | 86% | 2769 fps | 98.4% |
| Ramshot TAC | <<locked>> | 86% | 56,188 psi | 90% | 2713 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,680 psi | 89% | 2726 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 53,243 psi | 85% | 2644 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,839 psi | 57% | 1673 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,201 psi | 89% | 2671 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,231 psi | 90% | 2723 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,201 psi | 89% | 2795 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,447 psi | 87% | 2825 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 2808 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,259 psi | 89% | 2835 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 86% | 56,420 psi | 90% | 2664 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,825 psi | 90% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,520 psi | 87% | 2717 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,882 psi | 88% | 2694 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,144 psi | 90% | 2720 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 52,924 psi | 85% | 2667 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 53,635 psi | 86% | 2671 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 53,621 psi | 86% | 2703 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 52,837 psi | 85% | 2726 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,462 psi | 87% | 2687 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,158 psi | 88% | 2710 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,722 psi | 86% | 2582 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,911 psi | 86% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 53,200 psi | 85% | 2628 fps | 97.4% |
| Somchem S321 | <<locked>> | 82% | 53,461 psi | 86% | 2674 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,246 psi | 90% | 2621 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,143 psi | 87% | 2684 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,868 psi | 88% | 2713 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,081 psi | 79% | 2726 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 53,432 psi | 86% | 2546 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,954 psi | 87% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,666 psi | 89% | 2648 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,434 psi | 90% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,289 psi | 90% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,882 psi | 86% | 2723 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 56,231 psi | 90% | 2690 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,578 psi | 88% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 52,852 psi | 85% | 2726 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,597 psi | 67% | 2608 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,317 psi | 87% | 2703 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,159 psi | 90% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,230 psi | 89% | 2785 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,185 psi | 55% | 2530 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,969 psi | 88% | 2720 fps | 100% |
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 2015 | <<locked>> | 80% | 48,153 psi | 77% | 2510 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,692 psi | 84% | 2618 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,828 psi | 65% | 2438 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,718 psi | 77% | 2582 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,675 psi | 78% | 2556 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 38,609 psi | 62% | 2434 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,461 psi | 55% | 2411 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 44,309 psi | 71% | 2539 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,623 psi | 60% | 2395 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,369 psi | 74% | 2549 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 46,659 psi | 75% | 2533 fps | 100% |
| Alliant Power Pro 2000-MR | 49 gr | 80% | 40,190 psi | 64% | 2569 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,173 psi | 60% | 2418 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,059 psi | 64% | 2480 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,838 psi | 56% | 2425 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,068 psi | 51% | 2385 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,023 psi | 48% | 2333 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,028 psi | 59% | 2562 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,221 psi | 69% | 2539 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 36,869 psi | 59% | 2425 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 45,513 psi | 73% | 2543 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,124 psi | 77% | 2536 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,179 psi | 72% | 2569 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,676 psi | 80% | 2707 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 37,753 psi | 61% | 2425 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 90% | 42,206 psi | 68% | 2566 fps | 95% |
| Hodgdon H4350 | <<locked>> | 92% | 49,226 psi | 79% | 2641 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 44,744 psi | 72% | 2552 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,037 psi | 48% | 2277 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,524 psi | 65% | 2523 fps | 99.3% |
| Hodgdon Superformance | 58.6 gr | 92% | 45,237 psi | 73% | 2641 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 42% | 1460 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,772 psi | 69% | 2503 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 44,251 psi | 71% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,494 psi | 63% | 2428 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,788 psi | 72% | 2500 fps | 95.6% |
| IMR 4350 | <<locked>> | 94% | 45,658 psi | 73% | 2566 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,512 psi | 71% | 2526 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 33,460 psi | 54% | 2375 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 40,988 psi | 66% | 2510 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 46,369 psi | 74% | 2549 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 52,388 psi | 84% | 2628 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,424 psi | 70% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,295 psi | 71% | 2480 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,407 psi | 63% | 2434 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 38,885 psi | 62% | 2425 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 41,713 psi | 67% | 2500 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,482 psi | 70% | 2497 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 43,613 psi | 70% | 2503 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,450 psi | 63% | 2470 fps | 98.3% |
| Norma 204 | <<locked>> | 98% | 52,011 psi | 83% | 2710 fps | 95.3% |
| Norma URP | <<locked>> | 86% | 34,925 psi | 56% | 2418 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,885 psi | 62% | 2480 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 41,423 psi | 66% | 2559 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 45,992 psi | 74% | 2549 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,600 psi | 73% | 2572 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,748 psi | 80% | 2592 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,774 psi | 43% | 1496 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,967 psi | 83% | 2625 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,640 psi | 65% | 2461 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,032 psi | 67% | 2579 fps | 98.4% |
| ReloadSwiss RS 60 | 48.2 gr | 80% | 34,113 psi | 55% | 2448 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,316 psi | 55% | 2431 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,782 psi | 59% | 2487 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 47,427 psi | 76% | 2533 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,249 psi | 66% | 2448 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,722 psi | 56% | 2372 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 45,513 psi | 73% | 2543 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,885 psi | 62% | 2425 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,424 psi | 70% | 2523 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,407 psi | 63% | 2434 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 41,713 psi | 67% | 2500 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,621 psi | 57% | 2418 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,425 psi | 71% | 2526 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,801 psi | 69% | 2513 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,831 psi | 72% | 2451 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,275 psi | 60% | 2326 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,598 psi | 70% | 2474 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 49,835 psi | 80% | 2621 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 44,411 psi | 71% | 2454 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,019 psi | 71% | 2523 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,578 psi | 57% | 2375 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 25,744 psi | 41% | 2208 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 50,575 psi | 81% | 2507 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,150 psi | 72% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,799 psi | 65% | 2434 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,408 psi | 66% | 2444 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,837 psi | 54% | 2316 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 34,229 psi | 55% | 2369 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 46,485 psi | 75% | 2546 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,842 psi | 64% | 2434 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 35,868 psi | 58% | 2418 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 92% | 32,097 psi | 51% | 2402 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,849 psi | 48% | 2241 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 45,948 psi | 74% | 2585 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,453 psi | 68% | 2569 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,052 psi | 48% | 2405 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,250 psi | 68% | 2516 fps | 99.2% |
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 98 powders for .30-06 Ackley Improved loaded with the .308 | 180gr | Sako SuperHammerhead. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,835 fps. Accurate 4350 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, Hodgdon Superformance rank at the top here: for .30-06 Ackley Improved with the .308 | 180gr | Sako SuperHammerhead 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.