Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 168gr | Barnes TAC-X bullet and 95 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% | 47,108 psi | 85% | 2657 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 48,385 psi | 88% | 2723 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 47,123 psi | 86% | 2717 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 49,617 psi | 90% | 2782 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 48,298 psi | 88% | 2703 fps | 95.9% |
| Accurate 4064 | <<locked>> | 92% | 47,123 psi | 86% | 2759 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,093 psi | 84% | 2825 fps | 99% |
| ADI AR 2206H | <<locked>> | 88% | 49,443 psi | 90% | 2802 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 47,253 psi | 86% | 2746 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 86% | 48,675 psi | 88% | 2753 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 48,341 psi | 88% | 2730 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 48,356 psi | 88% | 2904 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 49,574 psi | 90% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 47,166 psi | 86% | 2785 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,963 psi | 83% | 2835 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 49,763 psi | 90% | 2930 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,082 psi | 58% | 2566 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 48,747 psi | 88% | 2808 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 49,443 psi | 90% | 2828 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 47,587 psi | 86% | 2743 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 47,790 psi | 87% | 2690 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 47,065 psi | 85% | 2779 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 48,631 psi | 88% | 2871 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 49,182 psi | 89% | 2749 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 47,819 psi | 87% | 2789 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,821 psi | 90% | 2881 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 46,601 psi | 85% | 2759 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,090 psi | 76% | 2717 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 48,385 psi | 88% | 2838 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 47,558 psi | 86% | 2851 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,534 psi | 63% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 47,993 psi | 87% | 2762 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 48,878 psi | 89% | 2789 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 49,719 psi | 90% | 2776 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,369 psi | 86% | 2703 fps | 96.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 47,384 psi | 86% | 2762 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 49,661 psi | 90% | 2779 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,932 psi | 80% | 2769 fps | 98.7% |
| IMR 4895 | <<locked>> | 90% | 48,312 psi | 88% | 2818 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 48,675 psi | 88% | 2753 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 48,283 psi | 88% | 2736 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 48,182 psi | 87% | 2772 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 49,734 psi | 90% | 2730 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 49,066 psi | 89% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 48,211 psi | 87% | 2766 fps | 98.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,704 psi | 88% | 2795 fps | 97.3% |
| Norma 201 | <<locked>> | 88% | 48,138 psi | 87% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 88% | 48,414 psi | 88% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 92% | 49,356 psi | 90% | 2822 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 46,108 psi | 84% | 2822 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 92% | 49,487 psi | 90% | 2848 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,658 psi | 83% | 2815 fps | 97.4% |
| Ramshot TAC | <<locked>> | 86% | 48,979 psi | 89% | 2766 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 48,196 psi | 87% | 2789 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 49,690 psi | 90% | 2753 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,708 psi | 63% | 1732 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 48,356 psi | 88% | 2736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 48,399 psi | 88% | 2766 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 46,688 psi | 85% | 2848 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 49,647 psi | 90% | 2933 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,774 psi | 83% | 2844 fps | 98.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,021 psi | 85% | 2871 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 86% | 49,081 psi | 89% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 48,399 psi | 88% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 49,313 psi | 89% | 2815 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 47,587 psi | 86% | 2743 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 48,211 psi | 87% | 2766 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 48,182 psi | 87% | 2772 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 49,066 psi | 89% | 2772 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,704 psi | 88% | 2795 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 48,109 psi | 87% | 2831 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 46,905 psi | 85% | 2740 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 47,950 psi | 87% | 2772 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 47,166 psi | 86% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 49,835 psi | 90% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 48,356 psi | 88% | 2717 fps | 96.9% |
| Somchem S321 | <<locked>> | 84% | 49,472 psi | 90% | 2785 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 49,400 psi | 90% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 49,763 psi | 90% | 2785 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 46,934 psi | 85% | 2769 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,002 psi | 74% | 2772 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 47,384 psi | 86% | 2618 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 47,297 psi | 86% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 47,718 psi | 87% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 48,979 psi | 89% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 48,399 psi | 88% | 2753 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,820 psi | 89% | 2818 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 86% | 49,008 psi | 89% | 2753 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 47,152 psi | 86% | 2726 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,703 psi | 87% | 2825 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,011 psi | 62% | 2641 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 46,659 psi | 85% | 2753 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 48,167 psi | 87% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 46,760 psi | 85% | 2828 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 47,123 psi | 86% | 2776 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% | 41,423 psi | 75% | 2569 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,121 psi | 82% | 2674 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,518 psi | 61% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,408 psi | 73% | 2635 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 45,092 psi | 82% | 2651 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 31,720 psi | 58% | 2477 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 32,155 psi | 58% | 2552 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 38,087 psi | 69% | 2592 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 32,489 psi | 59% | 2448 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,176 psi | 73% | 2605 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 39,378 psi | 71% | 2595 fps | 100% |
| Alliant Power Pro 2000-MR | 44 gr | 80% | 34,330 psi | 62% | 2608 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,560 psi | 57% | 2470 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,982 psi | 62% | 2526 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 31,821 psi | 58% | 2520 fps | 95.2% |
| Alliant Reloder-17 | 43.4 gr | 80% | 27,282 psi | 50% | 2425 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 28,427 psi | 52% | 2461 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,159 psi | 67% | 2595 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 30,618 psi | 56% | 2464 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 44,715 psi | 81% | 2690 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,337 psi | 77% | 2598 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,232 psi | 69% | 2621 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,322 psi | 77% | 2759 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 46,093 psi | 84% | 2700 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 34,113 psi | 62% | 2523 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 40,770 psi | 74% | 2713 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 38,377 psi | 70% | 2605 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 27,035 psi | 49% | 2362 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,447 psi | 63% | 2575 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 44,353 psi | 80% | 2792 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,527 psi | 46% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,101 psi | 67% | 2562 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 37,333 psi | 68% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,040 psi | 62% | 2480 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 41,713 psi | 76% | 2602 fps | 95.1% |
| IMR 4350 | <<locked>> | 98% | 44,556 psi | 81% | 2713 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 44,034 psi | 80% | 2680 fps | 95.7% |
| IMR 4831 | <<locked>> | 90% | 31,618 psi | 57% | 2513 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 34,766 psi | 63% | 2556 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 40,176 psi | 73% | 2605 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 44,788 psi | 81% | 2680 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 36,448 psi | 66% | 2572 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 38,943 psi | 71% | 2536 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 33,605 psi | 61% | 2484 fps | 98.5% |
| Lovex S065 | <<locked>> | 90% | 37,652 psi | 68% | 2569 fps | 95.7% |
| Lovex S070 | <<locked>> | 94% | 40,161 psi | 73% | 2641 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 37,173 psi | 67% | 2546 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 37,536 psi | 68% | 2562 fps | 100% |
| Norma 203B | <<locked>> | 80% | 33,344 psi | 61% | 2516 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 31,314 psi | 57% | 2507 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 32,880 psi | 60% | 2523 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 37,579 psi | 68% | 2654 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 40,234 psi | 73% | 2608 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,320 psi | 71% | 2628 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,584 psi | 79% | 2651 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,788 psi | 47% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,150 psi | 82% | 2684 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 39,726 psi | 72% | 2608 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,172 psi | 64% | 2621 fps | 97.4% |
| ReloadSwiss RS 60 | 43.4 gr | 80% | 29,109 psi | 53% | 2493 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 32,474 psi | 59% | 2569 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 35,839 psi | 65% | 2635 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 40,973 psi | 74% | 2592 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,520 psi | 64% | 2503 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 28,790 psi | 52% | 2408 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 44,715 psi | 81% | 2690 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 37,652 psi | 68% | 2569 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,448 psi | 66% | 2572 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 33,605 psi | 61% | 2484 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 40,161 psi | 73% | 2641 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,226 psi | 55% | 2461 fps | 96% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,869 psi | 69% | 2569 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,811 psi | 67% | 2566 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,131 psi | 71% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,053 psi | 58% | 2382 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 42,279 psi | 77% | 2618 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 43,192 psi | 78% | 2684 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 38,406 psi | 70% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,840 psi | 69% | 2575 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 29,892 psi | 54% | 2418 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 24,497 psi | 44% | 2349 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 44,454 psi | 81% | 2572 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,320 psi | 71% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,461 psi | 63% | 2490 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,462 psi | 64% | 2500 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 28,398 psi | 52% | 2362 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 32,924 psi | 60% | 2510 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 40,161 psi | 73% | 2602 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 33,910 psi | 62% | 2487 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 32,082 psi | 58% | 2513 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 96% | 29,747 psi | 54% | 2533 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 27,383 psi | 50% | 2333 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 39,233 psi | 71% | 2644 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 41,002 psi | 74% | 2720 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,926 psi | 65% | 2569 fps | 98.5% |
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 | Barnes TAC-X. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,693 fps to 2,933 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 52–90 %, 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 | Barnes TAC-X 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.