Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 176gr | MRR Green Long Range bullet and 98 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% | 49,748 psi | 90% | 2608 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 47,892 psi | 87% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,705 psi | 90% | 2667 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 49,095 psi | 89% | 2690 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 47,761 psi | 87% | 2612 fps | 95.9% |
| Accurate 4064 | <<locked>> | 94% | 49,777 psi | 90% | 2713 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 45,208 psi | 82% | 2726 fps | 99% |
| ADI AR 2206H | <<locked>> | 88% | 48,805 psi | 89% | 2703 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 49,835 psi | 90% | 2703 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 48,196 psi | 87% | 2661 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 47,921 psi | 87% | 2638 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 49,516 psi | 90% | 2759 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 47,906 psi | 87% | 2808 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,907 psi | 89% | 2720 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,821 psi | 90% | 2615 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 49,763 psi | 90% | 2743 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 45,397 psi | 82% | 2740 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 49,153 psi | 89% | 2831 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 31,836 psi | 58% | 2487 fps | 97.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 48,225 psi | 88% | 2717 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 48,892 psi | 89% | 2733 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 47,065 psi | 85% | 2651 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 47,456 psi | 86% | 2602 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 49,748 psi | 90% | 2736 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 48,211 psi | 87% | 2776 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 48,704 psi | 88% | 2654 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 49,472 psi | 90% | 2680 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 47,268 psi | 86% | 2697 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 49,182 psi | 89% | 2782 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 88% | 49,197 psi | 89% | 2713 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,466 psi | 75% | 2621 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 47,776 psi | 87% | 2743 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 47,079 psi | 85% | 2759 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,563 psi | 63% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 47,645 psi | 86% | 2671 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 48,588 psi | 88% | 2700 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 49,472 psi | 90% | 2687 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 46,833 psi | 85% | 2612 fps | 96.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 46,920 psi | 85% | 2671 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 49,211 psi | 89% | 2687 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,410 psi | 79% | 2677 fps | 98.8% |
| IMR 4895 | <<locked>> | 90% | 47,761 psi | 87% | 2723 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 48,196 psi | 87% | 2661 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 47,616 psi | 86% | 2641 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 47,297 psi | 86% | 2674 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 49,255 psi | 89% | 2638 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 48,791 psi | 89% | 2684 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 47,776 psi | 87% | 2674 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 48,124 psi | 87% | 2703 fps | 97.3% |
| Norma 201 | <<locked>> | 88% | 47,674 psi | 87% | 2654 fps | 100% |
| Norma 202 | <<locked>> | 88% | 47,950 psi | 87% | 2657 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,907 psi | 89% | 2730 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 45,556 psi | 83% | 2726 fps | 99% |
| Ramshot Big Game | <<locked>> | 92% | 48,892 psi | 89% | 2753 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 44,846 psi | 81% | 2717 fps | 97.3% |
| Ramshot TAC | <<locked>> | 86% | 48,370 psi | 88% | 2671 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 47,485 psi | 86% | 2690 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 49,226 psi | 89% | 2661 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 63% | 1670 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 48,037 psi | 87% | 2644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,935 psi | 87% | 2677 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 49,458 psi | 90% | 2805 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 49,182 psi | 89% | 2838 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 45,237 psi | 82% | 2753 fps | 98.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 46,398 psi | 84% | 2776 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 86% | 48,602 psi | 88% | 2635 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 47,921 psi | 87% | 2648 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 48,414 psi | 88% | 2720 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 47,065 psi | 85% | 2651 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 47,776 psi | 87% | 2674 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 47,297 psi | 86% | 2674 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,791 psi | 89% | 2684 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 48,124 psi | 87% | 2703 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 47,427 psi | 86% | 2736 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 49,690 psi | 90% | 2697 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 47,195 psi | 86% | 2677 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 46,717 psi | 85% | 2552 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 49,559 psi | 90% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 47,703 psi | 87% | 2625 fps | 96.9% |
| Somchem S321 | <<locked>> | 84% | 48,965 psi | 89% | 2694 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 48,936 psi | 89% | 2598 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 49,240 psi | 89% | 2694 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 49,414 psi | 90% | 2723 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,538 psi | 74% | 2680 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 49,792 psi | 90% | 2566 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 46,862 psi | 85% | 2543 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 47,152 psi | 86% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 48,399 psi | 88% | 2635 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 47,543 psi | 86% | 2654 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,008 psi | 87% | 2720 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 86% | 48,544 psi | 88% | 2661 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 49,864 psi | 90% | 2684 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,021 psi | 85% | 2730 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 33,504 psi | 61% | 2552 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,385 psi | 90% | 2710 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 47,601 psi | 86% | 2703 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 49,472 psi | 90% | 2789 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 46,760 psi | 85% | 2687 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% | 41,220 psi | 75% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,802 psi | 81% | 2585 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,112 psi | 60% | 2402 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,827 psi | 72% | 2546 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 44,773 psi | 81% | 2562 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 31,372 psi | 57% | 2392 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 31,676 psi | 57% | 2464 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 37,884 psi | 69% | 2510 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 32,169 psi | 58% | 2365 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,929 psi | 72% | 2520 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 38,914 psi | 71% | 2507 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,267 psi | 84% | 2707 fps | 99.9% |
| Alliant Power Pro 2000-MR | 42 gr | 80% | 34,171 psi | 62% | 2526 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,038 psi | 56% | 2382 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,920 psi | 85% | 2575 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,750 psi | 61% | 2444 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 31,473 psi | 57% | 2434 fps | 95.2% |
| Alliant Reloder-17 | 41.3 gr | 80% | 26,919 psi | 49% | 2339 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 28,079 psi | 51% | 2382 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,782 psi | 67% | 2510 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 30,211 psi | 55% | 2382 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 44,063 psi | 80% | 2598 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,032 psi | 76% | 2513 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,985 psi | 69% | 2539 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,669 psi | 76% | 2664 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 45,498 psi | 83% | 2608 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,340 psi | 84% | 2635 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 33,620 psi | 61% | 2434 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 40,393 psi | 73% | 2628 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 38,130 psi | 69% | 2520 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 26,789 psi | 49% | 2287 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,953 psi | 62% | 2487 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 96% | 43,772 psi | 79% | 2700 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 47% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,898 psi | 67% | 2477 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 37,173 psi | 67% | 2516 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,707 psi | 61% | 2395 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 41,524 psi | 75% | 2516 fps | 95.3% |
| IMR 4350 | <<locked>> | 98% | 44,034 psi | 80% | 2621 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 40,944 psi | 74% | 2539 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 31,183 psi | 57% | 2428 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 34,519 psi | 63% | 2474 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 39,929 psi | 72% | 2520 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 44,556 psi | 81% | 2595 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 36,027 psi | 65% | 2484 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 38,624 psi | 70% | 2451 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 33,286 psi | 60% | 2402 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 35,027 psi | 64% | 2438 fps | 95% |
| Lovex S070 | <<locked>> | 94% | 39,871 psi | 72% | 2559 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 36,854 psi | 67% | 2461 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 36,999 psi | 67% | 2474 fps | 100% |
| Norma 203B | <<locked>> | 80% | 33,141 psi | 60% | 2434 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 31,038 psi | 56% | 2428 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 32,692 psi | 59% | 2444 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 37,086 psi | 67% | 2562 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 39,856 psi | 72% | 2520 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,899 psi | 71% | 2539 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,163 psi | 78% | 2562 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 47% | 1490 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,020 psi | 82% | 2598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 39,291 psi | 71% | 2520 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,838 psi | 63% | 2533 fps | 97.4% |
| ReloadSwiss RS 60 | 41.3 gr | 80% | 28,732 psi | 52% | 2408 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 32,082 psi | 58% | 2484 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 35,389 psi | 64% | 2549 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 40,509 psi | 74% | 2503 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 35,172 psi | 64% | 2418 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 28,500 psi | 52% | 2329 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 44,063 psi | 80% | 2598 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 35,027 psi | 64% | 2438 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,027 psi | 65% | 2484 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 33,286 psi | 60% | 2402 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 39,871 psi | 72% | 2559 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 29,936 psi | 54% | 2379 fps | 96.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,695 psi | 68% | 2490 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,463 psi | 66% | 2480 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,653 psi | 70% | 2421 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,633 psi | 57% | 2300 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 41,742 psi | 76% | 2530 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 42,757 psi | 78% | 2595 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 38,101 psi | 69% | 2428 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,420 psi | 68% | 2490 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 29,617 psi | 54% | 2339 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 24,120 psi | 44% | 2267 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 43,947 psi | 80% | 2484 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,841 psi | 70% | 2418 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,982 psi | 62% | 2402 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,157 psi | 64% | 2418 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 28,181 psi | 51% | 2283 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 88% | 32,460 psi | 59% | 2425 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 39,726 psi | 72% | 2513 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 33,533 psi | 61% | 2405 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 31,691 psi | 57% | 2431 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 29,370 psi | 53% | 2451 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 27,035 psi | 49% | 2254 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 38,667 psi | 70% | 2552 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 40,393 psi | 73% | 2628 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,447 psi | 64% | 2480 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 98 powders for 7.5 x 55 Swiss loaded with the .308 | 176gr | MRR Green Long Range. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,838 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,838 fps. Accurate 4350 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 176.0 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 | 176gr | MRR Green Long Range 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.