Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 200gr | Peregrine VRG-3 bullet and 99 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% | 47,834 psi | 87% | 2477 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 49,850 psi | 90% | 2539 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 47,718 psi | 87% | 2484 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 38,392 psi | 70% | 2451 fps | 97.8% |
| Accurate 4064 | <<locked>> | 88% | 48,095 psi | 87% | 2526 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 47,123 psi | 86% | 2608 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 49,081 psi | 89% | 2559 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 47,137 psi | 86% | 2516 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 46,847 psi | 85% | 2595 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 48,385 psi | 88% | 2510 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 48,602 psi | 88% | 2477 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 48,283 psi | 88% | 2671 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 49,821 psi | 90% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 47,195 psi | 86% | 2552 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 49,269 psi | 89% | 2664 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 46,818 psi | 85% | 2648 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 45,774 psi | 83% | 2589 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,231 psi | 68% | 2487 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 32,866 psi | 60% | 2395 fps | 96.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,278 psi | 75% | 2638 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 48,689 psi | 88% | 2575 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 46,572 psi | 85% | 2543 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 47,398 psi | 86% | 2523 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 82% | 47,021 psi | 85% | 2536 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 47,747 psi | 87% | 2559 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 47,355 psi | 86% | 2615 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 92% | 48,370 psi | 88% | 2575 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 49,574 psi | 90% | 2566 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,704 psi | 88% | 2592 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 48,646 psi | 88% | 2598 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 47,355 psi | 86% | 2641 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,186 psi | 64% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 47,819 psi | 87% | 2526 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 49,472 psi | 90% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 49,588 psi | 90% | 2543 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,615 psi | 85% | 2477 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 47,732 psi | 87% | 2552 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,371 psi | 90% | 2556 fps | 98.7% |
| IMR 4831 | <<locked>> | 98% | 48,095 psi | 87% | 2602 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 48,399 psi | 88% | 2579 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 48,385 psi | 88% | 2510 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 48,225 psi | 88% | 2530 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 49,313 psi | 89% | 2493 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 49,240 psi | 89% | 2536 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 48,675 psi | 88% | 2549 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 49,139 psi | 89% | 2582 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 31,647 psi | 57% | 2320 fps | 95.9% |
| Norma 201 | <<locked>> | 84% | 47,979 psi | 87% | 2507 fps | 100% |
| Norma 202 | <<locked>> | 84% | 48,399 psi | 88% | 2507 fps | 100% |
| Norma 203B | <<locked>> | 88% | 49,792 psi | 90% | 2589 fps | 100% |
| Norma 204 | <<locked>> | 96% | 47,630 psi | 86% | 2592 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 41,510 psi | 75% | 2598 fps | 97.5% |
| Norma URP | <<locked>> | 96% | 47,050 psi | 85% | 2602 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 46,615 psi | 85% | 2566 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 49,211 psi | 89% | 2651 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 48,428 psi | 88% | 2536 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 47,935 psi | 87% | 2549 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 65% | 1591 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 48,457 psi | 88% | 2549 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 47,108 psi | 85% | 2608 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 46,630 psi | 85% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 47,065 psi | 85% | 2635 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 47,079 psi | 85% | 2657 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 48,878 psi | 89% | 2484 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 48,530 psi | 88% | 2507 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 46,760 psi | 85% | 2539 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 48,269 psi | 88% | 2566 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 44,179 psi | 80% | 2566 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 47,398 psi | 86% | 2523 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 94% | 48,675 psi | 88% | 2549 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 48,225 psi | 88% | 2530 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 49,240 psi | 89% | 2536 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 49,139 psi | 89% | 2582 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 48,472 psi | 88% | 2602 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 49,676 psi | 90% | 2556 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 47,558 psi | 86% | 2533 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 49,705 psi | 90% | 2444 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 49,777 psi | 90% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,515 psi | 88% | 2503 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 43,787 psi | 79% | 2562 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 49,052 psi | 89% | 2448 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 49,617 psi | 90% | 2549 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 47,471 psi | 86% | 2539 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,964 psi | 87% | 2648 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 44,527 psi | 81% | 2546 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 46,920 psi | 85% | 2388 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 48,211 psi | 87% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 49,052 psi | 89% | 2487 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 48,602 psi | 88% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 49,327 psi | 90% | 2595 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 48,689 psi | 88% | 2510 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 47,137 psi | 86% | 2490 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 48,428 psi | 88% | 2605 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,422 psi | 73% | 2552 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 49,472 psi | 90% | 2572 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 48,341 psi | 88% | 2556 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 47,355 psi | 86% | 2615 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,996 psi | 60% | 2503 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 47,007 psi | 85% | 2539 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% | 39,146 psi | 71% | 2352 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,412 psi | 84% | 2493 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 39,305 psi | 71% | 2343 fps | 95.8% |
| Accurate 3100 | <<locked>> | 94% | 30,980 psi | 56% | 2303 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 37,043 psi | 67% | 2356 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 26,876 psi | 49% | 2211 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 43,323 psi | 79% | 2467 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 36,825 psi | 67% | 2336 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 41,234 psi | 75% | 2493 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,426 psi | 82% | 2467 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 45,701 psi | 83% | 2441 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,102 psi | 71% | 2507 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,187 psi | 66% | 2356 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,001 psi | 71% | 2415 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 28,108 psi | 51% | 2228 fps | 96.1% |
| Alliant Reloder-17 | 42.7 gr | 80% | 31,183 psi | 57% | 2343 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 40,205 psi | 73% | 2487 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 24,120 psi | 44% | 2152 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 30,922 psi | 56% | 2346 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 29,051 psi | 53% | 2356 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,482 psi | 77% | 2477 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 35,534 psi | 64% | 2359 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 36,840 psi | 67% | 2336 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,859 psi | 80% | 2490 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,666 psi | 67% | 2369 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 33,750 psi | 61% | 2359 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 39,827 psi | 72% | 2431 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 43,700 psi | 79% | 2477 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 25,657 psi | 47% | 2139 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,610 psi | 72% | 2457 fps | 100% |
| Hodgdon Superformance | 48.5 gr | 86% | 35,708 psi | 65% | 2421 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,194 psi | 48% | 1385 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,134 psi | 76% | 2438 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 43,250 psi | 78% | 2457 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,667 psi | 70% | 2365 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,176 psi | 75% | 2385 fps | 97.2% |
| IMR 4350 | <<locked>> | 88% | 36,985 psi | 67% | 2365 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 34,069 psi | 62% | 2274 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 26,426 psi | 48% | 2178 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,958 psi | 73% | 2441 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 45,426 psi | 82% | 2467 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,047 psi | 76% | 2441 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,569 psi | 79% | 2405 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 38,421 psi | 70% | 2365 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 31,386 psi | 57% | 2228 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 33,707 psi | 61% | 2303 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 29,544 psi | 54% | 2270 fps | 95% |
| Norma 201 | <<locked>> | 80% | 42,235 psi | 77% | 2418 fps | 100% |
| Norma 202 | <<locked>> | 80% | 42,554 psi | 77% | 2421 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,392 psi | 70% | 2405 fps | 99.7% |
| Norma 204 | <<locked>> | 92% | 41,669 psi | 76% | 2490 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 33,968 psi | 62% | 2438 fps | 95% |
| Norma URP | <<locked>> | 80% | 27,746 psi | 50% | 2218 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 37,739 psi | 68% | 2418 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 31,053 psi | 56% | 2303 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 45,324 psi | 82% | 2484 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,759 psi | 81% | 2500 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,585 psi | 48% | 1421 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 37,086 psi | 67% | 2349 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,886 psi | 74% | 2510 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,257 psi | 60% | 2402 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 26,919 psi | 49% | 2224 fps | 95.3% |
| ReloadSwiss RS 70 | 44.4 gr | 82% | 29,312 psi | 53% | 2283 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 46,195 psi | 84% | 2444 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,118 psi | 73% | 2372 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 33,388 psi | 61% | 2306 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 98% | 45,252 psi | 82% | 2520 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 96% | 38,769 psi | 70% | 2467 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 36,840 psi | 67% | 2336 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 31,386 psi | 57% | 2228 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,047 psi | 76% | 2441 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,421 psi | 70% | 2365 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 33,707 psi | 61% | 2303 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,592 psi | 63% | 2359 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,221 psi | 78% | 2457 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,756 psi | 76% | 2441 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,932 psi | 80% | 2365 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,405 psi | 66% | 2251 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 34,708 psi | 63% | 2267 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 38,450 psi | 70% | 2464 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 43,323 psi | 79% | 2365 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,265 psi | 79% | 2454 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 34,476 psi | 63% | 2316 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 24,831 psi | 45% | 2178 fps | 98.1% |
| Somchem S385 | <<locked>> | 94% | 36,419 psi | 66% | 2402 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 44,295 psi | 80% | 2352 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,769 psi | 72% | 2349 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,277 psi | 73% | 2362 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,677 psi | 59% | 2254 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 29,124 psi | 53% | 2218 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 80% | 45,368 psi | 82% | 2461 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 38,841 psi | 70% | 2362 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 28,500 psi | 52% | 2224 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 23,873 psi | 43% | 2165 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,080 psi | 53% | 2201 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 45,063 psi | 82% | 2507 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 33,968 psi | 62% | 2365 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 23,989 psi | 44% | 2221 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,147 psi | 75% | 2448 fps | 100% |
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 115 powders for 7.5 x 55 Swiss loaded with the .308 | 200gr | Peregrine VRG-3. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,671 fps; across all powders the maximum-charge window runs from 1,552 fps to 2,671 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:12.0 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 7.5 x 55 Swiss with the .308 | 200gr | Peregrine VRG-3 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.