Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 190gr | Berger VLD Target bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and ReloadSwiss RS 60.
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>> | 82% | 49,690 psi | 90% | 2510 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 47,732 psi | 87% | 2536 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 49,255 psi | 89% | 2595 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,166 psi | 86% | 2530 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 37,797 psi | 69% | 2493 fps | 97.1% |
| Accurate 4064 | <<locked>> | 88% | 47,790 psi | 87% | 2582 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 46,340 psi | 84% | 2654 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 48,559 psi | 88% | 2612 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 49,472 psi | 90% | 2612 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 46,064 psi | 84% | 2635 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 47,848 psi | 87% | 2566 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 47,906 psi | 87% | 2536 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 47,456 psi | 86% | 2720 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 49,110 psi | 89% | 2631 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 49,588 psi | 90% | 2651 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 48,675 psi | 88% | 2713 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 49,226 psi | 89% | 2746 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 45,005 psi | 82% | 2628 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,811 psi | 67% | 2533 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,582 psi | 74% | 2677 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 47,935 psi | 87% | 2625 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 49,385 psi | 90% | 2648 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 46,876 psi | 85% | 2572 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 49,516 psi | 90% | 2543 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 49,690 psi | 90% | 2638 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 47,152 psi | 86% | 2608 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 96% | 49,472 psi | 90% | 2707 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 92% | 47,572 psi | 86% | 2621 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 84% | 48,979 psi | 89% | 2621 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,718 psi | 87% | 2638 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 47,848 psi | 87% | 2651 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 46,514 psi | 84% | 2684 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,302 psi | 64% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 47,195 psi | 86% | 2579 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 48,805 psi | 89% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 48,979 psi | 89% | 2592 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,298 psi | 89% | 2575 fps | 98.2% |
| IMR 4350 | <<locked>> | 98% | 49,864 psi | 90% | 2644 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 48,675 psi | 88% | 2602 fps | 98.1% |
| IMR 4831 | <<locked>> | 98% | 47,239 psi | 86% | 2651 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 47,790 psi | 87% | 2631 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 47,848 psi | 87% | 2566 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 47,674 psi | 87% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 48,501 psi | 88% | 2543 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 48,704 psi | 88% | 2592 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 48,037 psi | 87% | 2598 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 48,486 psi | 88% | 2628 fps | 98.4% |
| Norma 201 | <<locked>> | 84% | 47,645 psi | 86% | 2562 fps | 100% |
| Norma 202 | <<locked>> | 84% | 47,877 psi | 87% | 2562 fps | 100% |
| Norma 203B | <<locked>> | 88% | 48,805 psi | 89% | 2638 fps | 100% |
| Norma 204 | <<locked>> | 96% | 46,775 psi | 85% | 2635 fps | 96.1% |
| Norma MRPᴾ | <<locked>> | 100% | 40,843 psi | 74% | 2638 fps | 96.6% |
| Norma URP | <<locked>> | 98% | 49,182 psi | 89% | 2697 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 49,023 psi | 89% | 2664 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 48,240 psi | 88% | 2697 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 47,848 psi | 87% | 2582 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 47,268 psi | 86% | 2602 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,650 psi | 65% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 47,805 psi | 87% | 2595 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 49,719 psi | 90% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 49,066 psi | 89% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 49,472 psi | 90% | 2733 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 49,487 psi | 90% | 2756 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 48,849 psi | 89% | 2543 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 48,196 psi | 87% | 2559 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 49,284 psi | 89% | 2638 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 43,381 psi | 79% | 2605 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 92% | 46,876 psi | 85% | 2572 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 48,037 psi | 87% | 2598 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 47,674 psi | 87% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 48,704 psi | 88% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 48,486 psi | 88% | 2628 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 47,601 psi | 86% | 2651 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 49,095 psi | 89% | 2605 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 46,949 psi | 85% | 2585 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 49,269 psi | 89% | 2500 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 49,124 psi | 89% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,848 psi | 87% | 2549 fps | 98% |
| Somchem S335 | <<locked>> | 84% | 48,646 psi | 88% | 2503 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 48,892 psi | 89% | 2602 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 46,934 psi | 85% | 2595 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,949 psi | 85% | 2697 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 43,758 psi | 79% | 2589 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 49,458 psi | 90% | 2487 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 47,413 psi | 86% | 2523 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 48,167 psi | 87% | 2539 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 47,892 psi | 87% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 48,356 psi | 88% | 2641 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 47,834 psi | 87% | 2559 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 49,516 psi | 90% | 2585 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 47,601 psi | 86% | 2654 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,697 psi | 72% | 2598 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 48,921 psi | 89% | 2625 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 47,340 psi | 86% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 49,748 psi | 90% | 2710 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,677 psi | 59% | 2539 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 49,617 psi | 90% | 2638 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% | 46,659 psi | 85% | 2470 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,320 psi | 71% | 2411 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,992 psi | 83% | 2549 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 41,510 psi | 75% | 2434 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 32,866 psi | 60% | 2395 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 37,173 psi | 67% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 26,861 psi | 49% | 2257 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 42,946 psi | 78% | 2520 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,579 psi | 66% | 2385 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 98% | 43,279 psi | 79% | 2585 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,020 psi | 82% | 2520 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 44,802 psi | 81% | 2493 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,696 psi | 70% | 2552 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,955 psi | 65% | 2405 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,725 psi | 70% | 2464 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 28,094 psi | 51% | 2270 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,024 psi | 56% | 2388 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 98% | 42,380 psi | 77% | 2579 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 88% | 25,701 psi | 47% | 2241 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 30,893 psi | 56% | 2448 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,930 psi | 76% | 2526 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 35,389 psi | 64% | 2408 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 38,972 psi | 71% | 2428 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,644 psi | 85% | 2500 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,395 psi | 79% | 2543 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,492 psi | 66% | 2415 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 35,839 psi | 65% | 2457 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 88% | 41,829 psi | 76% | 2520 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 43,352 psi | 79% | 2530 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 25,570 psi | 46% | 2178 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,117 psi | 71% | 2507 fps | 99.9% |
| Hodgdon Superformance | 49.8 gr | 88% | 37,768 psi | 69% | 2513 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,382 psi | 48% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,423 psi | 75% | 2480 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 42,772 psi | 78% | 2513 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,377 psi | 70% | 2411 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,886 psi | 74% | 2431 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 38,914 psi | 71% | 2454 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 38,290 psi | 69% | 2415 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 28,195 psi | 51% | 2270 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 39,668 psi | 72% | 2493 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 45,020 psi | 82% | 2520 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,742 psi | 76% | 2493 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,221 psi | 78% | 2457 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 38,290 psi | 69% | 2418 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 31,401 psi | 57% | 2274 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 35,505 psi | 64% | 2388 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 42,090 psi | 76% | 2470 fps | 100% |
| Norma 202 | <<locked>> | 80% | 42,264 psi | 77% | 2474 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,116 psi | 69% | 2454 fps | 99.4% |
| Norma 204 | <<locked>> | 94% | 43,990 psi | 80% | 2585 fps | 95.4% |
| Norma MRP | <<locked>> | 98% | 38,189 psi | 69% | 2582 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 27,717 psi | 50% | 2260 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 37,304 psi | 68% | 2464 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 32,982 psi | 60% | 2398 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 44,846 psi | 81% | 2533 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,237 psi | 80% | 2552 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 48% | 1457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 36,825 psi | 67% | 2395 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,292 psi | 73% | 2559 fps | 99.4% |
| ReloadSwiss RS 60 | 42.9 gr | 80% | 33,054 psi | 60% | 2448 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 28,790 psi | 52% | 2323 fps | 95.4% |
| ReloadSwiss RS 70 | 45.7 gr | 84% | 31,198 psi | 57% | 2379 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,919 psi | 83% | 2497 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,030 psi | 73% | 2428 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 33,344 psi | 61% | 2359 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 40,712 psi | 74% | 2556 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 38,972 psi | 71% | 2428 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 31,401 psi | 57% | 2274 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,742 psi | 76% | 2493 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,290 psi | 69% | 2418 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 35,505 psi | 64% | 2388 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,316 psi | 62% | 2408 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,844 psi | 78% | 2507 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,307 psi | 75% | 2490 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,395 psi | 79% | 2415 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,955 psi | 65% | 2300 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 36,782 psi | 67% | 2359 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 43,105 psi | 78% | 2421 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,743 psi | 78% | 2503 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 34,374 psi | 62% | 2365 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 24,787 psi | 45% | 2218 fps | 97.4% |
| Somchem S385 | <<locked>> | 96% | 38,537 psi | 70% | 2493 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 43,656 psi | 79% | 2405 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,233 psi | 71% | 2402 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,943 psi | 72% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,532 psi | 59% | 2303 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 29,051 psi | 53% | 2264 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 44,918 psi | 82% | 2513 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 38,551 psi | 70% | 2415 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 28,456 psi | 52% | 2270 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 25,541 psi | 46% | 2260 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,022 psi | 53% | 2244 fps | 97.7% |
| Winchester 748 | <<locked>> | 80% | 44,411 psi | 81% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 35,839 psi | 65% | 2457 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 90% | 24,091 psi | 44% | 2254 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,727 psi | 74% | 2497 fps | 99.8% |
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 | 190gr | Berger VLD Target. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,756 fps. Accurate 3100 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 59–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 70, Hodgdon Superformance, ReloadSwiss RS 60 rank at the top here: for 7.5 x 55 Swiss with the .308 | 190gr | Berger VLD Target 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.