Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 190gr | Nosler Custom Competition 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 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 2495 | <<locked>> | 86% | 48,211 psi | 87% | 2546 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 49,734 psi | 90% | 2605 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,514 psi | 86% | 2543 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 38,145 psi | 69% | 2503 fps | 97.3% |
| Accurate 4064 | <<locked>> | 88% | 48,298 psi | 88% | 2595 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 47,079 psi | 85% | 2671 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 49,008 psi | 89% | 2621 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 46,963 psi | 85% | 2579 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 46,586 psi | 85% | 2651 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 48,283 psi | 88% | 2575 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 48,472 psi | 88% | 2546 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 47,877 psi | 87% | 2730 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 45,977 psi | 83% | 2648 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 49,530 psi | 90% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 47,079 psi | 85% | 2615 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 49,008 psi | 89% | 2726 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 49,603 psi | 90% | 2756 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 45,295 psi | 82% | 2638 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,043 psi | 67% | 2539 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,017 psi | 74% | 2690 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 48,341 psi | 88% | 2638 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 49,835 psi | 90% | 2657 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 47,253 psi | 86% | 2582 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 46,905 psi | 85% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 47,529 psi | 86% | 2618 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 46,804 psi | 85% | 2671 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 47,906 psi | 87% | 2631 fps | 97% |
| Hodgdon H4895 | <<locked>> | 84% | 49,472 psi | 90% | 2631 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,414 psi | 88% | 2651 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 48,269 psi | 88% | 2661 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 47,007 psi | 85% | 2697 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,462 psi | 64% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 47,326 psi | 86% | 2585 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 49,023 psi | 89% | 2608 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 49,371 psi | 90% | 2605 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 49,676 psi | 90% | 2589 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 47,268 psi | 86% | 2608 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,066 psi | 89% | 2612 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 47,892 psi | 87% | 2664 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 48,225 psi | 88% | 2644 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 48,283 psi | 88% | 2575 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 48,153 psi | 87% | 2595 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 48,921 psi | 89% | 2552 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 49,168 psi | 89% | 2602 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 48,443 psi | 88% | 2608 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 48,849 psi | 89% | 2638 fps | 98.5% |
| Norma 201 | <<locked>> | 84% | 47,805 psi | 87% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 84% | 48,327 psi | 88% | 2572 fps | 100% |
| Norma 203B | <<locked>> | 88% | 49,240 psi | 89% | 2648 fps | 100% |
| Norma 204 | <<locked>> | 96% | 47,384 psi | 86% | 2651 fps | 96.3% |
| Norma MRPᴾ | <<locked>> | 100% | 41,365 psi | 75% | 2654 fps | 96.9% |
| Norma URP | <<locked>> | 96% | 46,586 psi | 85% | 2661 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 49,443 psi | 90% | 2674 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 48,530 psi | 88% | 2707 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 48,225 psi | 88% | 2595 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 47,674 psi | 87% | 2612 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,824 psi | 65% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 48,196 psi | 87% | 2605 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 46,746 psi | 85% | 2671 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 49,429 psi | 90% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 49,821 psi | 90% | 2740 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 46,775 psi | 85% | 2717 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 49,037 psi | 89% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 48,385 psi | 88% | 2569 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 49,690 psi | 90% | 2648 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 43,700 psi | 79% | 2618 fps | 96% |
| Rottweil R 907 | <<locked>> | 92% | 47,253 psi | 86% | 2582 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 48,443 psi | 88% | 2608 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 48,153 psi | 87% | 2595 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 49,168 psi | 89% | 2602 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 48,849 psi | 89% | 2638 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 48,037 psi | 87% | 2661 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 49,472 psi | 90% | 2615 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 47,369 psi | 86% | 2595 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 49,443 psi | 90% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 49,574 psi | 90% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,225 psi | 88% | 2559 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 43,337 psi | 79% | 2612 fps | 95.9% |
| Somchem S335 | <<locked>> | 84% | 48,805 psi | 89% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 49,269 psi | 89% | 2612 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 47,355 psi | 86% | 2605 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,645 psi | 86% | 2710 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 44,295 psi | 80% | 2602 fps | 97% |
| Vihtavuori N133 | <<locked>> | 84% | 49,661 psi | 90% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 47,906 psi | 87% | 2533 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 48,559 psi | 88% | 2549 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 48,341 psi | 88% | 2579 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 49,037 psi | 89% | 2657 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 48,269 psi | 88% | 2569 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 46,992 psi | 85% | 2552 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 47,906 psi | 87% | 2664 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,089 psi | 73% | 2608 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 49,168 psi | 89% | 2635 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 47,776 psi | 87% | 2615 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 47,094 psi | 85% | 2674 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,098 psi | 60% | 2556 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 46,760 psi | 85% | 2602 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 2495 | <<locked>> | 80% | 39,552 psi | 72% | 2418 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,485 psi | 84% | 2559 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 39,204 psi | 71% | 2395 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 33,417 psi | 61% | 2408 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 37,362 psi | 68% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 27,064 psi | 49% | 2267 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 43,120 psi | 78% | 2526 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,738 psi | 67% | 2392 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 98% | 43,540 psi | 79% | 2595 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,194 psi | 82% | 2526 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 45,397 psi | 82% | 2503 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,030 psi | 71% | 2566 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 43,250 psi | 78% | 2598 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,405 psi | 66% | 2418 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,899 psi | 71% | 2474 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 28,413 psi | 52% | 2287 fps | 95.5% |
| Alliant Reloder-17 | 43.2 gr | 80% | 31,169 psi | 57% | 2395 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 98% | 42,656 psi | 77% | 2592 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 24,497 psi | 44% | 2205 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 90% | 29,327 psi | 53% | 2408 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,337 psi | 77% | 2536 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 35,839 psi | 65% | 2421 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 39,363 psi | 71% | 2441 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,845 psi | 80% | 2552 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,622 psi | 66% | 2421 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 36,172 psi | 66% | 2467 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 42,206 psi | 77% | 2533 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 43,526 psi | 79% | 2536 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 25,875 psi | 47% | 2192 fps | 96.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,537 psi | 72% | 2516 fps | 99.9% |
| Hodgdon Superformance | 50.3 gr | 88% | 38,232 psi | 69% | 2530 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,353 psi | 48% | 1427 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,843 psi | 76% | 2493 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 43,033 psi | 78% | 2520 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,566 psi | 70% | 2421 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,017 psi | 74% | 2438 fps | 96.6% |
| IMR 4350 | <<locked>> | 90% | 39,233 psi | 71% | 2464 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 36,405 psi | 66% | 2379 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 26,774 psi | 49% | 2234 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 39,842 psi | 72% | 2500 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 45,194 psi | 82% | 2526 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,192 psi | 77% | 2503 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,410 psi | 79% | 2464 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 38,479 psi | 70% | 2425 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 31,546 psi | 57% | 2283 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 35,882 psi | 65% | 2402 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 42,279 psi | 77% | 2480 fps | 100% |
| Norma 202 | <<locked>> | 80% | 42,714 psi | 78% | 2487 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,290 psi | 69% | 2461 fps | 99.4% |
| Norma 204 | <<locked>> | 94% | 44,251 psi | 80% | 2595 fps | 95.6% |
| Norma MRP | <<locked>> | 96% | 36,158 psi | 66% | 2543 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 28,036 psi | 51% | 2274 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 37,695 psi | 68% | 2477 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 33,301 psi | 60% | 2408 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 45,223 psi | 82% | 2546 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,657 psi | 81% | 2562 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 49% | 1467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 37,217 psi | 68% | 2408 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,756 psi | 74% | 2572 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,170 psi | 60% | 2454 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 29,109 psi | 53% | 2336 fps | 95.6% |
| ReloadSwiss RS 70 | 46.1 gr | 84% | 31,444 psi | 57% | 2388 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 46,441 psi | 84% | 2510 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,219 psi | 73% | 2434 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 33,750 psi | 61% | 2372 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 98% | 41,031 psi | 74% | 2569 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 39,363 psi | 71% | 2441 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 31,546 psi | 57% | 2283 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,192 psi | 77% | 2503 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,479 psi | 70% | 2425 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 35,882 psi | 65% | 2402 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,693 psi | 63% | 2418 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,250 psi | 78% | 2516 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,756 psi | 76% | 2503 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,859 psi | 80% | 2425 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,390 psi | 66% | 2310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 37,144 psi | 67% | 2369 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 40,698 psi | 74% | 2562 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 43,279 psi | 79% | 2428 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,091 psi | 78% | 2513 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 34,548 psi | 63% | 2372 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 25,063 psi | 45% | 2231 fps | 97.6% |
| Somchem S385 | <<locked>> | 96% | 38,885 psi | 71% | 2503 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 44,135 psi | 80% | 2415 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,740 psi | 72% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,364 psi | 73% | 2425 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,924 psi | 60% | 2316 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 29,182 psi | 53% | 2270 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 45,353 psi | 82% | 2526 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 38,725 psi | 70% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 28,587 psi | 52% | 2277 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 25,817 psi | 47% | 2274 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,240 psi | 53% | 2254 fps | 97.8% |
| Winchester 748 | <<locked>> | 80% | 44,889 psi | 81% | 2572 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 36,172 psi | 66% | 2467 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 24,265 psi | 44% | 2267 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,118 psi | 75% | 2507 fps | 99.9% |
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 | Nosler Custom Competition. Alliant Reloder-17 delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,601 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 60–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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, Alliant Reloder-17 rank at the top here: for 7.5 x 55 Swiss with the .308 | 190gr | Nosler Custom Competition 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.