Load Specifications
Bullet Manufacturer:Prvi Partizan
Bullet Weight:250 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338-06 A-Square load data
Case Length (l3):2.494"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:69 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,091 psi
Recommended Twist Rate:1:12.5
Load data in caliber .338-06 A-Square with .338 | 250gr | Prvi Partizan FMJ-BT bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and Hodgdon LEVERevolution.
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>> | 92% | 57,029 psi | 90% | 2297 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,215 psi | 86% | 2343 fps | 99.3% |
| Accurate 2230 | <<locked>> | 82% | 54,911 psi | 87% | 2352 fps | 99.5% |
| Accurate 2460 | <<locked>> | 88% | 55,724 psi | 88% | 2326 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 54,027 psi | 86% | 2316 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,243 psi | 84% | 2336 fps | 100% |
| Accurate 2700 | <<locked>> | 96% | 55,230 psi | 88% | 2303 fps | 95.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 56,884 psi | 90% | 2385 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,293 psi | 67% | 2267 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 84% | 54,114 psi | 86% | 2215 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,505 psi | 86% | 2234 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 56,028 psi | 89% | 2382 fps | 99.8% |
| ADI AR 2207 | <<locked>> | 82% | 55,912 psi | 89% | 2231 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 56,797 psi | 90% | 2375 fps | 99.5% |
| ADI AR 2219 | <<locked>> | 84% | 54,230 psi | 86% | 2320 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 55,463 psi | 88% | 2346 fps | 100% |
| Alliant AR-Comp | <<locked>> | 92% | 54,708 psi | 87% | 2320 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 56,956 psi | 90% | 2431 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 55,434 psi | 88% | 2477 fps | 99.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 55,883 psi | 89% | 2395 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,070 psi | 86% | 2270 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 56,942 psi | 90% | 2415 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,207 psi | 68% | 2274 fps | 97.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2402 fps | 99.6% |
| Alliant Reloder-7 | <<locked>> | 82% | 56,797 psi | 90% | 2247 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 56,536 psi | 90% | 2260 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 55,535 psi | 88% | 2395 fps | 99.3% |
| Bofors RP3ᴾ | <<locked>> | 100% | 56,115 psi | 89% | 2408 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,694 psi | 87% | 2293 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,041 psi | 86% | 2372 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 55,680 psi | 88% | 2451 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 88% | 56,420 psi | 89% | 2343 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,983 psi | 86% | 2329 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,273 psi | 86% | 2372 fps | 98.6% |
| Hodgdon H4198 | <<locked>> | 82% | 56,246 psi | 89% | 2254 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 56,463 psi | 89% | 2392 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,160 psi | 62% | 2175 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,752 psi | 87% | 2418 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,490 psi | 55% | 1368 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,404 psi | 86% | 2349 fps | 99.8% |
| IMR 3031 | <<locked>> | 94% | 55,288 psi | 88% | 2372 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,550 psi | 90% | 2362 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 94% | 54,259 psi | 86% | 2303 fps | 96.5% |
| IMR 4198 | <<locked>> | 86% | 54,650 psi | 87% | 2234 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 52,881 psi | 84% | 2316 fps | 96.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,582 psi | 64% | 2221 fps | 96.8% |
| IMR 4895 | <<locked>> | 96% | 54,752 psi | 87% | 2398 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 92% | 55,463 psi | 88% | 2346 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 55,782 psi | 88% | 2333 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 55,709 psi | 88% | 2336 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 54,752 psi | 87% | 2362 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 56,391 psi | 89% | 2320 fps | 99.8% |
| Lovex S062 | <<locked>> | 98% | 55,695 psi | 88% | 2359 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,167 psi | 76% | 2267 fps | 96.8% |
| Norma 200 | <<locked>> | 82% | 53,882 psi | 85% | 2244 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,766 psi | 87% | 2336 fps | 100% |
| Norma 202 | <<locked>> | 94% | 54,853 psi | 87% | 2339 fps | 100% |
| Norma 203B | <<locked>> | 98% | 55,970 psi | 89% | 2405 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 42,757 psi | 68% | 2264 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 98% | 56,231 psi | 89% | 2425 fps | 99.7% |
| Ramshot TAC | <<locked>> | 92% | 56,260 psi | 89% | 2362 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,911 psi | 87% | 2375 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 90% | 57,000 psi | 90% | 2349 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,708 psi | 55% | 1398 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,405 psi | 88% | 2333 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 55,129 psi | 87% | 2356 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 56,492 psi | 90% | 2467 fps | 99.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,837 psi | 84% | 2454 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,250 psi | 67% | 2280 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 43,932 psi | 70% | 2297 fps | 96% |
| Rottweil R 901 | <<locked>> | 92% | 55,738 psi | 88% | 2320 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,085 psi | 87% | 2333 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,069 psi | 83% | 2352 fps | 99.8% |
| Shooters World AR Plus | <<locked>> | 82% | 55,782 psi | 88% | 2333 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,167 psi | 76% | 2267 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 94% | 54,752 psi | 87% | 2362 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 55,695 psi | 88% | 2359 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,463 psi | 88% | 2310 fps | 99.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,984 psi | 87% | 2005 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,607 psi | 87% | 2329 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 54,230 psi | 86% | 2408 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,056 psi | 87% | 2287 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,896 psi | 85% | 2336 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,273 psi | 86% | 2359 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,143 psi | 86% | 2254 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 56,521 psi | 90% | 2283 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 56,782 psi | 90% | 2379 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 56,014 psi | 89% | 2287 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 56,869 psi | 90% | 2375 fps | 99.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,055 psi | 84% | 2352 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,116 psi | 60% | 2221 fps | 99% |
| Vihtavuori N120 | <<locked>> | 82% | 55,796 psi | 88% | 2185 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 53,954 psi | 86% | 2224 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 57,072 psi | 90% | 2274 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,795 psi | 85% | 2303 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 55,550 psi | 88% | 2323 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,097 psi | 81% | 2297 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,353 psi | 72% | 2267 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 92% | 56,144 psi | 89% | 2346 fps | 100% |
| Vihtavuori N540 | <<locked>> | 98% | 56,913 psi | 90% | 2359 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,961 psi | 70% | 2267 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,470 psi | 74% | 2257 fps | 99.2% |
| Winchester 748 | <<locked>> | 92% | 54,824 psi | 87% | 2385 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,751 psi | 85% | 2365 fps | 99.8% |
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% | 39,668 psi | 63% | 2080 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,763 psi | 80% | 2297 fps | 98.9% |
| Accurate 2230 | <<locked>> | 80% | 51,387 psi | 81% | 2310 fps | 99.2% |
| Accurate 2460 | <<locked>> | 80% | 42,888 psi | 68% | 2162 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 31,995 psi | 51% | 2005 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 37,927 psi | 60% | 2119 fps | 99.5% |
| Accurate 2700 | <<locked>> | 94% | 51,866 psi | 82% | 2260 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 30,269 psi | 48% | 1991 fps | 99% |
| Accurate 4350 | <<locked>> | 96% | 36,724 psi | 58% | 2175 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 47,993 psi | 76% | 2142 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,312 psi | 77% | 2159 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 36,332 psi | 58% | 2083 fps | 96.8% |
| ADI AR 2207 | <<locked>> | 80% | 52,402 psi | 83% | 2192 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 35,157 psi | 56% | 2047 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 47,572 psi | 75% | 2238 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,305 psi | 61% | 2096 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 36,927 psi | 59% | 2096 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,077 psi | 70% | 2254 fps | 99.1% |
| Alliant Power Pro 2000-MR | 44.1 gr | 84% | 37,260 psi | 59% | 2182 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,907 psi | 47% | 1978 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,063 psi | 71% | 2159 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,476 psi | 55% | 2070 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 36,100 psi | 57% | 2139 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 86% | 31,372 psi | 50% | 2070 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 53,287 psi | 84% | 2208 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,760 psi | 74% | 2146 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 35,070 psi | 56% | 2080 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 28,950 psi | 46% | 1972 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,480 psi | 64% | 2093 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,143 psi | 57% | 2110 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,755 psi | 63% | 2215 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 80% | 43,656 psi | 69% | 2185 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,092 psi | 70% | 2201 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 39,305 psi | 62% | 2152 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 52,765 psi | 84% | 2215 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,535 psi | 58% | 2093 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 30,777 psi | 49% | 2008 fps | 95% |
| Hodgdon LEVERevolution | 41.2 gr | 80% | 32,663 psi | 52% | 2064 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 41% | 1220 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,317 psi | 56% | 2057 fps | 97% |
| IMR 3031 | <<locked>> | 80% | 35,375 psi | 56% | 2100 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 34,577 psi | 55% | 2031 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 47,993 psi | 76% | 2218 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 45,745 psi | 73% | 2126 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 49,676 psi | 79% | 2274 fps | 95.5% |
| IMR 4831 | <<locked>> | 96% | 35,897 psi | 57% | 2136 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 33,025 psi | 52% | 2051 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 80% | 38,305 psi | 61% | 2096 fps | 98.4% |
| Lovex D073.4 | <<locked>> | 80% | 51,909 psi | 82% | 2287 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 42,612 psi | 68% | 2165 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 34,403 psi | 55% | 2067 fps | 99% |
| Lovex S060 | <<locked>> | 80% | 37,246 psi | 59% | 2041 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 32,024 psi | 51% | 1995 fps | 97% |
| Lovex S065 | <<locked>> | 96% | 42,801 psi | 68% | 2185 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 50,531 psi | 80% | 2205 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,549 psi | 56% | 2047 fps | 97.9% |
| Norma 202 | <<locked>> | 80% | 35,679 psi | 57% | 2064 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 31,720 psi | 50% | 2018 fps | 95.3% |
| Norma URP | <<locked>> | 96% | 37,913 psi | 60% | 2178 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 82% | 33,301 psi | 53% | 2067 fps | 95.5% |
| Ramshot TAC | <<locked>> | 82% | 40,538 psi | 64% | 2136 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,028 psi | 59% | 2110 fps | 97% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,597 psi | 66% | 2136 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 41% | 1247 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,033 psi | 68% | 2169 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 45,382 psi | 72% | 2224 fps | 95.4% |
| ReloadSwiss RS 52 | 40.7 gr | 80% | 33,199 psi | 53% | 2096 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 27,659 psi | 44% | 1982 fps | 96% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 36,985 psi | 59% | 2188 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 41,017 psi | 65% | 2244 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 39,320 psi | 62% | 2093 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 33,997 psi | 54% | 2011 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 29,051 psi | 46% | 1969 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 51,909 psi | 82% | 2287 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 96% | 42,801 psi | 68% | 2185 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,403 psi | 55% | 2067 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 32,024 psi | 51% | 1995 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,455 psi | 72% | 2182 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,272 psi | 83% | 1978 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,964 psi | 76% | 2247 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 32,518 psi | 52% | 2054 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,803 psi | 73% | 2172 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 38,392 psi | 61% | 2110 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,867 psi | 55% | 2060 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,536 psi | 59% | 2024 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,690 psi | 49% | 1916 fps | 99.3% |
| Somchem S321 | <<locked>> | 80% | 40,770 psi | 65% | 2159 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 36,767 psi | 58% | 2028 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 35,636 psi | 56% | 2067 fps | 96.5% |
| Somchem S355 | <<locked>> | 82% | 30,400 psi | 48% | 1982 fps | 95.4% |
| Somchem S365 | <<locked>> | 90% | 28,050 psi | 44% | 2001 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 80% | 52,315 psi | 83% | 2149 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,612 psi | 68% | 2083 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,594 psi | 60% | 2028 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,750 psi | 52% | 2008 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,678 psi | 53% | 2011 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 27,064 psi | 43% | 1893 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 94% | 37,449 psi | 59% | 2136 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 38,029 psi | 60% | 2090 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 80% | 32,329 psi | 51% | 2001 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 96% | 38,754 psi | 61% | 2182 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 31,531 psi | 50% | 1991 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 36,753 psi | 58% | 2123 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,779 psi | 54% | 2057 fps | 96.7% |
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 .338-06 A-Square loaded with the .338 | 250gr | Prvi Partizan FMJ-BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,477 fps; across all powders the maximum-charge window runs from 1,368 fps to 2,477 fps. Accurate 4064 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 (435 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, Accurate 4350, ADI AR 2208 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 Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon LEVERevolution rank at the top here: for .338-06 A-Square with the .338 | 250gr | Prvi Partizan FMJ-BT 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.