Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 168gr | Frontier PH HPFB 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% | 48,486 psi | 88% | 2667 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 49,850 psi | 90% | 2736 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 49,110 psi | 89% | 2733 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 47,732 psi | 87% | 2746 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 49,487 psi | 90% | 2717 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 48,936 psi | 89% | 2776 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,355 psi | 86% | 2838 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 86% | 47,442 psi | 86% | 2759 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 48,341 psi | 88% | 2756 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 49,821 psi | 90% | 2762 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 49,647 psi | 90% | 2740 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 49,516 psi | 90% | 2917 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 47,529 psi | 86% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 48,443 psi | 88% | 2799 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,079 psi | 85% | 2848 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 47,601 psi | 86% | 2887 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,228 psi | 60% | 2589 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 36,477 psi | 66% | 2723 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 46,702 psi | 85% | 2769 fps | 99.1% |
| Bofors RP3 | <<locked>> | 92% | 47,500 psi | 86% | 2789 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 48,849 psi | 89% | 2756 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 48,863 psi | 89% | 2700 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 48,370 psi | 88% | 2792 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 46,557 psi | 84% | 2828 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 92% | 48,878 psi | 89% | 2799 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 47,747 psi | 87% | 2838 fps | 97% |
| Hodgdon H4350 | <<locked>> | 96% | 49,197 psi | 89% | 2802 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 86% | 47,805 psi | 87% | 2769 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,352 psi | 79% | 2730 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 49,313 psi | 89% | 2848 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 48,733 psi | 88% | 2864 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,824 psi | 63% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 49,110 psi | 89% | 2772 fps | 99.9% |
| IMR 3031 | <<locked>> | 86% | 46,992 psi | 85% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 47,863 psi | 87% | 2740 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 48,443 psi | 88% | 2717 fps | 96.8% |
| IMR 4350ᴾ | <<locked>> | 100% | 48,501 psi | 88% | 2776 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,819 psi | 87% | 2740 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,281 psi | 82% | 2782 fps | 98.9% |
| IMR 4895 | <<locked>> | 90% | 49,617 psi | 90% | 2831 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 49,821 psi | 90% | 2762 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 49,501 psi | 90% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 49,356 psi | 90% | 2782 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 47,834 psi | 87% | 2690 fps | 99.7% |
| Lovex S062 | <<locked>> | 90% | 47,427 psi | 86% | 2740 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 49,501 psi | 90% | 2779 fps | 98.3% |
| Lovex S070 | <<locked>> | 98% | 47,079 psi | 85% | 2759 fps | 96.9% |
| Norma 201 | <<locked>> | 88% | 49,530 psi | 90% | 2759 fps | 100% |
| Norma 202 | <<locked>> | 88% | 49,690 psi | 90% | 2759 fps | 100% |
| Norma 203B | <<locked>> | 90% | 47,616 psi | 86% | 2789 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 47,413 psi | 86% | 2835 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 47,456 psi | 86% | 2805 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 46,557 psi | 84% | 2825 fps | 97.5% |
| Ramshot TAC | <<locked>> | 84% | 47,021 psi | 85% | 2726 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 86% | 49,081 psi | 89% | 2795 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 47,703 psi | 87% | 2713 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,085 psi | 64% | 1732 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 49,501 psi | 90% | 2746 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,588 psi | 90% | 2779 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 47,630 psi | 86% | 2854 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 47,514 psi | 86% | 2890 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,123 psi | 86% | 2861 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,225 psi | 88% | 2887 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 84% | 47,688 psi | 87% | 2697 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 49,763 psi | 90% | 2753 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 47,384 psi | 86% | 2779 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 48,849 psi | 89% | 2756 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 49,501 psi | 90% | 2779 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 49,356 psi | 90% | 2782 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 47,427 psi | 86% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 47,079 psi | 85% | 2759 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 49,066 psi | 89% | 2841 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 47,950 psi | 87% | 2746 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 48,820 psi | 89% | 2779 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 48,327 psi | 88% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 47,848 psi | 87% | 2651 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,690 psi | 90% | 2730 fps | 97.1% |
| Somchem S321 | <<locked>> | 82% | 47,485 psi | 86% | 2746 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 47,471 psi | 86% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 47,703 psi | 87% | 2746 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 48,327 psi | 88% | 2782 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,293 psi | 77% | 2785 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 48,225 psi | 88% | 2621 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 48,399 psi | 88% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 48,791 psi | 89% | 2717 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 46,949 psi | 85% | 2690 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 49,371 psi | 90% | 2759 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,763 psi | 90% | 2825 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 84% | 46,847 psi | 85% | 2710 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 48,385 psi | 88% | 2740 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,994 psi | 89% | 2838 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,172 psi | 64% | 2657 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 47,805 psi | 87% | 2766 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 49,400 psi | 90% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 47,993 psi | 87% | 2841 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 29,617 psi | 54% | 2559 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 48,356 psi | 88% | 2785 fps | 99.9% |
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% | 42,772 psi | 78% | 2579 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,601 psi | 85% | 2687 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,317 psi | 64% | 2507 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,785 psi | 76% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 46,340 psi | 84% | 2664 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 33,359 psi | 61% | 2500 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 31,198 psi | 57% | 2516 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 39,276 psi | 71% | 2608 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 33,518 psi | 61% | 2464 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,292 psi | 75% | 2618 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 40,654 psi | 74% | 2608 fps | 100% |
| Alliant Power Pro 2000-MR | 44 gr | 80% | 35,389 psi | 64% | 2625 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,547 psi | 59% | 2484 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,157 psi | 64% | 2543 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 32,837 psi | 60% | 2536 fps | 95.6% |
| Alliant Reloder-17 | 43.3 gr | 80% | 28,166 psi | 51% | 2441 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 27,891 psi | 51% | 2434 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 98% | 34,098 psi | 62% | 2661 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,276 psi | 69% | 2612 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 31,981 psi | 58% | 2487 fps | 97.9% |
| Bofors RP7 | <<locked>> | 94% | 45,672 psi | 83% | 2700 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,381 psi | 79% | 2608 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,465 psi | 72% | 2638 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,207 psi | 78% | 2766 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 33,025 psi | 60% | 2484 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 94% | 41,945 psi | 76% | 2730 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 94% | 46,325 psi | 84% | 2753 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 39,537 psi | 72% | 2618 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,108 psi | 51% | 2385 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,563 psi | 65% | 2592 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 96% | 45,542 psi | 83% | 2808 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,831 psi | 47% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,174 psi | 69% | 2575 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 38,580 psi | 70% | 2615 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,085 psi | 64% | 2493 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 42,743 psi | 78% | 2612 fps | 95.4% |
| IMR 4350 | <<locked>> | 98% | 45,411 psi | 82% | 2723 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 42,206 psi | 77% | 2638 fps | 95.2% |
| IMR 4831 | <<locked>> | 88% | 30,676 psi | 56% | 2477 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 35,955 psi | 65% | 2572 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 41,292 psi | 75% | 2618 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 46,238 psi | 84% | 2694 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,826 psi | 69% | 2589 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 39,972 psi | 73% | 2549 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 34,853 psi | 63% | 2500 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 36,637 psi | 66% | 2536 fps | 95.3% |
| Lovex S070 | <<locked>> | 94% | 41,452 psi | 75% | 2657 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 38,551 psi | 70% | 2562 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 38,508 psi | 70% | 2572 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,577 psi | 63% | 2533 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 32,271 psi | 59% | 2523 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,982 psi | 62% | 2539 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 38,508 psi | 70% | 2664 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 41,075 psi | 75% | 2615 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,205 psi | 73% | 2638 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,715 psi | 81% | 2664 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 47% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,311 psi | 84% | 2697 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 40,930 psi | 74% | 2625 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,376 psi | 66% | 2638 fps | 97.6% |
| ReloadSwiss RS 60 | 43.3 gr | 80% | 29,994 psi | 54% | 2507 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 33,750 psi | 61% | 2592 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 36,970 psi | 67% | 2654 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 42,250 psi | 77% | 2605 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,608 psi | 66% | 2516 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 30,110 psi | 55% | 2431 fps | 97% |
| Rottweil R 907 | <<locked>> | 94% | 45,672 psi | 83% | 2700 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 36,637 psi | 66% | 2536 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,826 psi | 69% | 2589 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 34,853 psi | 63% | 2500 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 41,452 psi | 75% | 2657 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,270 psi | 57% | 2480 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,117 psi | 71% | 2585 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,913 psi | 69% | 2579 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,263 psi | 73% | 2523 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,127 psi | 60% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 40,611 psi | 74% | 2579 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 44,469 psi | 81% | 2697 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 39,639 psi | 72% | 2523 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,986 psi | 71% | 2592 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 31,154 psi | 57% | 2438 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 25,440 psi | 46% | 2369 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 45,600 psi | 83% | 2582 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,408 psi | 73% | 2516 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,737 psi | 65% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,608 psi | 66% | 2513 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,602 psi | 54% | 2382 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 31,850 psi | 58% | 2474 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,350 psi | 75% | 2615 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 35,070 psi | 64% | 2503 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 33,112 psi | 60% | 2530 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 29,225 psi | 53% | 2507 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,398 psi | 52% | 2352 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 40,190 psi | 73% | 2654 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 42,206 psi | 77% | 2736 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 27,934 psi | 51% | 2500 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,101 psi | 67% | 2582 fps | 98.7% |
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 107 powders for 7.5 x 55 Swiss loaded with the .308 | 168gr | Frontier PH HPFB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,917 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 | 168gr | Frontier PH HPFB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.