Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 167gr | Peregrine Plainsmaster (VLR-4) bullet and 95 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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Max Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 49,255 psi | 89% | 2687 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,181 psi | 86% | 2707 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,037 psi | 89% | 2746 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,486 psi | 88% | 2769 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 49,023 psi | 89% | 2789 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,715 psi | 81% | 2802 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 88% | 48,356 psi | 88% | 2782 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 94% | 49,240 psi | 89% | 2779 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 47,877 psi | 87% | 2740 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 46,963 psi | 85% | 2713 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,689 psi | 88% | 2835 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 47,413 psi | 86% | 2884 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,196 psi | 87% | 2795 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,255 psi | 89% | 2697 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 49,095 psi | 89% | 2818 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,875 psi | 81% | 2812 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 48,588 psi | 88% | 2910 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 31,430 psi | 57% | 2546 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 47,761 psi | 87% | 2792 fps | 99.1% |
| Bofors RP3 | <<locked>> | 94% | 47,993 psi | 87% | 2805 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 49,429 psi | 90% | 2769 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 47,036 psi | 85% | 2677 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 49,298 psi | 89% | 2815 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 47,543 psi | 86% | 2851 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 82% | 48,240 psi | 88% | 2736 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 49,023 psi | 89% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 46,543 psi | 84% | 2766 fps | 98.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 48,602 psi | 88% | 2858 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 48,762 psi | 88% | 2795 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,988 psi | 74% | 2694 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 47,021 psi | 85% | 2818 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,432 psi | 62% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 46,934 psi | 85% | 2746 fps | 99.7% |
| IMR 3031 | <<locked>> | 88% | 47,877 psi | 87% | 2779 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 48,675 psi | 88% | 2759 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 90% | 49,400 psi | 90% | 2736 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 48,501 psi | 88% | 2756 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,685 psi | 77% | 2746 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 47,210 psi | 86% | 2802 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 47,877 psi | 87% | 2740 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 47,152 psi | 86% | 2717 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 46,702 psi | 85% | 2753 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 49,008 psi | 89% | 2717 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 47,950 psi | 87% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 47,282 psi | 86% | 2749 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 47,485 psi | 86% | 2776 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 47,007 psi | 85% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 88% | 47,253 psi | 86% | 2733 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,269 psi | 88% | 2805 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 44,875 psi | 81% | 2799 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 92% | 48,254 psi | 88% | 2825 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,367 psi | 81% | 2789 fps | 96.9% |
| Ramshot TAC | <<locked>> | 86% | 48,051 psi | 87% | 2749 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 46,876 psi | 85% | 2766 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,733 psi | 88% | 2736 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,592 psi | 63% | 1729 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 47,210 psi | 86% | 2720 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,471 psi | 86% | 2749 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 48,617 psi | 88% | 2881 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 48,443 psi | 88% | 2913 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,570 psi | 81% | 2825 fps | 98.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,050 psi | 84% | 2851 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 86% | 48,153 psi | 87% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,268 psi | 86% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 47,935 psi | 87% | 2795 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 49,429 psi | 90% | 2769 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,282 psi | 86% | 2749 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 46,702 psi | 85% | 2753 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 47,950 psi | 87% | 2756 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 47,485 psi | 86% | 2776 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 46,862 psi | 85% | 2812 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 48,965 psi | 89% | 2769 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 46,659 psi | 85% | 2753 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 49,124 psi | 89% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 48,791 psi | 89% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,340 psi | 86% | 2700 fps | 96.4% |
| Somchem S321 | <<locked>> | 84% | 48,443 psi | 88% | 2769 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 48,356 psi | 88% | 2674 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 48,776 psi | 89% | 2769 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 48,965 psi | 89% | 2799 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,871 psi | 72% | 2749 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 49,211 psi | 89% | 2644 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,211 psi | 89% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 49,676 psi | 90% | 2740 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 47,892 psi | 87% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 47,065 psi | 85% | 2733 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,572 psi | 86% | 2795 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 47,877 psi | 87% | 2733 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 49,153 psi | 89% | 2759 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,470 psi | 84% | 2805 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 33,011 psi | 60% | 2618 fps | 96.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,689 psi | 88% | 2782 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 46,992 psi | 85% | 2779 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 48,602 psi | 88% | 2858 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 49,414 psi | 90% | 2812 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% | 40,480 psi | 73% | 2552 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,976 psi | 80% | 2657 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,590 psi | 59% | 2470 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,305 psi | 71% | 2618 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 30,864 psi | 56% | 2457 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 31,198 psi | 57% | 2530 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 37,304 psi | 68% | 2575 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 31,792 psi | 58% | 2431 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,392 psi | 71% | 2589 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 38,363 psi | 70% | 2582 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,585 psi | 83% | 2782 fps | 99.7% |
| Alliant Power Pro 2000-MR | 43.3 gr | 80% | 33,707 psi | 61% | 2589 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,560 psi | 55% | 2448 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,166 psi | 84% | 2651 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,228 psi | 60% | 2507 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 33,040 psi | 60% | 2549 fps | 95.4% |
| Alliant Reloder-17 | 43.7 gr | 82% | 28,471 psi | 52% | 2457 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 29,573 psi | 54% | 2493 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,260 psi | 66% | 2572 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 29,675 psi | 54% | 2441 fps | 97.1% |
| Bofors RP7 | <<locked>> | 96% | 46,354 psi | 84% | 2717 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,524 psi | 75% | 2582 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,434 psi | 68% | 2608 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,249 psi | 75% | 2736 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 45,150 psi | 82% | 2687 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,730 psi | 83% | 2710 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 33,185 psi | 60% | 2500 fps | 95% |
| Hodgdon H414 | <<locked>> | 96% | 42,540 psi | 77% | 2746 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 37,565 psi | 68% | 2589 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 28,036 psi | 51% | 2392 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,504 psi | 61% | 2552 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,541 psi | 46% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,347 psi | 66% | 2546 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 36,376 psi | 66% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,257 psi | 60% | 2461 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 43,656 psi | 79% | 2635 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 42,844 psi | 78% | 2654 fps | 95.1% |
| IMR 4831 | <<locked>> | 92% | 32,837 psi | 60% | 2543 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 33,968 psi | 62% | 2539 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 39,392 psi | 71% | 2589 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 43,961 psi | 80% | 2667 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 35,375 psi | 64% | 2549 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 38,203 psi | 69% | 2520 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 32,822 psi | 60% | 2467 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 36,767 psi | 67% | 2549 fps | 95.2% |
| Lovex S070 | <<locked>> | 96% | 41,843 psi | 76% | 2674 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 36,390 psi | 66% | 2530 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 36,477 psi | 66% | 2543 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 32,590 psi | 59% | 2497 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 32,532 psi | 59% | 2539 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 32,227 psi | 58% | 2507 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 96% | 38,928 psi | 71% | 2680 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 39,334 psi | 71% | 2589 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,348 psi | 70% | 2608 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,641 psi | 77% | 2631 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,527 psi | 46% | 1542 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,309 psi | 80% | 2671 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 41,626 psi | 76% | 2644 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,156 psi | 62% | 2595 fps | 96.8% |
| ReloadSwiss RS 60 | 42.6 gr | 80% | 28,384 psi | 52% | 2467 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 33,823 psi | 61% | 2598 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 37,420 psi | 68% | 2671 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 40,074 psi | 73% | 2575 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 34,722 psi | 63% | 2487 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 28,036 psi | 51% | 2388 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 96% | 46,354 psi | 84% | 2717 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 36,767 psi | 67% | 2549 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,375 psi | 64% | 2549 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 32,822 psi | 60% | 2467 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 96% | 41,843 psi | 76% | 2674 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 29,399 psi | 53% | 2438 fps | 95.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,130 psi | 67% | 2556 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,839 psi | 65% | 2543 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,305 psi | 70% | 2493 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,328 psi | 57% | 2365 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 41,046 psi | 74% | 2595 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 42,163 psi | 77% | 2667 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 37,637 psi | 68% | 2497 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 36,898 psi | 67% | 2556 fps | 97.9% |
| Somchem S355 | <<locked>> | 80% | 29,182 psi | 53% | 2402 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 25,367 psi | 46% | 2375 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 43,569 psi | 79% | 2559 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,464 psi | 70% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,576 psi | 61% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,650 psi | 63% | 2484 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 27,717 psi | 50% | 2343 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 90% | 34,243 psi | 62% | 2539 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 39,102 psi | 71% | 2582 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 33,170 psi | 60% | 2474 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 33,330 psi | 60% | 2543 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 98% | 30,922 psi | 56% | 2562 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 28,631 psi | 52% | 2365 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 38,159 psi | 69% | 2625 fps | 99.7% |
| Winchester 760 | <<locked>> | 96% | 42,815 psi | 78% | 2753 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,983 psi | 63% | 2546 fps | 98.1% |
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 95 powders for 7.5 x 55 Swiss loaded with the .308 | 167gr | Peregrine Plainsmaster (VLR-4). ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,913 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,913 fps. Accurate 4350 gives the best case fill at 100 %, and 95 of the 95 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 167.0 gr projectile in 0.308" calls for a 1:11.0 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. 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 | 167gr | Peregrine Plainsmaster (VLR-4) 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.