Load Specifications
Load data in caliber .30-06 Spring. 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 ReloadSwiss RS 70, Hodgdon Superformance 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 51,808 psi | 88% | 2349 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 49,806 psi | 85% | 2369 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 51,938 psi | 88% | 2431 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,895 psi | 90% | 2425 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 40,538 psi | 69% | 2336 fps | 97% |
| Accurate 4064 | <<locked>> | 88% | 50,270 psi | 86% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 49,864 psi | 85% | 2493 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 51,126 psi | 87% | 2448 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 52,272 psi | 89% | 2451 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 48,791 psi | 83% | 2474 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 82% | 50,154 psi | 85% | 2402 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 50,908 psi | 87% | 2379 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 50,285 psi | 86% | 2549 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 52,025 psi | 89% | 2467 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 52,518 psi | 89% | 2487 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 51,663 psi | 88% | 2549 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 52,663 psi | 90% | 2579 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 47,747 psi | 81% | 2467 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,885 psi | 66% | 2362 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,555 psi | 74% | 2513 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 50,691 psi | 86% | 2461 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 52,301 psi | 89% | 2480 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 52,663 psi | 90% | 2457 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 51,750 psi | 88% | 2385 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 52,576 psi | 90% | 2470 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 49,821 psi | 85% | 2444 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 96% | 52,910 psi | 90% | 2543 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 50,488 psi | 86% | 2461 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 84% | 51,619 psi | 88% | 2454 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,256 psi | 87% | 2480 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 50,865 psi | 87% | 2487 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 49,501 psi | 84% | 2520 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 61% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 52,823 psi | 90% | 2457 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 51,663 psi | 88% | 2438 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 51,547 psi | 88% | 2431 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,590 psi | 88% | 2418 fps | 98.2% |
| IMR 4350 | <<locked>> | 98% | 53,040 psi | 90% | 2484 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,488 psi | 88% | 2444 fps | 98.1% |
| IMR 4831 | <<locked>> | 98% | 50,633 psi | 86% | 2490 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 50,415 psi | 86% | 2464 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 50,154 psi | 85% | 2402 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 50,299 psi | 86% | 2421 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 50,981 psi | 87% | 2385 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 51,227 psi | 87% | 2428 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 50,517 psi | 86% | 2434 fps | 99% |
| Lovex S070 | <<locked>> | 96% | 51,271 psi | 87% | 2464 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 52,823 psi | 90% | 2438 fps | 100% |
| Norma 202 | <<locked>> | 84% | 50,241 psi | 86% | 2398 fps | 100% |
| Norma 203B | <<locked>> | 88% | 51,706 psi | 88% | 2474 fps | 100% |
| Norma 204 | <<locked>> | 96% | 49,777 psi | 85% | 2474 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 43,555 psi | 74% | 2470 fps | 96.6% |
| Norma URP | <<locked>> | 98% | 52,794 psi | 90% | 2533 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 52,243 psi | 89% | 2500 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 51,329 psi | 87% | 2530 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 50,053 psi | 85% | 2418 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 53,069 psi | 90% | 2480 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,897 psi | 61% | 1532 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 50,328 psi | 86% | 2431 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 52,808 psi | 90% | 2543 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 52,185 psi | 89% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 53,040 psi | 90% | 2562 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 52,736 psi | 90% | 2589 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 50,662 psi | 86% | 2379 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 50,285 psi | 86% | 2395 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 52,127 psi | 89% | 2470 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 46,282 psi | 79% | 2448 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 94% | 52,663 psi | 90% | 2457 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 50,517 psi | 86% | 2434 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 84% | 50,299 psi | 86% | 2421 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 51,227 psi | 87% | 2428 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 51,271 psi | 87% | 2464 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 50,473 psi | 86% | 2480 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,735 psi | 88% | 2444 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 52,692 psi | 90% | 2467 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 51,285 psi | 87% | 2343 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 51,721 psi | 88% | 2346 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 50,546 psi | 86% | 2392 fps | 98% |
| Somchem S335 | <<locked>> | 84% | 50,763 psi | 86% | 2343 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 51,648 psi | 88% | 2438 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 52,736 psi | 90% | 2474 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 50,488 psi | 86% | 2530 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 46,978 psi | 80% | 2431 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 84% | 51,634 psi | 88% | 2329 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 49,966 psi | 85% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 50,734 psi | 86% | 2379 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 50,647 psi | 86% | 2408 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,851 psi | 88% | 2484 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 50,473 psi | 86% | 2402 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 52,214 psi | 89% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 50,778 psi | 86% | 2490 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,859 psi | 73% | 2434 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 52,011 psi | 89% | 2464 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 50,401 psi | 86% | 2444 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 49,777 psi | 85% | 2497 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,621 psi | 59% | 2375 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 52,475 psi | 89% | 2474 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 48,733 psi | 83% | 2313 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,915 psi | 70% | 2247 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,559 psi | 83% | 2388 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,497 psi | 74% | 2280 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 35,317 psi | 60% | 2241 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 38,754 psi | 66% | 2247 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,400 psi | 52% | 2146 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 44,802 psi | 76% | 2352 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 38,218 psi | 65% | 2224 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 45,934 psi | 78% | 2428 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,963 psi | 80% | 2356 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 47,718 psi | 81% | 2339 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,843 psi | 70% | 2388 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,666 psi | 64% | 2241 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,480 psi | 69% | 2300 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 31,285 psi | 53% | 2165 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,460 psi | 55% | 2221 fps | 98.1% |
| Alliant Reloder-19 | <<locked>> | 98% | 44,701 psi | 76% | 2415 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,818 psi | 46% | 2080 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 32,735 psi | 56% | 2283 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,237 psi | 75% | 2362 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 37,260 psi | 63% | 2247 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 40,886 psi | 70% | 2270 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,791 psi | 83% | 2346 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,759 psi | 78% | 2379 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,247 psi | 65% | 2254 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 37,753 psi | 64% | 2293 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 44,295 psi | 75% | 2365 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 45,252 psi | 77% | 2362 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,774 psi | 46% | 2031 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,307 psi | 70% | 2339 fps | 99.8% |
| Hodgdon Superformance | 52 gr | 88% | 40,059 psi | 68% | 2356 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 45% | 1335 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,555 psi | 74% | 2323 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 45,179 psi | 77% | 2352 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,132 psi | 68% | 2254 fps | 98.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,699 psi | 73% | 2274 fps | 96.4% |
| IMR 4350 | <<locked>> | 90% | 41,075 psi | 70% | 2297 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,016 psi | 68% | 2254 fps | 95.5% |
| IMR 4831 | <<locked>> | 82% | 29,646 psi | 50% | 2113 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 41,495 psi | 71% | 2326 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,963 psi | 80% | 2356 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,874 psi | 75% | 2329 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,020 psi | 77% | 2297 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 39,943 psi | 68% | 2254 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 34,896 psi | 59% | 2165 fps | 95.5% |
| Lovex S070 | <<locked>> | 86% | 37,275 psi | 63% | 2231 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 43,830 psi | 75% | 2306 fps | 100% |
| Norma 202 | <<locked>> | 80% | 44,193 psi | 75% | 2313 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,871 psi | 68% | 2287 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 46,485 psi | 79% | 2421 fps | 95.4% |
| Norma MRP | <<locked>> | 98% | 40,712 psi | 69% | 2421 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 31,009 psi | 53% | 2152 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 39,494 psi | 67% | 2303 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 36,956 psi | 63% | 2283 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 46,992 psi | 80% | 2372 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,601 psi | 79% | 2388 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,571 psi | 45% | 1365 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,740 psi | 66% | 2241 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,830 psi | 73% | 2392 fps | 99.3% |
| ReloadSwiss RS 60 | 44.7 gr | 80% | 34,592 psi | 59% | 2280 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 30,327 psi | 52% | 2162 fps | 95% |
| ReloadSwiss RS 70 | 47.7 gr | 84% | 32,764 psi | 56% | 2218 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 47,718 psi | 81% | 2336 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,698 psi | 71% | 2267 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 35,070 psi | 60% | 2198 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 98% | 43,207 psi | 74% | 2395 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 40,886 psi | 70% | 2270 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,896 psi | 59% | 2165 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,874 psi | 75% | 2329 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,943 psi | 68% | 2254 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 37,275 psi | 63% | 2231 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,085 psi | 61% | 2244 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,034 psi | 77% | 2346 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,337 psi | 74% | 2326 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,310 psi | 77% | 2260 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,666 psi | 64% | 2149 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 38,740 psi | 66% | 2205 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 44,846 psi | 76% | 2264 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,034 psi | 77% | 2346 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 35,897 psi | 61% | 2201 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 25,889 psi | 44% | 2060 fps | 96.9% |
| Somchem S385 | <<locked>> | 96% | 40,973 psi | 70% | 2333 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 45,730 psi | 78% | 2254 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,321 psi | 70% | 2244 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,003 psi | 72% | 2257 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,229 psi | 58% | 2149 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 30,313 psi | 52% | 2106 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 47,166 psi | 80% | 2356 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,422 psi | 69% | 2254 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,966 psi | 54% | 2159 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 88% | 28,645 psi | 49% | 2146 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,255 psi | 52% | 2090 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 46,833 psi | 80% | 2395 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 38,000 psi | 65% | 2297 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,687 psi | 45% | 2146 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,018 psi | 73% | 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 97 powders for .30-06 Spring. loaded with the .308 | 206gr | Peregrine Backup (VRG-2). ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,589 fps; across all powders the maximum-charge window runs from 1,496 fps to 2,589 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 (405 MPa), the top charges use 59–90 %, 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, ADI AR 2209, Alliant Reloder-19 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, ReloadSwiss RS 60 rank at the top here: for .30-06 Spring. 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.