Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 175gr | Atomic 29 HP bullet and 97 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 Reloder-17 and Alliant Power Pro 2000-MR.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 47,747 psi | 87% | 2602 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 48,878 psi | 89% | 2667 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 47,834 psi | 87% | 2661 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 47,224 psi | 86% | 2684 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 48,994 psi | 89% | 2657 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 47,877 psi | 87% | 2707 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,876 psi | 85% | 2776 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 86% | 46,992 psi | 85% | 2697 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 48,124 psi | 87% | 2700 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 49,487 psi | 90% | 2700 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 49,197 psi | 89% | 2674 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 49,182 psi | 89% | 2854 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 47,282 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 47,790 psi | 87% | 2733 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,818 psi | 85% | 2789 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 47,079 psi | 85% | 2825 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,692 psi | 59% | 2530 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 35,897 psi | 65% | 2664 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 49,516 psi | 90% | 2759 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 46,862 psi | 85% | 2723 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 48,298 psi | 88% | 2694 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 48,428 psi | 88% | 2638 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 47,776 psi | 87% | 2726 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 49,414 psi | 90% | 2818 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 48,327 psi | 88% | 2736 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 47,485 psi | 86% | 2779 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 96% | 48,936 psi | 89% | 2743 fps | 96% |
| Hodgdon H4895 | <<locked>> | 86% | 47,369 psi | 86% | 2707 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,641 psi | 77% | 2664 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 48,907 psi | 89% | 2782 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 48,443 psi | 88% | 2808 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,722 psi | 63% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 48,820 psi | 89% | 2713 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 49,806 psi | 90% | 2736 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 47,514 psi | 86% | 2680 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,892 psi | 87% | 2654 fps | 97% |
| IMR 4350ᴾ | <<locked>> | 100% | 47,964 psi | 87% | 2713 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,442 psi | 86% | 2680 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,933 psi | 82% | 2723 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 48,979 psi | 89% | 2762 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 49,487 psi | 90% | 2700 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 48,892 psi | 89% | 2680 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 48,921 psi | 89% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 47,442 psi | 86% | 2631 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 46,949 psi | 85% | 2677 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 49,023 psi | 89% | 2717 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,327 psi | 90% | 2746 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 48,631 psi | 88% | 2690 fps | 100% |
| Norma 202 | <<locked>> | 88% | 49,255 psi | 89% | 2697 fps | 100% |
| Norma 203B | <<locked>> | 90% | 46,992 psi | 85% | 2723 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 46,775 psi | 85% | 2769 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 47,079 psi | 85% | 2746 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,093 psi | 84% | 2762 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 49,676 psi | 90% | 2717 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 48,907 psi | 89% | 2736 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 47,355 psi | 86% | 2654 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,925 psi | 63% | 1690 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 49,081 psi | 89% | 2684 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,182 psi | 89% | 2720 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 47,471 psi | 86% | 2795 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 47,253 psi | 86% | 2828 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,659 psi | 85% | 2799 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,863 psi | 87% | 2825 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 49,734 psi | 90% | 2674 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 49,226 psi | 89% | 2690 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 46,746 psi | 85% | 2713 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 48,298 psi | 88% | 2694 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 49,023 psi | 89% | 2717 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 48,921 psi | 89% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 46,949 psi | 85% | 2677 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,327 psi | 90% | 2746 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 48,704 psi | 88% | 2779 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 47,616 psi | 86% | 2690 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 48,602 psi | 88% | 2720 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 47,790 psi | 87% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 47,543 psi | 86% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,313 psi | 89% | 2671 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 46,775 psi | 85% | 2680 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 46,891 psi | 85% | 2592 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 47,224 psi | 86% | 2684 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 47,659 psi | 86% | 2717 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,597 psi | 75% | 2720 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 47,863 psi | 87% | 2559 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 47,935 psi | 87% | 2579 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 48,269 psi | 88% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 49,603 psi | 90% | 2674 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 48,936 psi | 89% | 2697 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,545 psi | 90% | 2766 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 49,835 psi | 90% | 2700 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 47,834 psi | 87% | 2674 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,501 psi | 88% | 2776 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,534 psi | 63% | 2598 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 47,108 psi | 85% | 2700 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 48,849 psi | 89% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 47,485 psi | 86% | 2779 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 28,892 psi | 52% | 2500 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 47,819 psi | 87% | 2723 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 42,163 psi | 77% | 2516 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,876 psi | 83% | 2625 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,272 psi | 62% | 2441 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,162 psi | 75% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 45,730 psi | 83% | 2605 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 32,430 psi | 59% | 2434 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 30,516 psi | 55% | 2454 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 38,638 psi | 70% | 2546 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 33,098 psi | 60% | 2408 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,698 psi | 74% | 2552 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 39,958 psi | 73% | 2543 fps | 100% |
| Alliant Power Pro 2000-MR | 43.2 gr | 80% | 34,925 psi | 63% | 2566 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,039 psi | 58% | 2425 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,476 psi | 63% | 2480 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 32,169 psi | 58% | 2474 fps | 95.8% |
| Alliant Reloder-17 | 42.5 gr | 80% | 27,557 psi | 50% | 2382 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 27,209 psi | 49% | 2375 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 33,431 psi | 61% | 2602 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,608 psi | 68% | 2546 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 31,140 psi | 56% | 2421 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 42,598 psi | 77% | 2595 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,801 psi | 78% | 2546 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,914 psi | 71% | 2575 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,873 psi | 78% | 2707 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 80% | 32,300 psi | 59% | 2421 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 92% | 38,740 psi | 70% | 2615 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 45,963 psi | 83% | 2694 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 38,899 psi | 71% | 2556 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 27,470 psi | 50% | 2326 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,012 psi | 64% | 2530 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 41,872 psi | 76% | 2687 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,759 psi | 47% | 1476 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,623 psi | 68% | 2513 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 38,145 psi | 69% | 2552 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,650 psi | 63% | 2438 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 39,784 psi | 72% | 2503 fps | 95% |
| IMR 4350 | <<locked>> | 96% | 42,380 psi | 77% | 2615 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 41,916 psi | 76% | 2582 fps | 95.6% |
| IMR 4831 | <<locked>> | 88% | 30,081 psi | 55% | 2418 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 35,273 psi | 64% | 2510 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,698 psi | 74% | 2552 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 45,556 psi | 83% | 2631 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,057 psi | 67% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 39,363 psi | 71% | 2487 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 34,055 psi | 62% | 2438 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 35,824 psi | 65% | 2474 fps | 95.5% |
| Lovex S070 | <<locked>> | 92% | 38,276 psi | 69% | 2546 fps | 95% |
| Norma 201 | <<locked>> | 80% | 37,913 psi | 69% | 2503 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 38,058 psi | 69% | 2513 fps | 100% |
| Norma 203B | <<locked>> | 80% | 33,866 psi | 61% | 2470 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 31,734 psi | 58% | 2464 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 33,460 psi | 61% | 2480 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 38,043 psi | 69% | 2608 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 40,625 psi | 74% | 2556 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,769 psi | 72% | 2579 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,280 psi | 80% | 2602 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,817 psi | 47% | 1509 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,774 psi | 83% | 2631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 37,840 psi | 69% | 2513 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,810 psi | 65% | 2575 fps | 97.8% |
| ReloadSwiss RS 60 | 42.5 gr | 80% | 29,399 psi | 53% | 2448 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 30,850 psi | 56% | 2474 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 34,084 psi | 62% | 2539 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 41,408 psi | 75% | 2539 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,955 psi | 65% | 2454 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 29,254 psi | 53% | 2365 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 42,598 psi | 77% | 2595 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 35,824 psi | 65% | 2474 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,057 psi | 67% | 2523 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 34,055 psi | 62% | 2438 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 38,276 psi | 69% | 2546 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,690 psi | 56% | 2421 fps | 96.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,537 psi | 70% | 2526 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,362 psi | 68% | 2520 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,494 psi | 72% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,416 psi | 59% | 2333 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 39,972 psi | 73% | 2520 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 43,685 psi | 79% | 2631 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 39,117 psi | 71% | 2464 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,290 psi | 69% | 2526 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 30,516 psi | 55% | 2379 fps | 97.2% |
| Somchem S365 | <<locked>> | 82% | 23,250 psi | 42% | 2254 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 44,875 psi | 81% | 2516 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,726 psi | 72% | 2454 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,911 psi | 63% | 2438 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,926 psi | 65% | 2451 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 28,848 psi | 52% | 2320 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 31,314 psi | 57% | 2415 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 40,727 psi | 74% | 2552 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 34,432 psi | 62% | 2441 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 32,605 psi | 59% | 2470 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 28,456 psi | 52% | 2444 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 27,717 psi | 50% | 2293 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 39,653 psi | 72% | 2592 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 38,972 psi | 71% | 2621 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 98% | 27,195 psi | 49% | 2438 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,579 psi | 66% | 2523 fps | 98.9% |
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 97 powders for 7.5 x 55 Swiss loaded with the .308 | 175gr | Atomic 29 HP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,854 fps; across all powders the maximum-charge window runs from 1,654 fps to 2,854 fps. Accurate 4350 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.308" calls for a 1:11.5 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 Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for 7.5 x 55 Swiss with the .308 | 175gr | Atomic 29 HP 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.