Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 200gr | Swift A-Frame 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 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 84% | 47,282 psi | 86% | 2464 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,152 psi | 86% | 2470 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 40,292 psi | 73% | 2480 fps | 98.3% |
| Accurate 4064 | <<locked>> | 86% | 47,413 psi | 86% | 2510 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 49,530 psi | 90% | 2638 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 47,863 psi | 87% | 2536 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 48,675 psi | 88% | 2539 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 48,530 psi | 88% | 2621 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 46,586 psi | 85% | 2641 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 48,544 psi | 88% | 2556 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 48,950 psi | 89% | 2575 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 48,095 psi | 87% | 2644 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 48,472 psi | 88% | 2671 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 47,239 psi | 86% | 2612 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 41,249 psi | 75% | 2556 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,769 psi | 70% | 2513 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 34,461 psi | 63% | 2431 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,149 psi | 78% | 2671 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 47,079 psi | 85% | 2549 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 48,892 psi | 89% | 2572 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 41,249 psi | 75% | 2556 fps | 96% |
| Bofors RP7 | <<locked>> | 92% | 49,066 psi | 89% | 2549 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 48,834 psi | 89% | 2559 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 49,501 psi | 90% | 2582 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 48,979 psi | 89% | 2638 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 90% | 46,963 psi | 85% | 2552 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 48,298 psi | 88% | 2546 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 47,558 psi | 86% | 2572 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 47,065 psi | 85% | 2572 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 49,124 psi | 89% | 2671 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 64% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 49,385 psi | 90% | 2546 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 48,211 psi | 87% | 2523 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 48,167 psi | 87% | 2520 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 48,138 psi | 87% | 2500 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 49,226 psi | 89% | 2575 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,921 psi | 87% | 2530 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 47,166 psi | 86% | 2585 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 47,224 psi | 86% | 2559 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 47,181 psi | 86% | 2510 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 47,601 psi | 86% | 2467 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 48,080 psi | 87% | 2516 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 47,442 psi | 86% | 2530 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 47,935 psi | 87% | 2559 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 33,504 psi | 61% | 2352 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 46,934 psi | 85% | 2487 fps | 100% |
| Norma 202 | <<locked>> | 82% | 47,181 psi | 86% | 2484 fps | 100% |
| Norma 203B | <<locked>> | 86% | 48,240 psi | 88% | 2566 fps | 100% |
| Norma 204 | <<locked>> | 96% | 49,429 psi | 90% | 2621 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 43,323 psi | 79% | 2631 fps | 98% |
| Norma URP | <<locked>> | 96% | 48,791 psi | 89% | 2628 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 48,254 psi | 88% | 2589 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 47,761 psi | 87% | 2628 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 49,545 psi | 90% | 2572 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,172 psi | 66% | 1601 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 46,891 psi | 85% | 2523 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 48,994 psi | 89% | 2635 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 48,544 psi | 88% | 2671 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 48,878 psi | 89% | 2657 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 48,849 psi | 89% | 2687 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 47,471 psi | 86% | 2487 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 48,733 psi | 88% | 2566 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 47,036 psi | 85% | 2546 fps | 95.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 45,759 psi | 83% | 2592 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 49,066 psi | 89% | 2549 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 47,442 psi | 86% | 2530 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 47,181 psi | 86% | 2510 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 48,080 psi | 87% | 2516 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 47,935 psi | 87% | 2559 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 46,905 psi | 85% | 2575 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 48,109 psi | 87% | 2530 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 49,182 psi | 89% | 2556 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 48,269 psi | 88% | 2425 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 48,269 psi | 88% | 2428 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 47,152 psi | 86% | 2480 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 45,353 psi | 82% | 2585 fps | 97% |
| Somchem S335 | <<locked>> | 82% | 47,848 psi | 87% | 2428 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 47,964 psi | 87% | 2523 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 49,327 psi | 90% | 2566 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 46,644 psi | 85% | 2625 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 46,499 psi | 84% | 2575 fps | 98% |
| Unknown powder | <<locked>> | 94% | 49,777 psi | 90% | 2631 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 82% | 48,602 psi | 88% | 2408 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 49,850 psi | 90% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 47,471 psi | 86% | 2464 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 47,326 psi | 86% | 2500 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 47,892 psi | 87% | 2572 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 40,176 psi | 73% | 2448 fps | 96% |
| Vihtavuori N540 | <<locked>> | 86% | 48,820 psi | 89% | 2510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 47,137 psi | 86% | 2585 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,380 psi | 77% | 2579 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 47,964 psi | 87% | 2552 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 49,792 psi | 90% | 2572 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 49,298 psi | 89% | 2644 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,621 psi | 63% | 2543 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 48,718 psi | 88% | 2559 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 43,743 psi | 79% | 2513 fps | 96.2% |
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% | 41,336 psi | 75% | 2379 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 36,434 psi | 66% | 2280 fps | 95% |
| Accurate 3100 | <<locked>> | 92% | 30,748 psi | 56% | 2290 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 39,059 psi | 71% | 2382 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 28,500 psi | 52% | 2244 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 80% | 44,759 psi | 81% | 2487 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 38,101 psi | 69% | 2359 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 40,103 psi | 73% | 2474 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,683 psi | 74% | 2536 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,884 psi | 69% | 2382 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,509 psi | 74% | 2438 fps | 99.7% |
| Alliant Reloder-16 | 40.1 gr | 80% | 29,501 psi | 54% | 2264 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,663 psi | 59% | 2375 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 39,189 psi | 71% | 2464 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 38,580 psi | 70% | 2503 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 24,062 psi | 44% | 2142 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 30,472 psi | 55% | 2329 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 88% | 28,761 psi | 52% | 2339 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,063 psi | 80% | 2503 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 37,463 psi | 68% | 2388 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 38,580 psi | 70% | 2503 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 36,172 psi | 66% | 2316 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,643 psi | 83% | 2513 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,159 psi | 69% | 2392 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 33,170 psi | 60% | 2343 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 84% | 38,870 psi | 71% | 2408 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 45,150 psi | 82% | 2497 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,977 psi | 49% | 2169 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,278 psi | 75% | 2480 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 37,144 psi | 67% | 2451 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 48% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,439 psi | 79% | 2454 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 45,165 psi | 82% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,016 psi | 73% | 2385 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,438 psi | 77% | 2405 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 36,187 psi | 66% | 2346 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 35,491 psi | 64% | 2303 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 28,050 psi | 51% | 2215 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 41,481 psi | 75% | 2464 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 44,005 psi | 80% | 2464 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,802 psi | 81% | 2425 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 39,987 psi | 73% | 2388 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 32,808 psi | 60% | 2254 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 33,083 psi | 60% | 2280 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 29,559 psi | 54% | 2264 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,845 psi | 80% | 2438 fps | 100% |
| Norma 202 | <<locked>> | 80% | 44,353 psi | 80% | 2444 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,856 psi | 72% | 2428 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 40,538 psi | 74% | 2467 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 35,418 psi | 64% | 2470 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 29,283 psi | 53% | 2251 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 39,334 psi | 71% | 2444 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 32,518 psi | 59% | 2336 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,398 psi | 84% | 2523 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,803 psi | 49% | 1427 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,667 psi | 70% | 2379 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,757 psi | 78% | 2536 fps | 99.9% |
| ReloadSwiss RS 60 | 43.2 gr | 80% | 34,751 psi | 63% | 2428 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 28,471 psi | 52% | 2260 fps | 96.1% |
| ReloadSwiss RS 70 | 43.8 gr | 80% | 28,732 psi | 52% | 2260 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 41,974 psi | 76% | 2402 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 35,273 psi | 64% | 2339 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 44,208 psi | 80% | 2500 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 37,898 psi | 69% | 2448 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 36,172 psi | 66% | 2316 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 32,808 psi | 60% | 2254 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,005 psi | 80% | 2464 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,987 psi | 73% | 2388 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 33,083 psi | 60% | 2280 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,158 psi | 66% | 2388 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,976 psi | 82% | 2480 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,337 psi | 79% | 2464 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,324 psi | 82% | 2382 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,753 psi | 69% | 2270 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 34,098 psi | 62% | 2251 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 39,972 psi | 73% | 2490 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 44,817 psi | 81% | 2385 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,889 psi | 81% | 2477 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,984 psi | 65% | 2339 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 26,165 psi | 47% | 2211 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 35,781 psi | 65% | 2385 fps | 95.4% |
| Unknown powder | <<locked>> | 80% | 31,705 psi | 58% | 2297 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 80% | 45,643 psi | 83% | 2369 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,394 psi | 75% | 2369 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,930 psi | 76% | 2382 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,301 psi | 62% | 2283 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 30,429 psi | 55% | 2244 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 98% | 37,811 psi | 69% | 2405 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 40,219 psi | 73% | 2382 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 29,907 psi | 54% | 2254 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 23,830 psi | 43% | 2156 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,414 psi | 55% | 2228 fps | 98.7% |
| Winchester 748 | <<locked>> | 80% | 46,760 psi | 85% | 2530 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 33,170 psi | 60% | 2343 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 22,495 psi | 41% | 2152 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,844 psi | 78% | 2470 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 41,060 psi | 75% | 2467 fps | 95.5% |
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 111 powders for 7.5 x 55 Swiss loaded with the .308 | 200gr | Swift A-Frame. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,687 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,687 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 60–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 7.5 x 55 Swiss with the .308 | 200gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.