Load Specifications
Bullet Manufacturer:Berry's
Bullet Weight:220 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:1:13.0
Load data in caliber .308 Win. Ackley Improved with .300 | 220gr | Berry's Spire Point bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and Alliant Reloder-17.
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>> | 86% | 52,837 psi | 88% | 2221 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,039 psi | 85% | 2244 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,070 psi | 90% | 2280 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 52,866 psi | 88% | 2300 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,128 psi | 90% | 2283 fps | 97% |
| Accurate 4064 | <<locked>> | 94% | 53,577 psi | 89% | 2316 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,182 psi | 82% | 2343 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 51,967 psi | 86% | 2310 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 52,721 psi | 88% | 2306 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 51,213 psi | 85% | 2267 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 51,372 psi | 85% | 2247 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 52,605 psi | 87% | 2349 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 50,705 psi | 84% | 2402 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 51,982 psi | 86% | 2323 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 52,924 psi | 88% | 2224 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 52,765 psi | 88% | 2339 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,298 psi | 80% | 2346 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,243 psi | 87% | 2425 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,185 psi | 57% | 2129 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 37,536 psi | 62% | 2247 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 51,140 psi | 85% | 2320 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 52,504 psi | 87% | 2339 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 53,185 psi | 88% | 2310 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,171 psi | 88% | 2254 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,171 psi | 88% | 2336 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 51,227 psi | 85% | 2369 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 51,779 psi | 86% | 2260 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 52,562 psi | 87% | 2287 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,650 psi | 89% | 2346 fps | 99.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,373 psi | 87% | 2385 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 98% | 53,635 psi | 89% | 2352 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 88% | 52,446 psi | 87% | 2316 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,396 psi | 74% | 2244 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,186 psi | 90% | 2385 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 53,330 psi | 89% | 2415 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,940 psi | 58% | 1365 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,519 psi | 89% | 2316 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 51,953 psi | 86% | 2300 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 52,112 psi | 87% | 2290 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 52,620 psi | 87% | 2274 fps | 97.6% |
| IMR 4198 | <<locked>> | 82% | 53,243 psi | 88% | 2188 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 49,559 psi | 82% | 2283 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 96% | 51,967 psi | 86% | 2293 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,789 psi | 78% | 2297 fps | 99.1% |
| IMR 4895 | <<locked>> | 92% | 54,070 psi | 90% | 2365 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 51,213 psi | 85% | 2267 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 51,140 psi | 85% | 2257 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 51,068 psi | 85% | 2290 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 52,025 psi | 86% | 2247 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 51,706 psi | 86% | 2287 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,969 psi | 90% | 2329 fps | 98.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,358 psi | 85% | 2316 fps | 97.7% |
| Norma 201 | <<locked>> | 90% | 53,954 psi | 90% | 2303 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,273 psi | 90% | 2303 fps | 100% |
| Norma 203B | <<locked>> | 92% | 51,924 psi | 86% | 2329 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 48,791 psi | 81% | 2336 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 52,257 psi | 87% | 2356 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,863 psi | 80% | 2329 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 51,488 psi | 86% | 2287 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,867 psi | 89% | 2343 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,098 psi | 87% | 2270 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,375 psi | 59% | 1401 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,983 psi | 90% | 2290 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,375 psi | 90% | 2333 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 52,649 psi | 87% | 2395 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 52,286 psi | 87% | 2425 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,631 psi | 81% | 2362 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,255 psi | 82% | 2379 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 86% | 52,025 psi | 86% | 2247 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,404 psi | 90% | 2300 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 52,011 psi | 86% | 2326 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 53,185 psi | 88% | 2310 fps | 97.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,969 psi | 90% | 2329 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 51,068 psi | 85% | 2290 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 51,706 psi | 86% | 2287 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,358 psi | 85% | 2316 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,795 psi | 89% | 2270 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,911 psi | 90% | 2382 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,925 psi | 90% | 2241 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,852 psi | 88% | 2306 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,316 psi | 89% | 2326 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 52,823 psi | 88% | 2215 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,431 psi | 87% | 2215 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 51,155 psi | 85% | 2247 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 51,909 psi | 86% | 2297 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 51,779 psi | 86% | 2211 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 52,286 psi | 87% | 2300 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 52,895 psi | 88% | 2326 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,381 psi | 72% | 2293 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 52,663 psi | 87% | 2182 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 52,939 psi | 88% | 2201 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,519 psi | 89% | 2267 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 51,401 psi | 85% | 2247 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,114 psi | 90% | 2310 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,459 psi | 85% | 2333 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 51,532 psi | 86% | 2267 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 52,765 psi | 88% | 2287 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,169 psi | 83% | 2336 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,405 psi | 60% | 2192 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,040 psi | 86% | 2320 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 54,317 psi | 90% | 2349 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,721 psi | 88% | 2388 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,429 psi | 51% | 2113 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,055 psi | 88% | 2336 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% | 44,077 psi | 73% | 2113 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,892 psi | 80% | 2205 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,709 psi | 61% | 2054 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,149 psi | 72% | 2175 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,732 psi | 79% | 2195 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 34,708 psi | 58% | 2051 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 32,576 psi | 54% | 2073 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 40,335 psi | 67% | 2136 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 34,476 psi | 57% | 2018 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,337 psi | 70% | 2142 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 42,032 psi | 70% | 2136 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,269 psi | 82% | 2306 fps | 100% |
| Alliant Power Pro 2000-MR | 37.5 gr | 80% | 36,347 psi | 60% | 2156 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,823 psi | 56% | 2037 fps | 98.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,937 psi | 83% | 2188 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,216 psi | 60% | 2083 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 31,763 psi | 53% | 2041 fps | 95.1% |
| Alliant Reloder-17 | 37 gr | 80% | 29,153 psi | 48% | 2008 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 28,645 psi | 48% | 2001 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 34,969 psi | 58% | 2195 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,218 psi | 65% | 2139 fps | 97.7% |
| Bofors RP3 | <<locked>> | 80% | 33,011 psi | 55% | 2037 fps | 98.2% |
| Bofors RP7 | <<locked>> | 92% | 44,237 psi | 73% | 2182 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,440 psi | 74% | 2136 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,596 psi | 67% | 2162 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,628 psi | 74% | 2277 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 80% | 48,486 psi | 81% | 2221 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,327 psi | 82% | 2247 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 34,084 psi | 57% | 2037 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 92% | 40,495 psi | 67% | 2205 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 47,601 psi | 79% | 2267 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,654 psi | 68% | 2146 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 27,224 psi | 45% | 1913 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,564 psi | 61% | 2123 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 96% | 46,572 psi | 77% | 2316 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,165 psi | 43% | 1220 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,160 psi | 65% | 2110 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 40,176 psi | 67% | 2146 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,158 psi | 60% | 2044 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 41,263 psi | 69% | 2103 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 50,241 psi | 83% | 2152 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 44,048 psi | 73% | 2201 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 43,410 psi | 72% | 2169 fps | 95.5% |
| IMR 4831 | <<locked>> | 88% | 31,749 psi | 53% | 2037 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 37,043 psi | 62% | 2110 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 42,337 psi | 70% | 2142 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 47,616 psi | 79% | 2211 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,015 psi | 65% | 2123 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 41,060 psi | 68% | 2090 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 35,984 psi | 60% | 2051 fps | 99% |
| Lovex S065 | <<locked>> | 88% | 37,565 psi | 62% | 2080 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 40,147 psi | 67% | 2146 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 39,769 psi | 66% | 2103 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 39,914 psi | 66% | 2110 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,592 psi | 59% | 2077 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 33,504 psi | 56% | 2077 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 34,925 psi | 58% | 2083 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 94% | 39,697 psi | 66% | 2195 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 42,279 psi | 70% | 2149 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,640 psi | 69% | 2169 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,818 psi | 76% | 2185 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,368 psi | 44% | 1250 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,500 psi | 79% | 2208 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 39,479 psi | 66% | 2113 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,579 psi | 62% | 2165 fps | 97.9% |
| ReloadSwiss RS 60 | 37 gr | 80% | 31,038 psi | 52% | 2060 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 32,532 psi | 54% | 2083 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 35,433 psi | 59% | 2136 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 43,642 psi | 73% | 2136 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,884 psi | 63% | 2064 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,241 psi | 52% | 1995 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 44,237 psi | 73% | 2182 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 37,565 psi | 62% | 2080 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,015 psi | 65% | 2123 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 35,984 psi | 60% | 2051 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 40,147 psi | 67% | 2146 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,140 psi | 83% | 2224 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,213 psi | 54% | 2034 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,444 psi | 84% | 2201 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,292 psi | 67% | 2126 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,986 psi | 65% | 2116 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,205 psi | 68% | 2060 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,011 psi | 57% | 1959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 41,800 psi | 69% | 2119 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 45,484 psi | 76% | 2211 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 40,857 psi | 68% | 2067 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,001 psi | 66% | 2126 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 32,271 psi | 54% | 2001 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 24,743 psi | 41% | 1900 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 46,673 psi | 78% | 2110 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,408 psi | 69% | 2057 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,869 psi | 61% | 2047 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,797 psi | 63% | 2060 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,632 psi | 51% | 1952 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 86% | 32,866 psi | 55% | 2031 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,337 psi | 70% | 2139 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 36,129 psi | 60% | 2051 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 34,156 psi | 57% | 2077 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 94% | 30,226 psi | 50% | 2060 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,267 psi | 45% | 1886 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 41,611 psi | 69% | 2178 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 40,495 psi | 67% | 2205 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 28,631 psi | 48% | 2060 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,276 psi | 64% | 2119 fps | 98.9% |
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 104 powders for .308 Win. Ackley Improved loaded with the .300 | 220gr | Berry's Spire Point. Alliant Reloder-17 delivers the highest muzzle velocity at 2,425 fps; across all powders the maximum-charge window runs from 1,365 fps to 2,425 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:13.0 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for .308 Win. Ackley Improved with the .300 | 220gr | Berry's Spire Point 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.