Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 207gr | Peregrine VLR5 (VLR-5) bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Winchester 760.
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% | 47,776 psi | 87% | 2346 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 48,240 psi | 88% | 2408 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 47,253 psi | 86% | 2428 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,733 psi | 88% | 2415 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 35,520 psi | 64% | 2326 fps | 96.9% |
| Accurate 4064 | <<locked>> | 90% | 48,327 psi | 88% | 2451 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 47,413 psi | 86% | 2530 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 49,777 psi | 90% | 2487 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 47,979 psi | 87% | 2448 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 44,483 psi | 81% | 2467 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 49,240 psi | 89% | 2441 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 49,240 psi | 89% | 2408 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 49,095 psi | 89% | 2595 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 43,830 psi | 80% | 2464 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 47,224 psi | 86% | 2461 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 47,950 psi | 87% | 2484 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,821 psi | 90% | 2585 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 47,369 psi | 86% | 2572 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 43,163 psi | 78% | 2457 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,027 psi | 64% | 2365 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,464 psi | 70% | 2500 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 49,284 psi | 89% | 2503 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 47,195 psi | 86% | 2474 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 48,153 psi | 87% | 2451 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 48,225 psi | 88% | 2385 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 47,848 psi | 87% | 2470 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 49,342 psi | 90% | 2552 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 48,283 psi | 88% | 2484 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 96% | 47,485 psi | 86% | 2533 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 94% | 48,965 psi | 89% | 2500 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 47,239 psi | 86% | 2451 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,876 psi | 83% | 2470 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 49,110 psi | 89% | 2526 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 47,921 psi | 87% | 2562 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,041 psi | 64% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 48,472 psi | 88% | 2454 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 46,891 psi | 85% | 2431 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 47,485 psi | 86% | 2428 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,514 psi | 86% | 2408 fps | 98.2% |
| IMR 4350 | <<locked>> | 98% | 47,979 psi | 87% | 2474 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,079 psi | 85% | 2434 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,312 psi | 88% | 2526 fps | 99.9% |
| IMR 4895 | <<locked>> | 88% | 49,153 psi | 89% | 2510 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 49,240 psi | 89% | 2441 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 48,936 psi | 89% | 2461 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 47,050 psi | 85% | 2379 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 47,079 psi | 85% | 2425 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 49,197 psi | 89% | 2474 fps | 99.4% |
| Lovex S070 | <<locked>> | 98% | 49,617 psi | 90% | 2503 fps | 98.8% |
| Norma 201 | <<locked>> | 86% | 48,776 psi | 89% | 2438 fps | 100% |
| Norma 202 | <<locked>> | 86% | 49,197 psi | 89% | 2438 fps | 100% |
| Norma 203B | <<locked>> | 88% | 47,210 psi | 86% | 2474 fps | 100% |
| Norma 204 | <<locked>> | 98% | 48,341 psi | 88% | 2516 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 39,102 psi | 71% | 2470 fps | 96.5% |
| Norma URP | <<locked>> | 98% | 47,311 psi | 86% | 2526 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 47,152 psi | 86% | 2493 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,284 psi | 89% | 2569 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 49,298 psi | 89% | 2464 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 48,602 psi | 88% | 2477 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,389 psi | 64% | 1522 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,950 psi | 89% | 2470 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 47,732 psi | 87% | 2539 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 47,268 psi | 86% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 47,108 psi | 85% | 2556 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 47,703 psi | 87% | 2582 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 49,617 psi | 90% | 2411 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 49,095 psi | 89% | 2434 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 47,094 psi | 85% | 2467 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 48,153 psi | 87% | 2451 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 96% | 49,197 psi | 89% | 2474 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 48,936 psi | 89% | 2461 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 47,079 psi | 85% | 2425 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 49,617 psi | 90% | 2503 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 48,921 psi | 89% | 2526 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 47,340 psi | 86% | 2441 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 48,472 psi | 88% | 2467 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 47,703 psi | 87% | 2339 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 47,355 psi | 86% | 2339 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,066 psi | 89% | 2428 fps | 98.4% |
| Somchem S335 | <<locked>> | 84% | 46,731 psi | 85% | 2336 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 47,007 psi | 85% | 2431 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 47,819 psi | 87% | 2467 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,049 psi | 82% | 2526 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 41,713 psi | 76% | 2421 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 84% | 47,964 psi | 87% | 2326 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 48,486 psi | 88% | 2395 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 49,472 psi | 90% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 49,008 psi | 89% | 2444 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 49,821 psi | 90% | 2520 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 49,327 psi | 90% | 2438 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 47,819 psi | 87% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 48,733 psi | 88% | 2530 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,507 psi | 68% | 2425 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 47,079 psi | 85% | 2457 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 48,762 psi | 88% | 2480 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 47,819 psi | 87% | 2539 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,980 psi | 56% | 2369 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 47,718 psi | 87% | 2467 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% | 44,817 psi | 81% | 2306 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,912 psi | 67% | 2247 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,077 psi | 80% | 2382 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 37,463 psi | 68% | 2231 fps | 95% |
| Accurate 3100 | <<locked>> | 96% | 30,821 psi | 56% | 2231 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 34,954 psi | 63% | 2247 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 27,006 psi | 49% | 2152 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 41,147 psi | 75% | 2352 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 35,041 psi | 64% | 2228 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 41,553 psi | 75% | 2415 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,279 psi | 79% | 2356 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 43,134 psi | 78% | 2333 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,275 psi | 68% | 2392 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 41,220 psi | 75% | 2421 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,330 psi | 62% | 2247 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,941 psi | 67% | 2300 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 26,905 psi | 49% | 2123 fps | 95.2% |
| Alliant Reloder-17 | 39.4 gr | 80% | 29,588 psi | 54% | 2231 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 40,640 psi | 74% | 2415 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 24,294 psi | 44% | 2090 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 92% | 29,254 psi | 53% | 2283 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,321 psi | 73% | 2362 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 33,533 psi | 61% | 2247 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 37,449 psi | 68% | 2270 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,411 psi | 82% | 2343 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,742 psi | 76% | 2382 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,977 psi | 83% | 2507 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 34,563 psi | 63% | 2251 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 34,200 psi | 62% | 2293 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 88% | 40,248 psi | 73% | 2359 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 41,524 psi | 75% | 2362 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 24,279 psi | 44% | 2031 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,449 psi | 68% | 2343 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 36,289 psi | 66% | 2352 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,904 psi | 47% | 1325 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,016 psi | 73% | 2323 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 41,104 psi | 75% | 2349 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,767 psi | 67% | 2254 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 39,421 psi | 72% | 2274 fps | 96.5% |
| IMR 4350 | <<locked>> | 90% | 37,449 psi | 68% | 2297 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 36,782 psi | 67% | 2257 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 26,614 psi | 48% | 2116 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,840 psi | 69% | 2326 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 43,279 psi | 79% | 2356 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,914 psi | 72% | 2333 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 41,698 psi | 76% | 2293 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 36,463 psi | 66% | 2254 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 31,691 psi | 57% | 2165 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 33,924 psi | 62% | 2234 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,263 psi | 73% | 2306 fps | 100% |
| Norma 202 | <<locked>> | 80% | 40,524 psi | 74% | 2313 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,303 psi | 66% | 2290 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 42,105 psi | 76% | 2415 fps | 95.3% |
| Norma MRP | <<locked>> | 98% | 36,550 psi | 66% | 2415 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 26,295 psi | 48% | 2110 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 35,868 psi | 65% | 2306 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 31,502 psi | 57% | 2241 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 43,236 psi | 78% | 2369 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,467 psi | 77% | 2385 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 48% | 1362 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 35,230 psi | 64% | 2238 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,667 psi | 70% | 2392 fps | 99.4% |
| ReloadSwiss RS 60 | 39.4 gr | 80% | 31,560 psi | 57% | 2287 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 27,209 psi | 49% | 2165 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 29,805 psi | 54% | 2221 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 44,179 psi | 80% | 2336 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,348 psi | 70% | 2267 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 31,531 psi | 57% | 2198 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 37,449 psi | 68% | 2270 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 31,691 psi | 57% | 2165 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,914 psi | 72% | 2333 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 36,463 psi | 66% | 2254 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 33,924 psi | 62% | 2234 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,895 psi | 60% | 2251 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,263 psi | 75% | 2346 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,900 psi | 72% | 2333 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,018 psi | 76% | 2260 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,679 psi | 63% | 2152 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 34,998 psi | 64% | 2201 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 41,394 psi | 75% | 2260 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,060 psi | 75% | 2343 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 32,634 psi | 59% | 2208 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 23,409 psi | 42% | 2067 fps | 97.2% |
| Somchem S385 | <<locked>> | 96% | 36,506 psi | 66% | 2329 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 42,322 psi | 77% | 2251 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,666 psi | 68% | 2244 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,348 psi | 70% | 2257 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,966 psi | 56% | 2152 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 27,499 psi | 50% | 2110 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 43,207 psi | 78% | 2352 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 36,709 psi | 67% | 2254 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 26,789 psi | 49% | 2113 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 25,498 psi | 46% | 2152 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,673 psi | 50% | 2093 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 42,685 psi | 77% | 2395 fps | 100% |
| Winchester 760 | 41.4 gr | 86% | 34,200 psi | 62% | 2293 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 24,134 psi | 44% | 2152 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,117 psi | 71% | 2336 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 98 powders for 7.5 x 55 Swiss loaded with the .308 | 207gr | Peregrine VLR5 (VLR-5). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,595 fps; across all powders the maximum-charge window runs from 1,486 fps to 2,595 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 207.0 gr projectile in 0.308" calls for a 1:9.5 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. Alliant Reloder-17, ReloadSwiss RS 60, Winchester 760 rank at the top here: for 7.5 x 55 Swiss with the .308 | 207gr | Peregrine VLR5 (VLR-5) 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.