Load Specifications
Load data in caliber .338-06 A-Square with .338 | 250gr | Alaska Bullet Works Kodiak PP SPBC bullet and 105 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.
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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>> | 88% | 54,128 psi | 86% | 2293 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 55,825 psi | 88% | 2356 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,636 psi | 87% | 2346 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,680 psi | 88% | 2398 fps | 100% |
| Accurate 2700 | <<locked>> | 98% | 56,492 psi | 90% | 2349 fps | 96.6% |
| Accurate 4064 | <<locked>> | 96% | 54,563 psi | 86% | 2388 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,427 psi | 74% | 2356 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 82% | 53,969 psi | 86% | 2244 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,389 psi | 86% | 2267 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,173 psi | 89% | 2415 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 53,911 psi | 85% | 2372 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 82% | 54,418 psi | 86% | 2349 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,724 psi | 88% | 2379 fps | 100% |
| Alliant AR-Comp | <<locked>> | 90% | 55,492 psi | 88% | 2352 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,521 psi | 88% | 2516 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,507 psi | 90% | 2431 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,027 psi | 86% | 2293 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 53,882 psi | 85% | 2408 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,311 psi | 73% | 2362 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,417 psi | 85% | 2490 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 32,634 psi | 52% | 2133 fps | 96.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,202 psi | 89% | 2283 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 55,840 psi | 89% | 2431 fps | 99.6% |
| Bofors RP3 | <<locked>> | 98% | 56,971 psi | 90% | 2448 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 54,244 psi | 86% | 2369 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,447 psi | 86% | 2323 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,375 psi | 86% | 2405 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 56,188 psi | 89% | 2490 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 86% | 56,449 psi | 89% | 2372 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,056 psi | 86% | 2359 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,940 psi | 87% | 2415 fps | 99.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2402 fps | 96.6% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 55,027 psi | 87% | 2418 fps | 96% |
| Hodgdon H4895 | <<locked>> | 92% | 56,652 psi | 90% | 2425 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,554 psi | 67% | 2264 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,347 psi | 88% | 2454 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 51,082 psi | 81% | 2428 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,795 psi | 55% | 1398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,839 psi | 87% | 2388 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 56,159 psi | 89% | 2408 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,797 psi | 90% | 2398 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,041 psi | 86% | 2339 fps | 97.1% |
| IMR 4198 | <<locked>> | 84% | 54,404 psi | 86% | 2257 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 56,159 psi | 89% | 2398 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,237 psi | 70% | 2306 fps | 98.1% |
| IMR 4895 | <<locked>> | 94% | 55,245 psi | 88% | 2434 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 90% | 55,724 psi | 88% | 2379 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 55,956 psi | 89% | 2369 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,347 psi | 88% | 2395 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,434 psi | 89% | 2356 fps | 99.9% |
| Lovex S062 | <<locked>> | 96% | 56,173 psi | 89% | 2395 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,648 psi | 82% | 2349 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 49,037 psi | 78% | 2333 fps | 96.5% |
| Norma 201 | <<locked>> | 92% | 55,085 psi | 87% | 2369 fps | 100% |
| Norma 202 | <<locked>> | 92% | 55,564 psi | 88% | 2375 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,565 psi | 90% | 2441 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 46,383 psi | 74% | 2349 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 96% | 57,029 psi | 90% | 2467 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 45,701 psi | 72% | 2343 fps | 96.4% |
| Ramshot TAC | <<locked>> | 90% | 56,144 psi | 89% | 2395 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,056 psi | 87% | 2408 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 88% | 57,087 psi | 90% | 2385 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,288 psi | 56% | 1434 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,564 psi | 88% | 2365 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,521 psi | 88% | 2398 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,650 psi | 85% | 2464 fps | 99.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 57,029 psi | 90% | 2539 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,021 psi | 73% | 2372 fps | 98.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,137 psi | 75% | 2388 fps | 97.6% |
| Rottweil R 901 | <<locked>> | 90% | 56,173 psi | 89% | 2352 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,361 psi | 88% | 2365 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 56,463 psi | 89% | 2434 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 54,244 psi | 86% | 2369 fps | 96.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,648 psi | 82% | 2349 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,347 psi | 88% | 2395 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,173 psi | 89% | 2395 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 49,037 psi | 78% | 2333 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,259 psi | 88% | 2339 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,520 psi | 86% | 2359 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 54,781 psi | 87% | 2448 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,984 psi | 87% | 2313 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,302 psi | 86% | 2375 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,534 psi | 86% | 2392 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 53,940 psi | 85% | 2280 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 56,724 psi | 90% | 2313 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 52,141 psi | 83% | 2310 fps | 96.7% |
| Somchem S321 | <<locked>> | 88% | 57,014 psi | 90% | 2411 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 56,217 psi | 89% | 2320 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,534 psi | 85% | 2369 fps | 99.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 56,956 psi | 90% | 2431 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,321 psi | 65% | 2310 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 86% | 53,882 psi | 85% | 2251 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 53,896 psi | 85% | 2270 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,563 psi | 86% | 2336 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,970 psi | 89% | 2356 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,216 psi | 88% | 2375 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,936 psi | 78% | 2349 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 90% | 56,275 psi | 89% | 2379 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 53,969 psi | 86% | 2356 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 47,747 psi | 76% | 2352 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 34,360 psi | 54% | 2195 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 49,908 psi | 79% | 2339 fps | 99.8% |
| Winchester 748 | <<locked>> | 90% | 55,405 psi | 88% | 2418 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2402 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,288 psi | 86% | 2402 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% | 42,467 psi | 67% | 2142 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,876 psi | 73% | 2231 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,896 psi | 55% | 2077 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,624 psi | 63% | 2182 fps | 99.9% |
| Accurate 2700 | <<locked>> | 94% | 49,588 psi | 79% | 2260 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 32,996 psi | 52% | 2067 fps | 99.6% |
| Accurate 4350 | <<locked>> | 92% | 35,070 psi | 56% | 2165 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 50,575 psi | 80% | 2205 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,966 psi | 81% | 2224 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,841 psi | 62% | 2159 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 33,243 psi | 53% | 2034 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 50,879 psi | 81% | 2306 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,872 psi | 65% | 2169 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 40,001 psi | 63% | 2162 fps | 100% |
| Alliant Power Pro 2000-MR | 45.1 gr | 80% | 35,041 psi | 56% | 2169 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,198 psi | 51% | 2051 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,877 psi | 76% | 2221 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,766 psi | 55% | 2100 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 34,258 psi | 54% | 2133 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 82% | 29,718 psi | 47% | 2057 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 98% | 30,821 psi | 49% | 2090 fps | 95.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,516 psi | 78% | 2208 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,608 psi | 60% | 2156 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 31,575 psi | 50% | 2051 fps | 97% |
| Bofors RP7 | <<locked>> | 96% | 47,892 psi | 76% | 2280 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,004 psi | 68% | 2165 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,030 psi | 62% | 2185 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,670 psi | 68% | 2293 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 80% | 46,688 psi | 74% | 2251 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,224 psi | 75% | 2270 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 37,188 psi | 59% | 2142 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 96% | 43,961 psi | 70% | 2306 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 98% | 51,576 psi | 82% | 2372 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,117 psi | 62% | 2169 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 29,370 psi | 47% | 2005 fps | 95.1% |
| Hodgdon LEVERevolution | 44.2 gr | 80% | 35,027 psi | 56% | 2139 fps | 98% |
| Hodgdon Superformance | <<locked>> | 98% | 47,819 psi | 76% | 2375 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 41% | 1250 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,753 psi | 60% | 2129 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 38,247 psi | 61% | 2169 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,824 psi | 55% | 2060 fps | 96.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 44,918 psi | 71% | 2208 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 48,428 psi | 77% | 2185 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 46,992 psi | 74% | 2270 fps | 95.5% |
| IMR 4831 | <<locked>> | 92% | 34,258 psi | 54% | 2133 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 35,549 psi | 56% | 2126 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,872 psi | 65% | 2169 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 45,701 psi | 72% | 2238 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 37,231 psi | 59% | 2142 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 39,668 psi | 63% | 2113 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 34,563 psi | 55% | 2070 fps | 98.1% |
| Lovex S065 | <<locked>> | 92% | 40,683 psi | 64% | 2182 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 43,308 psi | 69% | 2244 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 38,159 psi | 60% | 2123 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 38,145 psi | 60% | 2133 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 34,142 psi | 54% | 2093 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 33,968 psi | 54% | 2129 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 33,591 psi | 53% | 2100 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 98% | 42,859 psi | 68% | 2297 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 40,640 psi | 64% | 2169 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,755 psi | 63% | 2185 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,295 psi | 70% | 2211 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,092 psi | 41% | 1276 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,745 psi | 73% | 2238 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 42,960 psi | 68% | 2218 fps | 95.4% |
| ReloadSwiss RS 52 | 43.7 gr | 80% | 35,853 psi | 57% | 2178 fps | 96.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,718 psi | 47% | 2067 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 35,404 psi | 56% | 2185 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 38,624 psi | 61% | 2238 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 41,959 psi | 67% | 2159 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 36,361 psi | 58% | 2083 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 29,573 psi | 47% | 2001 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 96% | 47,892 psi | 76% | 2280 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 40,683 psi | 64% | 2182 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,231 psi | 59% | 2142 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 34,563 psi | 55% | 2070 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 96% | 43,308 psi | 69% | 2244 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,486 psi | 77% | 2254 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,140 psi | 81% | 2316 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 30,850 psi | 49% | 2044 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,660 psi | 77% | 2238 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 38,682 psi | 61% | 2142 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,391 psi | 59% | 2133 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,798 psi | 63% | 2087 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,692 psi | 52% | 1978 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 45,687 psi | 72% | 2224 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 43,685 psi | 69% | 2234 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 39,291 psi | 62% | 2093 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,276 psi | 61% | 2142 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 30,806 psi | 49% | 2014 fps | 96.1% |
| Somchem S365 | <<locked>> | 86% | 26,701 psi | 42% | 1991 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 45,092 psi | 71% | 2142 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,914 psi | 63% | 2087 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,273 psi | 56% | 2073 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,984 psi | 57% | 2077 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,051 psi | 46% | 1962 fps | 97% |
| Vihtavuori N160 | <<locked>> | 90% | 35,650 psi | 57% | 2129 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 40,857 psi | 65% | 2165 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 80% | 34,606 psi | 55% | 2070 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 34,664 psi | 55% | 2133 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 32,372 psi | 51% | 2152 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 29,791 psi | 47% | 1982 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 39,784 psi | 63% | 2201 fps | 99.6% |
| Winchester 760 | <<locked>> | 96% | 43,961 psi | 70% | 2306 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,448 psi | 58% | 2136 fps | 98% |
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 111 powders for .338-06 A-Square loaded with the .338 | 250gr | Alaska Bullet Works Kodiak PP SPBC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,539 fps; across all powders the maximum-charge window runs from 1,398 fps to 2,539 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 | Alaska Bullet Works Kodiak PP SPBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Norma 204 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.