Load Specifications
Load data in caliber 7.62 x 53 R Fin. with .308 | 206gr | Peregrine Backup (VRG-2) bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Superformance, 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: 27"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 48,443 psi | 86% | 2359 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 48,950 psi | 87% | 2418 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 51,068 psi | 90% | 2477 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,400 psi | 87% | 2421 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 36,332 psi | 64% | 2326 fps | 96.1% |
| Accurate 4064 | <<locked>> | 90% | 49,168 psi | 87% | 2461 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 48,283 psi | 85% | 2536 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 50,705 psi | 90% | 2497 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 48,428 psi | 86% | 2451 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 49,995 psi | 88% | 2451 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 50,140 psi | 89% | 2425 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 49,559 psi | 88% | 2595 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 51,068 psi | 90% | 2513 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 48,689 psi | 86% | 2490 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,633 psi | 90% | 2592 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 48,022 psi | 85% | 2575 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,578 psi | 63% | 2359 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,131 psi | 69% | 2493 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 49,951 psi | 88% | 2507 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 48,022 psi | 85% | 2480 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 48,762 psi | 86% | 2454 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 48,646 psi | 86% | 2392 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 48,457 psi | 86% | 2477 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 50,386 psi | 89% | 2566 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 48,979 psi | 87% | 2490 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 96% | 48,182 psi | 85% | 2533 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 94% | 49,647 psi | 88% | 2503 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 86% | 51,169 psi | 90% | 2503 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,441 psi | 82% | 2474 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 49,864 psi | 88% | 2530 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 48,805 psi | 86% | 2566 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,085 psi | 62% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 49,095 psi | 87% | 2461 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 50,720 psi | 90% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 50,966 psi | 90% | 2477 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,269 psi | 85% | 2415 fps | 97.6% |
| IMR 4350 | <<locked>> | 98% | 48,718 psi | 86% | 2477 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,778 psi | 90% | 2484 fps | 98% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,313 psi | 87% | 2533 fps | 99.7% |
| IMR 4895 | <<locked>> | 88% | 49,908 psi | 88% | 2516 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 49,995 psi | 88% | 2451 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 49,690 psi | 88% | 2470 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 50,734 psi | 90% | 2431 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 50,517 psi | 89% | 2470 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 49,661 psi | 88% | 2477 fps | 99% |
| Lovex S070 | <<locked>> | 98% | 50,140 psi | 89% | 2507 fps | 98.3% |
| Norma 201 | <<locked>> | 86% | 49,226 psi | 87% | 2441 fps | 100% |
| Norma 202 | <<locked>> | 86% | 49,937 psi | 88% | 2448 fps | 100% |
| Norma 203B | <<locked>> | 90% | 51,082 psi | 90% | 2523 fps | 100% |
| Norma 204 | <<locked>> | 98% | 49,037 psi | 87% | 2520 fps | 96% |
| Norma URPᴾ | <<locked>> | 100% | 51,140 psi | 90% | 2572 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 47,688 psi | 84% | 2497 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,183 psi | 89% | 2572 fps | 98.9% |
| Ramshot TAC | <<locked>> | 84% | 50,038 psi | 88% | 2470 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 49,153 psi | 87% | 2480 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 50,502 psi | 89% | 2451 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,404 psi | 63% | 1535 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 49,777 psi | 88% | 2477 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 48,544 psi | 86% | 2543 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 47,805 psi | 85% | 2575 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 47,834 psi | 85% | 2556 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 48,443 psi | 86% | 2582 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 84% | 50,183 psi | 89% | 2421 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 49,850 psi | 88% | 2441 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 51,169 psi | 90% | 2516 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 48,762 psi | 86% | 2454 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 49,661 psi | 88% | 2477 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 86% | 49,690 psi | 88% | 2470 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 50,517 psi | 89% | 2470 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 50,140 psi | 89% | 2507 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 49,661 psi | 88% | 2530 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 47,877 psi | 85% | 2444 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 49,110 psi | 87% | 2470 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 51,184 psi | 90% | 2388 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 47,993 psi | 85% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,980 psi | 88% | 2434 fps | 97.9% |
| Somchem S321 | <<locked>> | 82% | 50,604 psi | 89% | 2480 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 50,372 psi | 89% | 2388 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 50,937 psi | 90% | 2484 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 48,689 psi | 86% | 2474 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,643 psi | 81% | 2530 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 42,453 psi | 75% | 2421 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 82% | 51,082 psi | 90% | 2352 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 48,544 psi | 86% | 2339 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 49,429 psi | 87% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 50,357 psi | 89% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 49,937 psi | 88% | 2454 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 50,618 psi | 89% | 2526 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 50,053 psi | 88% | 2448 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 48,385 psi | 86% | 2425 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 49,298 psi | 87% | 2530 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,276 psi | 68% | 2425 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 51,010 psi | 90% | 2507 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 49,545 psi | 88% | 2490 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 48,530 psi | 86% | 2539 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,546 psi | 56% | 2356 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 48,544 psi | 86% | 2477 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 27"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 45,397 psi | 80% | 2316 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,565 psi | 66% | 2254 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,541 psi | 79% | 2388 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 43,279 psi | 77% | 2326 fps | 95.7% |
| Accurate 3100 | <<locked>> | 98% | 33,866 psi | 60% | 2277 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 35,607 psi | 63% | 2251 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 29,530 psi | 52% | 2192 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 41,669 psi | 74% | 2356 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,636 psi | 63% | 2228 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,758 psi | 77% | 2359 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 43,656 psi | 77% | 2339 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,840 psi | 67% | 2388 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,867 psi | 62% | 2244 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,405 psi | 66% | 2300 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 84% | 30,864 psi | 55% | 2211 fps | 95.9% |
| Alliant Reloder-17 | 42.1 gr | 80% | 29,921 psi | 53% | 2221 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 26,194 psi | 46% | 2123 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 94% | 31,850 psi | 56% | 2326 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,828 psi | 72% | 2362 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 34,156 psi | 60% | 2247 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 40,263 psi | 71% | 2313 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,701 psi | 81% | 2349 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,351 psi | 75% | 2385 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,862 psi | 83% | 2513 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 80% | 35,143 psi | 62% | 2251 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 37,028 psi | 65% | 2339 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 43,758 psi | 77% | 2408 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,003 psi | 74% | 2362 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 26,223 psi | 46% | 2070 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,927 psi | 67% | 2343 fps | 99.6% |
| Hodgdon Superformance | 50.1 gr | 90% | 39,494 psi | 70% | 2402 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 46% | 1339 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,538 psi | 72% | 2323 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 41,626 psi | 74% | 2356 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,391 psi | 66% | 2257 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 39,755 psi | 70% | 2270 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 40,364 psi | 71% | 2339 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 39,610 psi | 70% | 2300 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 28,993 psi | 51% | 2159 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 38,319 psi | 68% | 2326 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 43,758 psi | 77% | 2359 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,524 psi | 72% | 2336 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,293 psi | 75% | 2303 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 37,086 psi | 66% | 2260 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 34,200 psi | 60% | 2205 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 36,753 psi | 65% | 2277 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 40,872 psi | 72% | 2313 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 41,147 psi | 73% | 2320 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,796 psi | 65% | 2290 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 45,687 psi | 81% | 2464 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 30,443 psi | 54% | 2198 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 36,434 psi | 64% | 2306 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 36,201 psi | 64% | 2326 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 43,743 psi | 77% | 2372 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,076 psi | 76% | 2388 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,253 psi | 84% | 2405 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 47% | 1371 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 35,882 psi | 63% | 2238 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,276 psi | 69% | 2395 fps | 98.9% |
| ReloadSwiss RS 60 | 42.1 gr | 80% | 31,923 psi | 56% | 2277 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 29,646 psi | 52% | 2208 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 32,329 psi | 57% | 2264 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 44,454 psi | 79% | 2339 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,769 psi | 69% | 2270 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 32,082 psi | 57% | 2195 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 40,263 psi | 71% | 2313 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 34,200 psi | 60% | 2205 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,524 psi | 72% | 2336 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,086 psi | 66% | 2260 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 36,753 psi | 65% | 2277 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,359 psi | 59% | 2247 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,814 psi | 74% | 2346 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,408 psi | 71% | 2333 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,598 psi | 75% | 2267 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,186 psi | 62% | 2156 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 38,276 psi | 68% | 2251 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 47,210 psi | 83% | 2431 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,989 psi | 74% | 2270 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,582 psi | 74% | 2346 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 33,185 psi | 59% | 2205 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 23,743 psi | 42% | 2054 fps | 96.1% |
| Somchem S385 | <<locked>> | 98% | 39,740 psi | 70% | 2372 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 48,240 psi | 85% | 2316 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,917 psi | 76% | 2260 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,247 psi | 68% | 2251 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,885 psi | 69% | 2260 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,444 psi | 56% | 2149 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 29,733 psi | 53% | 2149 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 43,918 psi | 78% | 2359 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 37,304 psi | 66% | 2254 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 31,198 psi | 55% | 2201 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 27,659 psi | 49% | 2185 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,007 psi | 50% | 2087 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 43,221 psi | 76% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 37,260 psi | 66% | 2343 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 26,049 psi | 46% | 2185 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,523 psi | 70% | 2333 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 7.62 x 53 R Fin. loaded with the .308 | 206gr | Peregrine Backup (VRG-2). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,595 fps; across all powders the maximum-charge window runs from 1,499 fps to 2,595 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 (390 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 206.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-16, Alliant Reloder-23 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. Hodgdon Superformance, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 7.62 x 53 R Fin. with the .308 | 206gr | Peregrine Backup (VRG-2) 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.