Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:190 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.014"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:59 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:16.0
Load data in caliber .308 Win. Ackley Improved with .308 | 190gr | Barnes Barnes Original FN FB bullet and 97 powders. The key underlying parameters are shown in the table above.
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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 88% | 54,447 psi | 90% | 2457 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 52,663 psi | 87% | 2480 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 51,793 psi | 86% | 2474 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,099 psi | 90% | 2536 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 51,416 psi | 85% | 2513 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,833 psi | 78% | 2520 fps | 98.2% |
| Accurate LT-30 | <<locked>> | 82% | 54,099 psi | 90% | 2408 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,374 psi | 89% | 2546 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 54,070 psi | 90% | 2536 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 88% | 52,562 psi | 87% | 2503 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 52,301 psi | 87% | 2480 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,172 psi | 90% | 2595 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 52,301 psi | 87% | 2641 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,374 psi | 89% | 2556 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,215 psi | 90% | 2461 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,259 psi | 90% | 2575 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,485 psi | 77% | 2523 fps | 98.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,635 psi | 89% | 2661 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 52,910 psi | 88% | 2405 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 52,881 psi | 88% | 2556 fps | 99.1% |
| Bofors RP3 | <<locked>> | 96% | 53,838 psi | 89% | 2575 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 86% | 51,503 psi | 86% | 2444 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 51,285 psi | 85% | 2530 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 52,924 psi | 88% | 2612 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 84% | 53,084 psi | 88% | 2497 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,375 psi | 90% | 2526 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 51,822 psi | 86% | 2536 fps | 98.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 50,241 psi | 83% | 2566 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 90% | 53,809 psi | 89% | 2552 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,641 psi | 71% | 2418 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,214 psi | 87% | 2579 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,824 psi | 58% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 51,677 psi | 86% | 2510 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 52,997 psi | 88% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 53,751 psi | 89% | 2526 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,462 psi | 90% | 2507 fps | 96.9% |
| IMR 4198 | <<locked>> | 82% | 51,735 psi | 86% | 2388 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,519 psi | 89% | 2523 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,788 psi | 74% | 2470 fps | 97.9% |
| IMR 4895 | <<locked>> | 92% | 52,083 psi | 87% | 2559 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 52,562 psi | 87% | 2503 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 52,460 psi | 87% | 2490 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 52,301 psi | 87% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,548 psi | 89% | 2480 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 53,229 psi | 88% | 2523 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,938 psi | 86% | 2510 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,487 psi | 82% | 2493 fps | 96.2% |
| Norma 201 | <<locked>> | 90% | 51,982 psi | 86% | 2493 fps | 100% |
| Norma 202 | <<locked>> | 90% | 52,504 psi | 87% | 2500 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,403 psi | 89% | 2566 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 46,833 psi | 78% | 2513 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 94% | 53,505 psi | 89% | 2589 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,905 psi | 76% | 2500 fps | 96.1% |
| Ramshot TAC | <<locked>> | 88% | 52,895 psi | 88% | 2513 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 52,069 psi | 87% | 2533 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 53,664 psi | 89% | 2503 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,128 psi | 58% | 1545 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 52,359 psi | 87% | 2487 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 52,344 psi | 87% | 2516 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,230 psi | 90% | 2638 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,592 psi | 89% | 2667 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,557 psi | 77% | 2539 fps | 97.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,543 psi | 79% | 2556 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 88% | 53,287 psi | 89% | 2480 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 52,272 psi | 87% | 2490 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 53,301 psi | 89% | 2559 fps | 99.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,938 psi | 86% | 2510 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 52,301 psi | 87% | 2523 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,229 psi | 88% | 2523 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,487 psi | 82% | 2493 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 52,011 psi | 86% | 2461 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 51,880 psi | 86% | 2572 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 51,967 psi | 86% | 2438 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,433 psi | 90% | 2539 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 51,663 psi | 86% | 2516 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,128 psi | 90% | 2444 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,534 psi | 89% | 2438 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,547 psi | 87% | 2470 fps | 96.5% |
| Somchem S321 | <<locked>> | 86% | 53,635 psi | 89% | 2536 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,113 psi | 88% | 2444 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,056 psi | 90% | 2536 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 54,085 psi | 90% | 2559 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,582 psi | 69% | 2467 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 86% | 54,070 psi | 90% | 2415 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,099 psi | 90% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 51,474 psi | 86% | 2464 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 52,968 psi | 88% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 52,098 psi | 87% | 2500 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,284 psi | 82% | 2513 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 88% | 53,142 psi | 88% | 2503 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 54,360 psi | 90% | 2523 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,138 psi | 80% | 2516 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,635 psi | 58% | 2343 fps | 95.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,169 psi | 83% | 2500 fps | 99.7% |
| Winchester 748 | <<locked>> | 88% | 52,214 psi | 87% | 2543 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 50,589 psi | 84% | 2569 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 90% | 51,024 psi | 85% | 2523 fps | 99.8% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 42,525 psi | 71% | 2297 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,151 psi | 77% | 2392 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,940 psi | 58% | 2221 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,423 psi | 69% | 2352 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 33,025 psi | 55% | 2208 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 35,360 psi | 59% | 2316 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 50,734 psi | 84% | 2362 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,088 psi | 65% | 2310 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 33,170 psi | 55% | 2172 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,118 psi | 68% | 2323 fps | 99% |
| Alliant AR-Comp | <<locked>> | 80% | 40,205 psi | 67% | 2316 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,645 psi | 79% | 2500 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 35,172 psi | 58% | 2316 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,256 psi | 54% | 2192 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,109 psi | 80% | 2382 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,998 psi | 58% | 2247 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 92% | 36,680 psi | 61% | 2333 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 31,908 psi | 53% | 2251 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,792 psi | 83% | 2365 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,840 psi | 63% | 2306 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 31,647 psi | 53% | 2192 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,120 psi | 72% | 2316 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,189 psi | 65% | 2336 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,801 psi | 71% | 2454 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 46,673 psi | 78% | 2411 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,442 psi | 79% | 2434 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,420 psi | 62% | 2290 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 98% | 47,036 psi | 78% | 2513 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 39,392 psi | 65% | 2323 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,473 psi | 52% | 2192 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,186 psi | 58% | 2290 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 43% | 1348 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,739 psi | 63% | 2277 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 38,392 psi | 64% | 2323 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,766 psi | 58% | 2201 fps | 95.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 47,950 psi | 80% | 2408 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 48,646 psi | 81% | 2346 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 47,413 psi | 79% | 2431 fps | 95.3% |
| IMR 4831 | <<locked>> | 92% | 34,461 psi | 57% | 2277 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 35,810 psi | 59% | 2277 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 41,118 psi | 68% | 2323 fps | 99% |
| Lovex D073.5 | <<locked>> | 80% | 45,992 psi | 76% | 2398 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 37,304 psi | 62% | 2290 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 39,639 psi | 66% | 2257 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 34,519 psi | 57% | 2211 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 40,915 psi | 68% | 2333 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 46,383 psi | 77% | 2444 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 38,189 psi | 63% | 2270 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 38,203 psi | 63% | 2280 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,403 psi | 57% | 2241 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 36,434 psi | 61% | 2323 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,765 psi | 56% | 2244 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 98% | 43,366 psi | 72% | 2454 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 40,901 psi | 68% | 2320 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,943 psi | 66% | 2339 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,483 psi | 74% | 2365 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,092 psi | 43% | 1378 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,963 psi | 76% | 2395 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 43,192 psi | 72% | 2372 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,897 psi | 60% | 2326 fps | 96.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,718 psi | 49% | 2205 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,101 psi | 63% | 2388 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 41,727 psi | 69% | 2451 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 41,974 psi | 70% | 2313 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,492 psi | 61% | 2231 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 29,675 psi | 49% | 2139 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 40,915 psi | 68% | 2333 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,304 psi | 62% | 2290 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 34,519 psi | 57% | 2211 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 98% | 46,383 psi | 77% | 2444 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,660 psi | 81% | 2411 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 32,967 psi | 55% | 2234 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,863 psi | 81% | 2398 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,914 psi | 65% | 2293 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,463 psi | 62% | 2280 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,987 psi | 66% | 2238 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,880 psi | 55% | 2123 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 46,021 psi | 76% | 2379 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 43,947 psi | 73% | 2392 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 39,320 psi | 65% | 2241 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,551 psi | 64% | 2293 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 30,835 psi | 51% | 2152 fps | 95.6% |
| Somchem S365 | <<locked>> | 88% | 28,616 psi | 48% | 2178 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 45,324 psi | 75% | 2300 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,118 psi | 67% | 2238 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,433 psi | 59% | 2221 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,114 psi | 60% | 2224 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,153 psi | 48% | 2096 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 35,853 psi | 60% | 2277 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 40,944 psi | 68% | 2316 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 80% | 34,795 psi | 58% | 2215 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 37,275 psi | 62% | 2326 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 98% | 32,648 psi | 54% | 2297 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,923 psi | 53% | 2165 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 39,987 psi | 66% | 2356 fps | 99.5% |
| Winchester 760 | <<locked>> | 98% | 47,311 psi | 79% | 2520 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,782 psi | 61% | 2283 fps | 97.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 97 powders for .308 Win. Ackley Improved loaded with the .308 | 190gr | Barnes Barnes Original FN FB. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,667 fps; across all powders the maximum-charge window runs from 1,509 fps to 2,667 fps. Accurate 4350 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 (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.