Load Specifications
Load data in caliber 7.5 x 55 Swiss with .308 | 197gr | Peregrine VLR5 (VLR-5) bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Alliant Reloder-17 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>> | 84% | 49,792 psi | 90% | 2444 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 47,239 psi | 86% | 2467 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 49,559 psi | 90% | 2533 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,718 psi | 87% | 2470 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 34,461 psi | 63% | 2372 fps | 96.1% |
| Accurate 4064 | <<locked>> | 90% | 47,224 psi | 86% | 2513 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,371 psi | 90% | 2631 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 48,878 psi | 89% | 2546 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 47,094 psi | 85% | 2507 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 48,414 psi | 88% | 2503 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 48,385 psi | 88% | 2474 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 47,834 psi | 87% | 2651 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 49,414 psi | 90% | 2566 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 46,963 psi | 85% | 2543 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,805 psi | 89% | 2644 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 49,501 psi | 90% | 2677 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,243 psi | 62% | 2411 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 37,565 psi | 68% | 2546 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 48,486 psi | 88% | 2566 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 49,356 psi | 90% | 2579 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 47,108 psi | 85% | 2503 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 47,297 psi | 86% | 2444 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 46,789 psi | 85% | 2530 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 48,472 psi | 88% | 2618 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 47,456 psi | 86% | 2546 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 98% | 49,617 psi | 90% | 2638 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 94% | 47,732 psi | 87% | 2552 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 86% | 49,298 psi | 89% | 2556 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,889 psi | 81% | 2530 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 48,211 psi | 87% | 2589 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 46,963 psi | 85% | 2618 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,085 psi | 64% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 47,630 psi | 86% | 2513 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 48,762 psi | 88% | 2533 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 49,530 psi | 90% | 2530 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 46,731 psi | 85% | 2464 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 47,021 psi | 85% | 2530 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,197 psi | 89% | 2536 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,079 psi | 85% | 2582 fps | 99.8% |
| IMR 4895 | <<locked>> | 88% | 48,138 psi | 87% | 2569 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 48,414 psi | 88% | 2503 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 47,892 psi | 87% | 2520 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 49,226 psi | 89% | 2480 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 49,066 psi | 89% | 2526 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 48,022 psi | 87% | 2530 fps | 99% |
| Lovex S070 | <<locked>> | 98% | 48,617 psi | 88% | 2559 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 47,630 psi | 86% | 2493 fps | 100% |
| Norma 202 | <<locked>> | 86% | 48,312 psi | 88% | 2500 fps | 100% |
| Norma 203B | <<locked>> | 90% | 49,066 psi | 89% | 2572 fps | 100% |
| Norma 204 | <<locked>> | 98% | 47,224 psi | 86% | 2569 fps | 96.1% |
| Norma URPᴾ | <<locked>> | 100% | 49,211 psi | 89% | 2628 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 49,443 psi | 90% | 2598 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,327 psi | 88% | 2628 fps | 98.9% |
| Ramshot TAC | <<locked>> | 84% | 48,312 psi | 88% | 2520 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 47,543 psi | 86% | 2536 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 49,255 psi | 89% | 2507 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,389 psi | 64% | 1572 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,138 psi | 87% | 2530 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 46,586 psi | 85% | 2598 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 49,501 psi | 90% | 2677 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,095 psi | 89% | 2657 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,499 psi | 84% | 2631 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 84% | 48,936 psi | 89% | 2477 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 48,254 psi | 88% | 2493 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 49,255 psi | 89% | 2569 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 47,108 psi | 85% | 2503 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 48,022 psi | 87% | 2530 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 47,892 psi | 87% | 2520 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 49,066 psi | 89% | 2526 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 48,617 psi | 88% | 2559 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 47,616 psi | 86% | 2582 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 49,545 psi | 90% | 2543 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 47,485 psi | 86% | 2523 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 49,777 psi | 90% | 2438 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 49,516 psi | 90% | 2438 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,080 psi | 87% | 2484 fps | 98% |
| Somchem S321 | <<locked>> | 82% | 48,907 psi | 89% | 2533 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 48,820 psi | 89% | 2438 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 49,472 psi | 90% | 2539 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 46,731 psi | 85% | 2523 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,874 psi | 80% | 2582 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 40,901 psi | 74% | 2474 fps | 96.1% |
| Vihtavuori N130 | <<locked>> | 82% | 49,821 psi | 90% | 2405 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 47,065 psi | 85% | 2385 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 47,601 psi | 86% | 2461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 48,544 psi | 88% | 2477 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 48,124 psi | 87% | 2507 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 48,675 psi | 88% | 2575 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 48,501 psi | 88% | 2500 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 46,804 psi | 85% | 2480 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 47,587 psi | 86% | 2585 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,550 psi | 66% | 2477 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 49,443 psi | 90% | 2562 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 47,732 psi | 87% | 2539 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 46,717 psi | 85% | 2592 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,371 psi | 55% | 2408 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 46,963 psi | 85% | 2530 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% | 44,019 psi | 80% | 2369 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,013 psi | 65% | 2303 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,902 psi | 78% | 2438 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 39,131 psi | 71% | 2326 fps | 95% |
| Accurate 3100 | <<locked>> | 98% | 32,256 psi | 59% | 2326 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 34,113 psi | 62% | 2300 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 28,181 psi | 51% | 2241 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 40,321 psi | 73% | 2408 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 34,389 psi | 62% | 2277 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,395 psi | 77% | 2411 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 42,119 psi | 76% | 2392 fps | 100% |
| Alliant Power Pro 2000-MR | 40.8 gr | 80% | 36,361 psi | 66% | 2438 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,547 psi | 61% | 2297 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,100 psi | 66% | 2352 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 28,007 psi | 51% | 2211 fps | 95.2% |
| Alliant Reloder-17 | 40.2 gr | 80% | 28,848 psi | 52% | 2270 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 25,222 psi | 46% | 2172 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 94% | 30,501 psi | 55% | 2375 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,523 psi | 72% | 2418 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 32,880 psi | 60% | 2300 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 39,073 psi | 71% | 2365 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,628 psi | 81% | 2405 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,625 psi | 74% | 2434 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,976 psi | 82% | 2562 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 80% | 33,982 psi | 62% | 2303 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 35,723 psi | 65% | 2392 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 90% | 42,119 psi | 76% | 2457 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 40,625 psi | 74% | 2418 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 23,772 psi | 43% | 2073 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,709 psi | 67% | 2398 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 37,942 psi | 69% | 2451 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,860 psi | 47% | 1368 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,218 psi | 71% | 2375 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 40,205 psi | 73% | 2408 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,056 psi | 65% | 2303 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 38,638 psi | 70% | 2323 fps | 95.8% |
| IMR 4350 | <<locked>> | 92% | 39,117 psi | 71% | 2392 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 38,406 psi | 70% | 2352 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 27,789 psi | 50% | 2208 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 36,956 psi | 67% | 2379 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 42,395 psi | 77% | 2411 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 38,899 psi | 71% | 2385 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 40,973 psi | 74% | 2352 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 35,708 psi | 65% | 2310 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 31,183 psi | 57% | 2215 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 35,317 psi | 64% | 2326 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,465 psi | 72% | 2362 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 39,682 psi | 72% | 2369 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,491 psi | 64% | 2343 fps | 98.9% |
| Norma 204 | <<locked>> | 96% | 44,135 psi | 80% | 2516 fps | 95.3% |
| Norma URP | <<locked>> | 82% | 27,514 psi | 50% | 2201 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 34,896 psi | 63% | 2352 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 32,880 psi | 60% | 2336 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,235 psi | 77% | 2421 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,684 psi | 76% | 2444 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,861 psi | 83% | 2457 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 48% | 1404 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 34,621 psi | 63% | 2287 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,637 psi | 68% | 2444 fps | 99% |
| ReloadSwiss RS 60 | 40.2 gr | 80% | 30,763 psi | 56% | 2329 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 28,442 psi | 52% | 2257 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 31,111 psi | 56% | 2316 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 43,134 psi | 78% | 2392 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,623 psi | 68% | 2323 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 30,792 psi | 56% | 2247 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 39,073 psi | 71% | 2365 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 31,183 psi | 57% | 2215 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,899 psi | 71% | 2385 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 35,708 psi | 65% | 2310 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 35,317 psi | 64% | 2326 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,097 psi | 58% | 2297 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,219 psi | 73% | 2395 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,972 psi | 71% | 2382 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,336 psi | 75% | 2320 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,040 psi | 62% | 2205 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 36,767 psi | 67% | 2300 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 45,788 psi | 83% | 2487 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 40,625 psi | 74% | 2320 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,234 psi | 73% | 2395 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 31,923 psi | 58% | 2257 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 22,858 psi | 41% | 2103 fps | 96.3% |
| Somchem S385 | <<locked>> | 98% | 38,189 psi | 69% | 2425 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 46,891 psi | 85% | 2365 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,626 psi | 76% | 2310 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,883 psi | 67% | 2303 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,521 psi | 68% | 2313 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,240 psi | 55% | 2198 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 28,776 psi | 52% | 2201 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,569 psi | 77% | 2411 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 36,114 psi | 66% | 2310 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 28,123 psi | 51% | 2208 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 90% | 26,469 psi | 48% | 2238 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,151 psi | 49% | 2139 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 41,597 psi | 75% | 2451 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 35,723 psi | 65% | 2392 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 94% | 25,019 psi | 45% | 2234 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,101 psi | 69% | 2385 fps | 99.6% |
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 | 197gr | Peregrine VLR5 (VLR-5). Alliant Reloder-17 delivers the highest muzzle velocity at 2,677 fps; across all powders the maximum-charge window runs from 1,535 fps to 2,677 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 55–90 %, leaving at least 10 % headroom. The 197.0 gr projectile in 0.308" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 7.5 x 55 Swiss with the .308 | 197gr | 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.