Load Specifications
Bullet:.338 | 225gr | Woodleigh HS
Bullet Manufacturer:Woodleigh
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:1:15.5
Load data in caliber .338-06 A-Square with .338 | 225gr | Woodleigh HS bullet and 101 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>> | 92% | 56,782 psi | 90% | 2461 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,983 psi | 86% | 2507 fps | 98.9% |
| Accurate 2230 | <<locked>> | 82% | 54,549 psi | 86% | 2513 fps | 99.2% |
| Accurate 2460 | <<locked>> | 88% | 55,477 psi | 88% | 2490 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 56,985 psi | 90% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 56,652 psi | 90% | 2539 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 56,507 psi | 90% | 2552 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 41,713 psi | 66% | 2408 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 86% | 57,087 psi | 90% | 2415 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,302 psi | 86% | 2395 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 55,608 psi | 88% | 2543 fps | 99.5% |
| ADI AR 2207 | <<locked>> | 82% | 55,245 psi | 88% | 2388 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 56,594 psi | 90% | 2536 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 84% | 53,824 psi | 85% | 2480 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,984 psi | 87% | 2503 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 92% | 54,259 psi | 86% | 2487 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 56,652 psi | 90% | 2598 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 54,926 psi | 87% | 2638 fps | 99.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 55,506 psi | 88% | 2556 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 88% | 56,695 psi | 90% | 2467 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 56,637 psi | 90% | 2579 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,772 psi | 68% | 2418 fps | 96.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 48,950 psi | 78% | 2556 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 82% | 56,449 psi | 89% | 2411 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 56,028 psi | 89% | 2415 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 55,158 psi | 87% | 2556 fps | 98.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 55,651 psi | 88% | 2569 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,085 psi | 86% | 2451 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,751 psi | 85% | 2536 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 55,361 psi | 88% | 2615 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 88% | 56,144 psi | 89% | 2510 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 57,043 psi | 90% | 2533 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 53,983 psi | 86% | 2530 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 82% | 55,956 psi | 89% | 2418 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 56,072 psi | 89% | 2552 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,059 psi | 62% | 2320 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,476 psi | 86% | 2582 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,301 psi | 54% | 1473 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,070 psi | 86% | 2510 fps | 99.6% |
| IMR 3031 | <<locked>> | 94% | 54,969 psi | 87% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,014 psi | 89% | 2520 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,809 psi | 85% | 2457 fps | 95.7% |
| IMR 4198 | <<locked>> | 86% | 54,273 psi | 86% | 2395 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 40,451 psi | 64% | 2365 fps | 96% |
| IMR 4895 | <<locked>> | 96% | 54,375 psi | 86% | 2559 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 92% | 54,984 psi | 87% | 2503 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 55,172 psi | 87% | 2493 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 55,216 psi | 88% | 2497 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 54,230 psi | 86% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 56,086 psi | 89% | 2480 fps | 99.5% |
| Lovex S062 | <<locked>> | 98% | 55,100 psi | 87% | 2520 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 47,950 psi | 76% | 2418 fps | 96.1% |
| Norma 200 | <<locked>> | 84% | 56,927 psi | 90% | 2444 fps | 100% |
| Norma 201 | <<locked>> | 94% | 54,273 psi | 86% | 2493 fps | 99.9% |
| Norma 202 | <<locked>> | 94% | 54,650 psi | 87% | 2503 fps | 100% |
| Norma 203B | <<locked>> | 98% | 55,622 psi | 88% | 2566 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 42,453 psi | 67% | 2408 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 98% | 56,014 psi | 89% | 2589 fps | 99.5% |
| Ramshot TAC | <<locked>> | 92% | 55,869 psi | 89% | 2520 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,592 psi | 87% | 2536 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 90% | 56,666 psi | 90% | 2510 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,693 psi | 55% | 1512 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 54,969 psi | 87% | 2493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 54,955 psi | 87% | 2516 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 56,376 psi | 89% | 2638 fps | 99.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,301 psi | 83% | 2615 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 42,047 psi | 67% | 2428 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 92% | 55,608 psi | 88% | 2484 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 54,505 psi | 86% | 2487 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 51,590 psi | 82% | 2507 fps | 99.5% |
| Shooters World AR Plus | <<locked>> | 82% | 55,172 psi | 87% | 2493 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 47,950 psi | 76% | 2418 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 94% | 54,230 psi | 86% | 2523 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 55,100 psi | 87% | 2520 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,056 psi | 87% | 2467 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,737 psi | 87% | 2156 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,172 psi | 86% | 2490 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,882 psi | 85% | 2569 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,389 psi | 86% | 2444 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,490 psi | 85% | 2493 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,143 psi | 86% | 2520 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 57,000 psi | 90% | 2451 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 56,014 psi | 89% | 2441 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 56,318 psi | 89% | 2539 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 55,579 psi | 88% | 2448 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 56,536 psi | 90% | 2536 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,721 psi | 84% | 2513 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,739 psi | 60% | 2359 fps | 98.3% |
| Vihtavuori N120 | <<locked>> | 82% | 55,143 psi | 87% | 2343 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 56,927 psi | 90% | 2425 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 56,695 psi | 90% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 56,826 psi | 90% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 55,042 psi | 87% | 2480 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,705 psi | 80% | 2451 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,860 psi | 71% | 2411 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 92% | 55,840 psi | 89% | 2507 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 56,710 psi | 90% | 2523 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 43,801 psi | 69% | 2415 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,282 psi | 73% | 2405 fps | 98.7% |
| Winchester 748 | <<locked>> | 92% | 54,404 psi | 86% | 2546 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,359 psi | 85% | 2523 fps | 99.6% |
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% | 39,407 psi | 62% | 2224 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,473 psi | 80% | 2454 fps | 98.4% |
| Accurate 2230 | <<locked>> | 80% | 50,966 psi | 81% | 2464 fps | 98.7% |
| Accurate 2460 | <<locked>> | 80% | 42,554 psi | 67% | 2310 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 31,749 psi | 50% | 2142 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 37,594 psi | 60% | 2264 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 30,037 psi | 48% | 2123 fps | 98.4% |
| Accurate 4350 | <<locked>> | 98% | 39,088 psi | 62% | 2362 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 47,659 psi | 76% | 2293 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,037 psi | 76% | 2313 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 35,969 psi | 57% | 2221 fps | 96% |
| ADI AR 2207 | <<locked>> | 80% | 52,040 psi | 82% | 2352 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 37,057 psi | 59% | 2228 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 47,152 psi | 75% | 2392 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,942 psi | 60% | 2238 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 36,535 psi | 58% | 2244 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,613 psi | 69% | 2405 fps | 98.5% |
| Alliant Power Pro 2000-MR | 49 gr | 86% | 39,392 psi | 62% | 2372 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,517 psi | 50% | 2152 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,643 psi | 71% | 2310 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,492 psi | 58% | 2254 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 40,379 psi | 64% | 2372 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 35,389 psi | 56% | 2300 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,881 psi | 84% | 2369 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,572 psi | 74% | 2297 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 39,784 psi | 63% | 2313 fps | 95.8% |
| Bofors RP3 | <<locked>> | 82% | 30,748 psi | 49% | 2149 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,277 psi | 64% | 2238 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,752 psi | 57% | 2247 fps | 97.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,363 psi | 62% | 2356 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 80% | 43,294 psi | 69% | 2336 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 43,888 psi | 70% | 2356 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 41,481 psi | 66% | 2339 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 52,460 psi | 83% | 2372 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 36,216 psi | 57% | 2231 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 34,519 psi | 55% | 2228 fps | 95.7% |
| Hodgdon LEVERevolution | 44.7 gr | 80% | 32,256 psi | 51% | 2192 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,454 psi | 40% | 1316 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,027 psi | 56% | 2192 fps | 96.2% |
| IMR 3031 | <<locked>> | 80% | 34,998 psi | 55% | 2241 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 36,376 psi | 58% | 2208 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 50,546 psi | 80% | 2411 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 45,469 psi | 72% | 2280 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 37,869 psi | 60% | 2316 fps | 95.2% |
| IMR 4895 | <<locked>> | 82% | 34,940 psi | 55% | 2231 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 37,942 psi | 60% | 2238 fps | 97.8% |
| Lovex D073.4 | <<locked>> | 80% | 51,663 psi | 82% | 2448 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 42,090 psi | 67% | 2310 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 80% | 33,997 psi | 54% | 2205 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 37,130 psi | 59% | 2178 fps | 96.3% |
| Lovex S062 | <<locked>> | 80% | 31,908 psi | 51% | 2129 fps | 96.1% |
| Lovex S065 | <<locked>> | 98% | 45,020 psi | 71% | 2372 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 50,314 psi | 80% | 2365 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,389 psi | 56% | 2185 fps | 97.2% |
| Norma 202 | <<locked>> | 80% | 35,244 psi | 56% | 2201 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 33,547 psi | 53% | 2195 fps | 95.2% |
| Norma URP | <<locked>> | 98% | 40,016 psi | 63% | 2362 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 84% | 35,317 psi | 56% | 2247 fps | 95.4% |
| Ramshot TAC | <<locked>> | 84% | 43,163 psi | 68% | 2326 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,869 psi | 58% | 2251 fps | 96.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,162 psi | 65% | 2277 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 41% | 1348 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 42,757 psi | 68% | 2320 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 48,095 psi | 76% | 2418 fps | 95.3% |
| ReloadSwiss RS 52 | 46.4 gr | 84% | 37,478 psi | 59% | 2333 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 29,240 psi | 46% | 2156 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 39,407 psi | 62% | 2379 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 39,073 psi | 62% | 2234 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 33,721 psi | 53% | 2146 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 84% | 30,864 psi | 49% | 2142 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 51,663 psi | 82% | 2448 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,020 psi | 71% | 2372 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,997 psi | 54% | 2205 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 31,908 psi | 51% | 2129 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,020 psi | 71% | 2326 fps | 98.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,924 psi | 82% | 2126 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,718 psi | 76% | 2405 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,389 psi | 55% | 2234 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,339 psi | 72% | 2326 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,770 psi | 65% | 2297 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,534 psi | 55% | 2192 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,173 psi | 59% | 2162 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,327 psi | 48% | 2044 fps | 98.8% |
| Somchem S321 | <<locked>> | 80% | 40,509 psi | 64% | 2306 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 36,564 psi | 58% | 2165 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 35,418 psi | 56% | 2205 fps | 95.6% |
| Somchem S355 | <<locked>> | 84% | 32,111 psi | 51% | 2156 fps | 95.2% |
| Somchem S365 | <<locked>> | 92% | 29,588 psi | 47% | 2172 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 51,967 psi | 82% | 2306 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,177 psi | 67% | 2231 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,173 psi | 59% | 2165 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,343 psi | 51% | 2142 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 33,388 psi | 53% | 2149 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 28,500 psi | 45% | 2057 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 96% | 39,639 psi | 63% | 2320 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 37,811 psi | 60% | 2231 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 80% | 32,068 psi | 51% | 2136 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 98% | 41,031 psi | 65% | 2369 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,402 psi | 53% | 2165 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 36,477 psi | 58% | 2264 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,504 psi | 53% | 2192 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 101 powders for .338-06 A-Square loaded with the .338 | 225gr | Woodleigh HS. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,473 fps to 2,638 fps. Accurate 4064 gives the best case fill at 100 %, and 101 of the 101 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 1:15.5 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 | 225gr | Woodleigh HS 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.