Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 180gr | Barnes MRX BT 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 Power Pro 2000-MR 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>> | 84% | 48,776 psi | 89% | 2579 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 49,414 psi | 90% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 48,341 psi | 88% | 2661 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 46,992 psi | 85% | 2592 fps | 96.3% |
| Accurate 4064 | <<locked>> | 92% | 49,139 psi | 89% | 2684 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,269 psi | 88% | 2759 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 48,037 psi | 87% | 2677 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 49,139 psi | 89% | 2677 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 47,427 psi | 86% | 2631 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 47,123 psi | 86% | 2605 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 46,905 psi | 85% | 2782 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 48,370 psi | 88% | 2697 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 48,936 psi | 89% | 2717 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,863 psi | 87% | 2772 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 48,544 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,504 psi | 61% | 2520 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 36,854 psi | 67% | 2657 fps | 97.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 47,355 psi | 86% | 2687 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 48,341 psi | 88% | 2710 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 49,385 psi | 90% | 2677 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 49,647 psi | 90% | 2621 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,240 psi | 89% | 2710 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 47,224 psi | 86% | 2746 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 49,806 psi | 90% | 2723 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 98% | 48,646 psi | 88% | 2762 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 94% | 47,050 psi | 85% | 2677 fps | 96% |
| Hodgdon H4895 | <<locked>> | 86% | 48,428 psi | 88% | 2687 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,005 psi | 80% | 2654 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 47,007 psi | 85% | 2717 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 49,588 psi | 90% | 2795 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,824 psi | 63% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 46,847 psi | 85% | 2644 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 47,688 psi | 87% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 48,573 psi | 88% | 2661 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,124 psi | 89% | 2641 fps | 97.6% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,095 psi | 89% | 2697 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 48,385 psi | 88% | 2664 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,180 psi | 84% | 2710 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 47,050 psi | 85% | 2697 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 47,427 psi | 86% | 2631 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 46,688 psi | 85% | 2648 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 48,370 psi | 88% | 2612 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 48,008 psi | 87% | 2654 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 47,108 psi | 85% | 2654 fps | 98.5% |
| Lovex S070 | <<locked>> | 98% | 47,703 psi | 87% | 2684 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 46,949 psi | 85% | 2628 fps | 100% |
| Norma 202 | <<locked>> | 86% | 47,253 psi | 86% | 2631 fps | 100% |
| Norma 203B | <<locked>> | 90% | 48,124 psi | 87% | 2703 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 49,763 psi | 90% | 2746 fps | 95.9% |
| Norma URPᴾ | <<locked>> | 100% | 48,312 psi | 88% | 2759 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 90% | 48,254 psi | 88% | 2726 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,543 psi | 86% | 2753 fps | 98.4% |
| Ramshot TAC | <<locked>> | 84% | 47,427 psi | 86% | 2648 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 46,688 psi | 85% | 2664 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 82% | 48,269 psi | 88% | 2635 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,056 psi | 64% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,253 psi | 86% | 2654 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 48,762 psi | 88% | 2779 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 48,399 psi | 88% | 2808 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,979 psi | 87% | 2785 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,965 psi | 89% | 2812 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 47,979 psi | 87% | 2608 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 47,181 psi | 86% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 48,225 psi | 88% | 2700 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 49,385 psi | 90% | 2677 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 47,108 psi | 85% | 2654 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 46,688 psi | 85% | 2648 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 48,008 psi | 87% | 2654 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 47,703 psi | 87% | 2684 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 46,876 psi | 85% | 2713 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 48,704 psi | 88% | 2671 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 49,676 psi | 90% | 2700 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 48,718 psi | 88% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 48,559 psi | 88% | 2569 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,210 psi | 86% | 2605 fps | 97.3% |
| Somchem S321 | <<locked>> | 82% | 48,124 psi | 87% | 2664 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 48,153 psi | 87% | 2572 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 48,312 psi | 88% | 2664 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 48,820 psi | 89% | 2697 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,757 psi | 78% | 2707 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 48,805 psi | 89% | 2536 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 48,936 psi | 89% | 2552 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 49,777 psi | 90% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 47,616 psi | 86% | 2608 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 47,239 psi | 86% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 47,630 psi | 86% | 2703 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 47,718 psi | 87% | 2631 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 48,907 psi | 89% | 2651 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,748 psi | 90% | 2759 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,592 psi | 65% | 2589 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 48,472 psi | 88% | 2687 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 46,920 psi | 85% | 2677 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 48,979 psi | 89% | 2769 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 29,805 psi | 54% | 2507 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 49,255 psi | 89% | 2710 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% | 43,105 psi | 78% | 2497 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,201 psi | 64% | 2421 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,177 psi | 77% | 2569 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 43,888 psi | 80% | 2539 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 33,359 psi | 61% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 29,370 psi | 53% | 2395 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 39,711 psi | 72% | 2533 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 33,823 psi | 61% | 2392 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,829 psi | 76% | 2539 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 41,017 psi | 74% | 2520 fps | 100% |
| Alliant Power Pro 2000-MR | 43.2 gr | 80% | 35,723 psi | 65% | 2556 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,866 psi | 60% | 2411 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,549 psi | 65% | 2470 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 31,082 psi | 56% | 2418 fps | 95.8% |
| Alliant Reloder-17 | 42.6 gr | 80% | 28,384 psi | 52% | 2379 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 26,208 psi | 48% | 2316 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 32,010 psi | 58% | 2536 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,740 psi | 70% | 2536 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 32,010 psi | 58% | 2408 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 40,814 psi | 74% | 2530 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,874 psi | 80% | 2530 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,871 psi | 72% | 2559 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,976 psi | 80% | 2690 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 80% | 33,330 psi | 60% | 2415 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 92% | 39,958 psi | 73% | 2608 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 92% | 44,164 psi | 80% | 2628 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,045 psi | 73% | 2543 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 26,382 psi | 48% | 2264 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,897 psi | 65% | 2516 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 94% | 43,120 psi | 78% | 2684 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,875 psi | 47% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,421 psi | 70% | 2497 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 39,160 psi | 71% | 2533 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,433 psi | 64% | 2421 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 82% | 40,567 psi | 74% | 2490 fps | 95.6% |
| IMR 4350 | <<locked>> | 94% | 40,756 psi | 74% | 2552 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 40,234 psi | 73% | 2516 fps | 95.5% |
| IMR 4831 | <<locked>> | 86% | 28,950 psi | 53% | 2359 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 36,390 psi | 66% | 2500 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 41,829 psi | 76% | 2539 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,043 psi | 69% | 2507 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 40,393 psi | 73% | 2474 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 35,085 psi | 64% | 2425 fps | 99.3% |
| Lovex S065 | <<locked>> | 86% | 34,621 psi | 63% | 2418 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 36,825 psi | 67% | 2487 fps | 95% |
| Norma 201 | <<locked>> | 80% | 38,754 psi | 70% | 2484 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 38,928 psi | 71% | 2493 fps | 100% |
| Norma 203B | <<locked>> | 80% | 34,911 psi | 63% | 2461 fps | 98.3% |
| Norma 204 | <<locked>> | 98% | 46,311 psi | 84% | 2690 fps | 95.1% |
| Norma URP | <<locked>> | 86% | 30,501 psi | 55% | 2402 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 34,258 psi | 62% | 2467 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 36,622 psi | 66% | 2546 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 41,510 psi | 75% | 2543 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,959 psi | 74% | 2566 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,179 psi | 82% | 2585 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,918 psi | 47% | 1490 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 36,318 psi | 66% | 2451 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,782 psi | 67% | 2562 fps | 98.4% |
| ReloadSwiss RS 60 | 42.6 gr | 80% | 30,298 psi | 55% | 2444 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 31,908 psi | 58% | 2467 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 34,882 psi | 63% | 2530 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 42,279 psi | 77% | 2516 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,782 psi | 67% | 2438 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 30,066 psi | 55% | 2356 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 40,814 psi | 74% | 2530 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 34,621 psi | 63% | 2418 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,043 psi | 69% | 2507 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 35,085 psi | 64% | 2425 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 36,825 psi | 67% | 2487 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,444 psi | 57% | 2408 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,436 psi | 72% | 2513 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,232 psi | 69% | 2503 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,596 psi | 74% | 2441 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,373 psi | 61% | 2320 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 38,334 psi | 70% | 2454 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 44,962 psi | 82% | 2615 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 39,958 psi | 73% | 2444 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,450 psi | 72% | 2516 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 31,285 psi | 57% | 2365 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 22,495 psi | 41% | 2201 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 46,064 psi | 84% | 2497 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,843 psi | 74% | 2434 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,042 psi | 65% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,767 psi | 67% | 2431 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,588 psi | 54% | 2306 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 30,081 psi | 55% | 2352 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 41,640 psi | 76% | 2533 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 35,462 psi | 64% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 31,357 psi | 57% | 2408 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 27,456 psi | 50% | 2385 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 26,658 psi | 48% | 2238 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 40,930 psi | 74% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 37,521 psi | 68% | 2559 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 96% | 26,223 psi | 48% | 2382 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,463 psi | 68% | 2507 fps | 99.2% |
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 111 powders for 7.5 x 55 Swiss loaded with the .308 | 180gr | Barnes MRX BT. Alliant Reloder-17 delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,812 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:11.5 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 Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for 7.5 x 55 Swiss with the .308 | 180gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.