Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 175gr | Barnes LRX BT bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Alliant Reloder-17.
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>> | 86% | 49,284 psi | 89% | 2608 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,427 psi | 86% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,197 psi | 89% | 2667 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,631 psi | 88% | 2690 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 49,255 psi | 89% | 2710 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,715 psi | 81% | 2726 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 88% | 48,385 psi | 88% | 2703 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 49,400 psi | 90% | 2700 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 47,761 psi | 87% | 2657 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 47,369 psi | 86% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 49,052 psi | 89% | 2756 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 47,500 psi | 86% | 2805 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,428 psi | 88% | 2720 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,356 psi | 90% | 2615 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 49,298 psi | 89% | 2743 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,991 psi | 82% | 2736 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 98% | 48,747 psi | 88% | 2831 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 31,386 psi | 57% | 2477 fps | 97% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 47,776 psi | 87% | 2717 fps | 99.2% |
| Bofors RP3 | <<locked>> | 94% | 48,399 psi | 88% | 2733 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 49,530 psi | 90% | 2694 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 47,036 psi | 85% | 2598 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 49,313 psi | 89% | 2733 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 47,703 psi | 87% | 2772 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 48,211 psi | 87% | 2654 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,994 psi | 89% | 2680 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 46,833 psi | 85% | 2694 fps | 98.7% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 48,762 psi | 88% | 2779 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 88% | 48,762 psi | 88% | 2713 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,118 psi | 75% | 2621 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 47,311 psi | 86% | 2743 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 46,456 psi | 84% | 2749 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,447 psi | 63% | 1634 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 47,239 psi | 86% | 2671 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 48,051 psi | 87% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 49,037 psi | 89% | 2684 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 49,530 psi | 90% | 2661 fps | 97% |
| IMR 4350ᴾ | <<locked>> | 100% | 46,267 psi | 84% | 2664 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,834 psi | 89% | 2684 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,960 psi | 78% | 2674 fps | 98.6% |
| IMR 4895 | <<locked>> | 90% | 47,326 psi | 86% | 2723 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 47,761 psi | 87% | 2657 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 47,181 psi | 86% | 2638 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 46,847 psi | 85% | 2674 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,849 psi | 89% | 2635 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 48,356 psi | 88% | 2680 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 47,369 psi | 86% | 2674 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 47,732 psi | 87% | 2700 fps | 97.1% |
| Norma 201 | <<locked>> | 88% | 47,224 psi | 86% | 2651 fps | 100% |
| Norma 202 | <<locked>> | 88% | 47,485 psi | 86% | 2657 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,472 psi | 88% | 2730 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 45,121 psi | 82% | 2723 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 92% | 48,443 psi | 88% | 2749 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,483 psi | 81% | 2717 fps | 97.2% |
| Ramshot TAC | <<locked>> | 86% | 47,993 psi | 87% | 2671 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 47,079 psi | 85% | 2690 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,776 psi | 89% | 2657 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,650 psi | 63% | 1670 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 47,587 psi | 86% | 2644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,543 psi | 86% | 2674 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 48,602 psi | 88% | 2799 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 48,472 psi | 88% | 2831 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,556 psi | 81% | 2746 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,108 psi | 84% | 2772 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 86% | 48,124 psi | 87% | 2635 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,485 psi | 86% | 2648 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 47,950 psi | 87% | 2717 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 49,530 psi | 90% | 2694 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,369 psi | 86% | 2674 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 88% | 46,847 psi | 85% | 2674 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,356 psi | 88% | 2680 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 47,732 psi | 87% | 2700 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 47,007 psi | 85% | 2736 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 49,298 psi | 89% | 2697 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 46,804 psi | 85% | 2674 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 49,472 psi | 90% | 2598 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 49,139 psi | 89% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,239 psi | 86% | 2621 fps | 96.7% |
| Somchem S321 | <<locked>> | 84% | 48,544 psi | 88% | 2694 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 48,515 psi | 88% | 2598 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 48,834 psi | 89% | 2690 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 48,936 psi | 89% | 2720 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,885 psi | 72% | 2671 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 49,371 psi | 90% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,574 psi | 90% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 49,632 psi | 90% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 47,906 psi | 87% | 2635 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 47,137 psi | 86% | 2654 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,572 psi | 86% | 2720 fps | 99% |
| Vihtavuori N530 | <<locked>> | 86% | 48,109 psi | 87% | 2657 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 49,429 psi | 90% | 2684 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,601 psi | 85% | 2730 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 32,938 psi | 60% | 2546 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,747 psi | 88% | 2707 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 47,152 psi | 86% | 2700 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,762 psi | 88% | 2779 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 90% | 49,458 psi | 90% | 2733 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% | 40,770 psi | 74% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,338 psi | 80% | 2585 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,692 psi | 59% | 2398 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,392 psi | 71% | 2543 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 30,951 psi | 56% | 2388 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 31,270 psi | 57% | 2461 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 37,478 psi | 68% | 2507 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 31,836 psi | 58% | 2362 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,566 psi | 72% | 2516 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 38,435 psi | 70% | 2507 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,818 psi | 83% | 2703 fps | 99.8% |
| Alliant Power Pro 2000-MR | 41.8 gr | 80% | 33,837 psi | 61% | 2520 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,893 psi | 56% | 2385 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,427 psi | 84% | 2572 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,359 psi | 61% | 2441 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 33,040 psi | 60% | 2480 fps | 95.8% |
| Alliant Reloder-17 | 42.1 gr | 82% | 28,413 psi | 52% | 2388 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 27,833 psi | 51% | 2375 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,419 psi | 66% | 2507 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 29,849 psi | 54% | 2379 fps | 97.4% |
| Bofors RP7 | <<locked>> | 94% | 43,700 psi | 79% | 2595 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,669 psi | 76% | 2510 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,579 psi | 68% | 2536 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,249 psi | 75% | 2661 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 45,368 psi | 82% | 2612 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,905 psi | 83% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 33,460 psi | 61% | 2434 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 94% | 40,059 psi | 73% | 2625 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 37,739 psi | 68% | 2516 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 28,137 psi | 51% | 2329 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,591 psi | 61% | 2480 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 96% | 43,207 psi | 78% | 2690 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,512 psi | 46% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,506 psi | 66% | 2477 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 36,709 psi | 67% | 2516 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,315 psi | 60% | 2392 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 41,162 psi | 75% | 2513 fps | 95% |
| IMR 4350 | <<locked>> | 98% | 43,656 psi | 79% | 2621 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 42,975 psi | 78% | 2582 fps | 95.5% |
| IMR 4831 | <<locked>> | 90% | 30,835 psi | 56% | 2425 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 34,142 psi | 62% | 2470 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 39,566 psi | 72% | 2516 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 44,121 psi | 80% | 2592 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 35,650 psi | 65% | 2484 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 38,276 psi | 69% | 2448 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 32,895 psi | 60% | 2398 fps | 98.4% |
| Lovex S065 | <<locked>> | 90% | 36,782 psi | 67% | 2477 fps | 95.5% |
| Lovex S070 | <<locked>> | 94% | 39,465 psi | 72% | 2556 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 36,463 psi | 66% | 2461 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 36,825 psi | 67% | 2477 fps | 100% |
| Norma 203B | <<locked>> | 80% | 32,764 psi | 59% | 2431 fps | 97.3% |
| Norma URP | <<locked>> | 90% | 32,590 psi | 59% | 2470 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 32,358 psi | 59% | 2441 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 96% | 39,175 psi | 71% | 2612 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 39,479 psi | 72% | 2516 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,508 psi | 70% | 2539 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,786 psi | 78% | 2559 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 47% | 1496 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,585 psi | 81% | 2598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 38,943 psi | 71% | 2520 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,432 psi | 62% | 2530 fps | 97.2% |
| ReloadSwiss RS 60 | 41.1 gr | 80% | 28,442 psi | 52% | 2402 fps | 98.3% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 31,763 psi | 58% | 2480 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 35,085 psi | 64% | 2543 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,059 psi | 73% | 2500 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 34,780 psi | 63% | 2415 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 28,152 psi | 51% | 2326 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 43,700 psi | 79% | 2595 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 36,782 psi | 67% | 2477 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,650 psi | 65% | 2484 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 32,895 psi | 60% | 2398 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 94% | 39,465 psi | 72% | 2556 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 29,617 psi | 54% | 2375 fps | 95.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,318 psi | 68% | 2487 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,085 psi | 65% | 2477 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,551 psi | 70% | 2425 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,531 psi | 57% | 2300 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 41,350 psi | 75% | 2526 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 42,337 psi | 77% | 2592 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 37,739 psi | 68% | 2425 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,043 psi | 67% | 2487 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 29,240 psi | 53% | 2336 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 23,859 psi | 43% | 2260 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 43,816 psi | 80% | 2487 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,711 psi | 70% | 2421 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,794 psi | 61% | 2405 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,780 psi | 63% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 27,847 psi | 51% | 2280 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 32,126 psi | 58% | 2418 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 39,305 psi | 71% | 2510 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 33,199 psi | 60% | 2402 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 33,504 psi | 61% | 2477 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 96% | 29,037 psi | 53% | 2444 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 26,803 psi | 49% | 2251 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 38,247 psi | 69% | 2549 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 40,059 psi | 73% | 2625 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,056 psi | 64% | 2477 fps | 98.4% |
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 | Barnes LRX BT. Alliant Reloder-17 delivers the highest muzzle velocity at 2,831 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,831 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 57–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.308" calls for a 1:10.5 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7.5 x 55 Swiss with the .308 | 175gr | Barnes LRX BT 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.