Load Specifications
Load data in caliber .30-06 Spring. with .308 | 205gr | TWENTY-NINE ERTP 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 Alliant Power Pro 2000-MR.
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>> | 84% | 50,430 psi | 86% | 2290 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,837 psi | 88% | 2352 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 51,271 psi | 87% | 2346 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 50,067 psi | 85% | 2365 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 51,459 psi | 88% | 2343 fps | 96.3% |
| Accurate 4064 | <<locked>> | 92% | 51,068 psi | 87% | 2385 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,850 psi | 85% | 2448 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 52,533 psi | 89% | 2415 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 50,256 psi | 86% | 2372 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 51,909 psi | 88% | 2379 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 51,764 psi | 88% | 2352 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 51,576 psi | 88% | 2513 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 52,924 psi | 90% | 2431 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 50,314 psi | 86% | 2405 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,008 psi | 83% | 2454 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,939 psi | 90% | 2533 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,693 psi | 59% | 2228 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,261 psi | 65% | 2352 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 51,851 psi | 88% | 2428 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 49,661 psi | 85% | 2398 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 50,575 psi | 86% | 2369 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 50,618 psi | 86% | 2320 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 50,546 psi | 86% | 2402 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,199 psi | 89% | 2484 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 52,228 psi | 89% | 2365 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 51,053 psi | 87% | 2411 fps | 99% |
| Hodgdon H414 | <<locked>> | 98% | 49,937 psi | 85% | 2448 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 96% | 51,140 psi | 87% | 2415 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 53,026 psi | 90% | 2425 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,150 psi | 77% | 2349 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 51,634 psi | 88% | 2451 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 50,749 psi | 86% | 2474 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 60% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,140 psi | 87% | 2385 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 52,504 psi | 89% | 2408 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 52,953 psi | 90% | 2398 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,140 psi | 85% | 2336 fps | 96.9% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,430 psi | 86% | 2392 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,533 psi | 89% | 2398 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,442 psi | 81% | 2398 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 51,547 psi | 88% | 2431 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 51,909 psi | 88% | 2379 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 51,706 psi | 88% | 2362 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 51,793 psi | 88% | 2395 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 52,721 psi | 90% | 2356 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 52,547 psi | 89% | 2395 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 51,576 psi | 88% | 2395 fps | 98.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,967 psi | 88% | 2418 fps | 97.6% |
| Norma 201 | <<locked>> | 88% | 51,416 psi | 88% | 2369 fps | 100% |
| Norma 202 | <<locked>> | 88% | 51,677 psi | 88% | 2372 fps | 100% |
| Norma 203B | <<locked>> | 92% | 52,866 psi | 90% | 2441 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 49,443 psi | 84% | 2441 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 53,084 psi | 90% | 2464 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,762 psi | 83% | 2438 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 51,909 psi | 88% | 2388 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 51,169 psi | 87% | 2405 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,823 psi | 90% | 2379 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,636 psi | 61% | 1480 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,256 psi | 87% | 2356 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 51,590 psi | 88% | 2395 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 49,995 psi | 85% | 2457 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,156 psi | 90% | 2536 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,574 psi | 84% | 2470 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,227 psi | 86% | 2490 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 86% | 52,460 psi | 89% | 2352 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 51,706 psi | 88% | 2365 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 53,069 psi | 90% | 2438 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 50,575 psi | 86% | 2369 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 51,576 psi | 88% | 2395 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 51,793 psi | 88% | 2395 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 52,547 psi | 89% | 2395 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,967 psi | 88% | 2418 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 51,459 psi | 88% | 2448 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 50,053 psi | 85% | 2369 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 50,720 psi | 86% | 2388 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,113 psi | 90% | 2316 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,895 psi | 90% | 2316 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 51,909 psi | 88% | 2352 fps | 97.2% |
| Somchem S321 | <<locked>> | 84% | 52,649 psi | 90% | 2405 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 52,460 psi | 89% | 2316 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 52,939 psi | 90% | 2405 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 50,502 psi | 86% | 2395 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,237 psi | 75% | 2398 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 50,183 psi | 85% | 2251 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 50,430 psi | 86% | 2270 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 50,995 psi | 87% | 2336 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 52,243 psi | 89% | 2352 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 51,735 psi | 88% | 2375 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,025 psi | 89% | 2438 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 52,141 psi | 89% | 2375 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 50,473 psi | 86% | 2356 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,256 psi | 87% | 2448 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,014 psi | 63% | 2290 fps | 97.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,895 psi | 90% | 2425 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 51,329 psi | 87% | 2411 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 49,937 psi | 85% | 2448 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,024 psi | 53% | 2211 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 50,299 psi | 86% | 2398 fps | 99.9% |
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% | 44,585 psi | 76% | 2215 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,457 psi | 82% | 2310 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,115 psi | 63% | 2152 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,714 psi | 74% | 2277 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,182 psi | 82% | 2297 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 35,070 psi | 60% | 2142 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,098 psi | 56% | 2165 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 40,843 psi | 70% | 2238 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 34,824 psi | 59% | 2113 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,873 psi | 73% | 2244 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 42,540 psi | 72% | 2238 fps | 100% |
| Alliant Power Pro 2000-MR | 40.1 gr | 80% | 36,927 psi | 63% | 2257 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,127 psi | 58% | 2133 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,680 psi | 62% | 2182 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,098 psi | 58% | 2178 fps | 95.7% |
| Alliant Reloder-17 | 39.5 gr | 80% | 29,501 psi | 50% | 2100 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,138 psi | 50% | 2093 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 35,766 psi | 61% | 2297 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,827 psi | 68% | 2241 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 33,417 psi | 57% | 2129 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 44,860 psi | 76% | 2283 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,020 psi | 77% | 2241 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,307 psi | 70% | 2267 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,252 psi | 77% | 2382 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 49,081 psi | 84% | 2326 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 34,447 psi | 59% | 2133 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 94% | 43,961 psi | 75% | 2356 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 94% | 48,167 psi | 82% | 2369 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 41,176 psi | 70% | 2247 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,240 psi | 50% | 2044 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,028 psi | 63% | 2221 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 96% | 47,442 psi | 81% | 2425 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,165 psi | 45% | 1289 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,668 psi | 68% | 2208 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 40,640 psi | 69% | 2247 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,492 psi | 62% | 2139 fps | 97.4% |
| IMR 4166 Enduron | <<locked>> | 84% | 44,324 psi | 75% | 2247 fps | 95.6% |
| IMR 4350 | <<locked>> | 96% | 44,512 psi | 76% | 2303 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 43,816 psi | 75% | 2267 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 32,213 psi | 55% | 2129 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 37,550 psi | 64% | 2208 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 80% | 42,873 psi | 73% | 2244 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 48,385 psi | 82% | 2320 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,624 psi | 67% | 2221 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 41,394 psi | 70% | 2188 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 36,361 psi | 62% | 2146 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 38,116 psi | 65% | 2178 fps | 95.5% |
| Lovex S070 | <<locked>> | 92% | 40,698 psi | 69% | 2244 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,147 psi | 68% | 2198 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 40,219 psi | 68% | 2208 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,071 psi | 61% | 2172 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 33,765 psi | 57% | 2169 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,549 psi | 61% | 2182 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 94% | 40,335 psi | 69% | 2297 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 42,844 psi | 73% | 2251 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,989 psi | 71% | 2267 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,485 psi | 79% | 2290 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 45% | 1316 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,269 psi | 82% | 2316 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 39,972 psi | 68% | 2211 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,189 psi | 65% | 2267 fps | 97.8% |
| ReloadSwiss RS 60 | 39.5 gr | 80% | 31,415 psi | 53% | 2156 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 33,185 psi | 56% | 2182 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,479 psi | 66% | 2287 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 43,888 psi | 75% | 2234 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,261 psi | 65% | 2159 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 31,531 psi | 54% | 2083 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 44,860 psi | 76% | 2283 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,116 psi | 65% | 2178 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,624 psi | 67% | 2221 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 36,361 psi | 62% | 2146 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 40,698 psi | 69% | 2244 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,677 psi | 56% | 2129 fps | 96.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,973 psi | 70% | 2228 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,523 psi | 67% | 2215 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,727 psi | 71% | 2162 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,490 psi | 59% | 2054 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 42,627 psi | 73% | 2221 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 46,166 psi | 79% | 2316 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,191 psi | 70% | 2165 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,596 psi | 69% | 2224 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 32,605 psi | 56% | 2093 fps | 97.2% |
| Somchem S365 | <<locked>> | 82% | 25,164 psi | 43% | 1991 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 47,239 psi | 80% | 2215 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,974 psi | 71% | 2159 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,434 psi | 64% | 2149 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,058 psi | 65% | 2152 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,864 psi | 53% | 2041 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 33,417 psi | 57% | 2129 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 42,786 psi | 73% | 2241 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 36,506 psi | 62% | 2146 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 34,737 psi | 59% | 2175 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 94% | 30,589 psi | 52% | 2152 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,443 psi | 50% | 2018 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 42,163 psi | 72% | 2280 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 43,961 psi | 75% | 2356 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,109 psi | 50% | 2152 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,711 psi | 66% | 2218 fps | 98.8% |
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 .30-06 Spring. loaded with the .308 | 205gr | TWENTY-NINE ERTP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,536 fps; across all powders the maximum-charge window runs from 1,440 fps to 2,536 fps. Accurate 4350 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 (405 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 205.0 gr projectile in 0.308" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .30-06 Spring. with the .308 | 205gr | TWENTY-NINE ERTP 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.