Load Specifications
Bullet Manufacturer:Hornady
Bullet Weight:225 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:1:16.5
Load data in caliber .338-06 A-Square with .338 | 225gr | Hornady InterLock bullet and 100 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, Hodgdon CFE223 and ReloadSwiss RS 52.
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% | 55,956 psi | 89% | 2464 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,490 psi | 85% | 2513 fps | 98.9% |
| Accurate 2230 | <<locked>> | 82% | 54,114 psi | 86% | 2523 fps | 99.2% |
| Accurate 2460 | <<locked>> | 88% | 54,549 psi | 86% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 55,927 psi | 89% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,985 psi | 89% | 2546 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 55,564 psi | 88% | 2552 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 41,249 psi | 65% | 2415 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 86% | 56,782 psi | 90% | 2421 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,983 psi | 86% | 2405 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 55,187 psi | 87% | 2549 fps | 99.5% |
| ADI AR 2207 | <<locked>> | 82% | 54,853 psi | 87% | 2398 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 56,217 psi | 89% | 2546 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 84% | 53,650 psi | 85% | 2490 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,650 psi | 87% | 2510 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 92% | 53,998 psi | 86% | 2493 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 56,014 psi | 89% | 2605 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 54,752 psi | 87% | 2648 fps | 99.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,984 psi | 87% | 2562 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 88% | 56,101 psi | 89% | 2470 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 56,072 psi | 89% | 2582 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,308 psi | 67% | 2421 fps | 96.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,617 psi | 77% | 2562 fps | 99.3% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,622 psi | 88% | 2411 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,782 psi | 88% | 2425 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 55,013 psi | 87% | 2566 fps | 98.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,940 psi | 87% | 2572 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,853 psi | 85% | 2457 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 94% | 56,710 psi | 90% | 2585 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 54,940 psi | 87% | 2621 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 88% | 55,622 psi | 88% | 2516 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 56,695 psi | 90% | 2543 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 57,058 psi | 90% | 2582 fps | 98.6% |
| Hodgdon H4198 | <<locked>> | 82% | 55,390 psi | 88% | 2421 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 55,622 psi | 88% | 2559 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,464 psi | 61% | 2323 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,012 psi | 86% | 2585 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,229 psi | 54% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,737 psi | 85% | 2516 fps | 99.6% |
| IMR 3031 | <<locked>> | 94% | 54,621 psi | 87% | 2546 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 55,579 psi | 88% | 2526 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 96% | 56,855 psi | 90% | 2513 fps | 96.5% |
| IMR 4198 | <<locked>> | 88% | 56,971 psi | 90% | 2438 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 39,755 psi | 63% | 2365 fps | 95.9% |
| IMR 4895 | <<locked>> | 96% | 53,911 psi | 85% | 2566 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 92% | 54,650 psi | 87% | 2510 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 54,723 psi | 87% | 2500 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,505 psi | 86% | 2500 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 53,954 psi | 86% | 2530 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 55,738 psi | 88% | 2487 fps | 99.6% |
| Lovex S062 | <<locked>> | 98% | 54,578 psi | 87% | 2523 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 47,311 psi | 75% | 2421 fps | 96.1% |
| Norma 200 | <<locked>> | 84% | 56,086 psi | 89% | 2448 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,737 psi | 85% | 2500 fps | 99.9% |
| Norma 202 | <<locked>> | 94% | 54,201 psi | 86% | 2510 fps | 100% |
| Norma 203B | <<locked>> | 98% | 55,114 psi | 87% | 2569 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 42,061 psi | 67% | 2415 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 98% | 55,506 psi | 88% | 2595 fps | 99.5% |
| Ramshot TAC | <<locked>> | 92% | 55,376 psi | 88% | 2526 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,143 psi | 86% | 2543 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 90% | 56,246 psi | 89% | 2516 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,301 psi | 54% | 1516 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 54,636 psi | 87% | 2503 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 54,360 psi | 86% | 2520 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 55,869 psi | 89% | 2641 fps | 99.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2621 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,549 psi | 86% | 2487 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,940 psi | 85% | 2493 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,227 psi | 81% | 2516 fps | 99.6% |
| Shooters World AR Plus | <<locked>> | 82% | 54,723 psi | 87% | 2500 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 47,311 psi | 75% | 2421 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 94% | 53,954 psi | 86% | 2530 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 54,578 psi | 87% | 2523 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,708 psi | 87% | 2477 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,346 psi | 86% | 2165 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,824 psi | 85% | 2500 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,316 psi | 85% | 2572 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,998 psi | 86% | 2451 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 56,826 psi | 90% | 2549 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,679 psi | 85% | 2526 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 56,347 psi | 89% | 2454 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 55,695 psi | 88% | 2448 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,796 psi | 88% | 2546 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 55,100 psi | 87% | 2454 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 56,333 psi | 89% | 2546 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,141 psi | 83% | 2516 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,304 psi | 59% | 2365 fps | 98.3% |
| Vihtavuori N120 | <<locked>> | 82% | 54,795 psi | 87% | 2352 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 56,362 psi | 89% | 2428 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 56,130 psi | 89% | 2441 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 56,347 psi | 89% | 2510 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 54,607 psi | 87% | 2487 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,459 psi | 80% | 2461 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,556 psi | 71% | 2418 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 92% | 55,448 psi | 88% | 2513 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 56,159 psi | 89% | 2530 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,134 psi | 68% | 2418 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,876 psi | 73% | 2411 fps | 98.8% |
| Winchester 748 | <<locked>> | 92% | 54,041 psi | 86% | 2552 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 56,695 psi | 90% | 2579 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% | 38,464 psi | 61% | 2221 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,082 psi | 79% | 2461 fps | 98.4% |
| Accurate 2230 | <<locked>> | 80% | 50,328 psi | 80% | 2470 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 41,698 psi | 66% | 2310 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 30,603 psi | 49% | 2133 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 37,014 psi | 59% | 2264 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 28,979 psi | 46% | 2116 fps | 98.2% |
| Accurate 4350 | <<locked>> | 98% | 38,334 psi | 61% | 2362 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 47,369 psi | 75% | 2303 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,776 psi | 76% | 2320 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 35,346 psi | 56% | 2221 fps | 95.9% |
| ADI AR 2207 | <<locked>> | 80% | 51,663 psi | 82% | 2359 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 36,477 psi | 58% | 2228 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 46,644 psi | 74% | 2398 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,405 psi | 59% | 2238 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 35,984 psi | 57% | 2244 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,091 psi | 68% | 2408 fps | 98.5% |
| Alliant Power Pro 2000-MR | 49.7 gr | 86% | 38,957 psi | 62% | 2379 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,864 psi | 49% | 2149 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,092 psi | 70% | 2316 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 35,795 psi | 57% | 2254 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,885 psi | 63% | 2375 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,838 psi | 55% | 2300 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,402 psi | 83% | 2375 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,064 psi | 73% | 2300 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 36,695 psi | 58% | 2267 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 29,892 psi | 47% | 2142 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,523 psi | 63% | 2238 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,041 psi | 56% | 2244 fps | 97.8% |
| Hodgdon CFE223 | 47.3 gr | 80% | 38,711 psi | 61% | 2359 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 80% | 42,815 psi | 68% | 2339 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,294 psi | 69% | 2359 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 40,944 psi | 65% | 2343 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 52,199 psi | 83% | 2382 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,563 psi | 56% | 2231 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,968 psi | 54% | 2231 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,618 psi | 50% | 2192 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,222 psi | 40% | 1319 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,505 psi | 55% | 2195 fps | 96.1% |
| IMR 3031 | <<locked>> | 80% | 34,171 psi | 54% | 2238 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 35,810 psi | 57% | 2208 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 50,154 psi | 79% | 2418 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 45,005 psi | 71% | 2287 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 37,246 psi | 59% | 2320 fps | 95.1% |
| IMR 4895 | <<locked>> | 82% | 34,272 psi | 54% | 2231 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 37,405 psi | 59% | 2238 fps | 97.8% |
| Lovex D073.4 | <<locked>> | 80% | 50,850 psi | 81% | 2451 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 41,452 psi | 66% | 2313 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 33,185 psi | 53% | 2201 fps | 98.3% |
| Lovex S060 | <<locked>> | 80% | 36,405 psi | 58% | 2178 fps | 96.2% |
| Lovex S062 | <<locked>> | 80% | 30,995 psi | 49% | 2123 fps | 95.9% |
| Lovex S065 | <<locked>> | 98% | 44,367 psi | 70% | 2372 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 49,559 psi | 79% | 2369 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,635 psi | 55% | 2185 fps | 97.2% |
| Norma 202 | <<locked>> | 80% | 34,592 psi | 55% | 2201 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 32,851 psi | 52% | 2192 fps | 95.1% |
| Norma URP | <<locked>> | 98% | 39,392 psi | 62% | 2365 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 84% | 34,606 psi | 55% | 2247 fps | 95.3% |
| Ramshot TAC | <<locked>> | 84% | 42,453 psi | 67% | 2326 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,230 psi | 57% | 2251 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,524 psi | 64% | 2280 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,382 psi | 40% | 1352 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,221 psi | 67% | 2323 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 47,834 psi | 76% | 2428 fps | 95.4% |
| ReloadSwiss RS 52 | 47.1 gr | 84% | 37,014 psi | 59% | 2336 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 28,718 psi | 46% | 2156 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 37,956 psi | 60% | 2231 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 32,721 psi | 52% | 2139 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 86% | 32,155 psi | 51% | 2188 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 50,850 psi | 81% | 2451 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 44,367 psi | 70% | 2372 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,185 psi | 53% | 2201 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 30,995 psi | 49% | 2123 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,425 psi | 70% | 2329 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,576 psi | 82% | 2133 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,123 psi | 75% | 2408 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 33,881 psi | 54% | 2238 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,672 psi | 71% | 2326 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,205 psi | 64% | 2300 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 33,924 psi | 54% | 2192 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,390 psi | 58% | 2162 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,588 psi | 47% | 2041 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 39,798 psi | 63% | 2306 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 35,911 psi | 57% | 2169 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 34,751 psi | 55% | 2205 fps | 95.5% |
| Somchem S355 | <<locked>> | 84% | 31,328 psi | 50% | 2152 fps | 95% |
| Somchem S365 | <<locked>> | 92% | 28,805 psi | 46% | 2165 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 51,590 psi | 82% | 2313 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,437 psi | 66% | 2231 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,477 psi | 58% | 2165 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,488 psi | 50% | 2139 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,590 psi | 52% | 2146 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 27,818 psi | 44% | 2054 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 96% | 39,059 psi | 62% | 2323 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 37,231 psi | 59% | 2234 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 80% | 31,198 psi | 49% | 2129 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 98% | 40,422 psi | 64% | 2369 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 32,822 psi | 52% | 2165 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 35,868 psi | 57% | 2267 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,025 psi | 52% | 2195 fps | 95.8% |
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 100 powders for .338-06 A-Square loaded with the .338 | 225gr | Hornady InterLock. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,648 fps; across all powders the maximum-charge window runs from 1,483 fps to 2,648 fps. Accurate 4064 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:16.5 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, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for .338-06 A-Square with the .338 | 225gr | Hornady InterLock 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.