Load Specifications
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:1:6.0
Load data in caliber .338-06 A-Square with .338 | 225gr | Woodleigh PP SN bullet and 99 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 CFE223.
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>> | 90% | 55,201 psi | 87% | 2457 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 55,390 psi | 88% | 2543 fps | 99.2% |
| Accurate 2230 | <<locked>> | 82% | 56,521 psi | 90% | 2556 fps | 99.5% |
| Accurate 2460 | <<locked>> | 86% | 53,563 psi | 85% | 2480 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 55,550 psi | 88% | 2513 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,114 psi | 87% | 2536 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 55,129 psi | 87% | 2549 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,845 psi | 69% | 2457 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 84% | 55,245 psi | 88% | 2408 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,709 psi | 88% | 2431 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 54,172 psi | 86% | 2539 fps | 99.5% |
| ADI AR 2207 | <<locked>> | 82% | 57,043 psi | 90% | 2425 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 54,940 psi | 87% | 2533 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 84% | 55,898 psi | 89% | 2523 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 57,014 psi | 90% | 2546 fps | 100% |
| Alliant AR-Comp | <<locked>> | 92% | 56,550 psi | 90% | 2523 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 54,882 psi | 87% | 2592 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,388 psi | 85% | 2635 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 53,954 psi | 86% | 2552 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 86% | 55,332 psi | 88% | 2464 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 55,027 psi | 87% | 2572 fps | 99.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,469 psi | 70% | 2467 fps | 97.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,894 psi | 81% | 2605 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 54,273 psi | 86% | 2411 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 53,519 psi | 85% | 2549 fps | 98.8% |
| Bofors RP3 | <<locked>> | 98% | 54,317 psi | 86% | 2566 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 55,825 psi | 88% | 2487 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 92% | 55,622 psi | 88% | 2572 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 88% | 53,838 psi | 85% | 2612 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 86% | 54,259 psi | 86% | 2500 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 55,288 psi | 88% | 2526 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 56,115 psi | 89% | 2575 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 92% | 54,607 psi | 87% | 2549 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,509 psi | 64% | 2362 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 56,681 psi | 90% | 2625 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,650 psi | 55% | 1493 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,985 psi | 89% | 2552 fps | 99.8% |
| IMR 3031 | <<locked>> | 94% | 57,072 psi | 90% | 2579 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 54,433 psi | 86% | 2516 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 55,492 psi | 88% | 2500 fps | 96.4% |
| IMR 4198 | <<locked>> | 86% | 55,622 psi | 88% | 2425 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 54,056 psi | 86% | 2510 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,989 psi | 67% | 2408 fps | 96.7% |
| IMR 4895 | <<locked>> | 96% | 56,362 psi | 89% | 2602 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 92% | 57,014 psi | 90% | 2546 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 53,476 psi | 85% | 2490 fps | 100% |
| Lovex D073.6 | <<locked>> | 94% | 56,666 psi | 90% | 2566 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 54,549 psi | 86% | 2477 fps | 99.5% |
| Lovex S062 | <<locked>> | 96% | 53,664 psi | 85% | 2516 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 49,588 psi | 79% | 2457 fps | 96.8% |
| Norma 200 | <<locked>> | 82% | 55,056 psi | 87% | 2438 fps | 100% |
| Norma 201 | <<locked>> | 94% | 56,057 psi | 89% | 2533 fps | 100% |
| Norma 202 | <<locked>> | 94% | 56,463 psi | 89% | 2539 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,085 psi | 86% | 2562 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 44,237 psi | 70% | 2454 fps | 97% |
| Ramshot Big Game | <<locked>> | 96% | 54,534 psi | 86% | 2585 fps | 99.5% |
| Ramshot TAC | <<locked>> | 90% | 54,157 psi | 86% | 2516 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 92% | 56,652 psi | 90% | 2579 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,781 psi | 87% | 2503 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,795 psi | 55% | 1526 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 56,811 psi | 90% | 2533 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 56,826 psi | 90% | 2559 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 54,810 psi | 87% | 2631 fps | 99.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 54,389 psi | 86% | 2661 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,888 psi | 70% | 2477 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,194 psi | 72% | 2490 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 90% | 54,143 psi | 86% | 2480 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 56,521 psi | 90% | 2530 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 53,838 psi | 85% | 2552 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 49,588 psi | 79% | 2457 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 94% | 56,666 psi | 90% | 2566 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 53,664 psi | 85% | 2516 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 53,301 psi | 84% | 2461 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,014 psi | 89% | 2185 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 56,014 psi | 89% | 2530 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 55,883 psi | 89% | 2612 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 56,391 psi | 89% | 2484 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 55,622 psi | 88% | 2539 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,912 psi | 89% | 2559 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 55,216 psi | 88% | 2444 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 54,375 psi | 86% | 2438 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 54,752 psi | 87% | 2536 fps | 100% |
| Somchem S335 | <<locked>> | 92% | 54,201 psi | 86% | 2444 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 54,752 psi | 87% | 2530 fps | 99.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 54,607 psi | 87% | 2552 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,320 psi | 62% | 2408 fps | 98.9% |
| Vihtavuori N120 | <<locked>> | 82% | 56,869 psi | 90% | 2375 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 55,100 psi | 87% | 2418 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 55,056 psi | 87% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 55,477 psi | 88% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 56,971 psi | 90% | 2520 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,823 psi | 84% | 2493 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,659 psi | 74% | 2457 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 90% | 54,056 psi | 86% | 2500 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 96% | 54,940 psi | 87% | 2516 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 45,571 psi | 72% | 2461 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,877 psi | 76% | 2448 fps | 99.2% |
| Winchester 748 | <<locked>> | 92% | 56,768 psi | 90% | 2589 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 55,448 psi | 88% | 2569 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% | 40,611 psi | 64% | 2257 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,953 psi | 82% | 2493 fps | 98.8% |
| Accurate 2230 | <<locked>> | 80% | 52,678 psi | 83% | 2507 fps | 99.1% |
| Accurate 2460 | <<locked>> | 80% | 43,874 psi | 70% | 2346 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 33,156 psi | 53% | 2178 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,131 psi | 62% | 2303 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 31,386 psi | 50% | 2162 fps | 98.9% |
| Accurate 4350 | <<locked>> | 96% | 38,145 psi | 60% | 2359 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 49,081 psi | 78% | 2329 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,472 psi | 78% | 2349 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 37,188 psi | 59% | 2260 fps | 96.6% |
| ADI AR 2207 | <<locked>> | 80% | 53,519 psi | 85% | 2382 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 36,027 psi | 57% | 2221 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 48,863 psi | 77% | 2431 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,175 psi | 62% | 2274 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 38,116 psi | 60% | 2280 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,223 psi | 72% | 2444 fps | 99% |
| Alliant Power Pro 2000-MR | 49.6 gr | 84% | 38,305 psi | 61% | 2365 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,647 psi | 49% | 2142 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,006 psi | 73% | 2343 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,346 psi | 56% | 2244 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,349 psi | 62% | 2369 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 34,389 psi | 55% | 2293 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,834 psi | 76% | 2326 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,537 psi | 61% | 2306 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 29,863 psi | 47% | 2139 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,263 psi | 65% | 2270 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,144 psi | 59% | 2287 fps | 98.4% |
| Hodgdon CFE223 | 48.3 gr | 80% | 40,741 psi | 65% | 2398 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 80% | 44,744 psi | 71% | 2372 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,368 psi | 72% | 2392 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 40,393 psi | 64% | 2333 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 37,463 psi | 59% | 2270 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,765 psi | 54% | 2228 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,446 psi | 53% | 2234 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,599 psi | 41% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,187 psi | 57% | 2231 fps | 96.8% |
| IMR 3031 | <<locked>> | 80% | 36,274 psi | 57% | 2277 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,418 psi | 56% | 2201 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 90% | 49,182 psi | 78% | 2408 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 46,673 psi | 74% | 2310 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 50,908 psi | 81% | 2464 fps | 95.4% |
| IMR 4831 | <<locked>> | 96% | 36,956 psi | 59% | 2313 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 33,924 psi | 54% | 2224 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 39,175 psi | 62% | 2274 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 80% | 43,845 psi | 69% | 2352 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 35,491 psi | 56% | 2244 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 38,087 psi | 60% | 2211 fps | 96.9% |
| Lovex S062 | <<locked>> | 80% | 32,909 psi | 52% | 2162 fps | 96.8% |
| Lovex S065 | <<locked>> | 96% | 43,830 psi | 69% | 2369 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 51,996 psi | 82% | 2402 fps | 100% |
| Norma 201 | <<locked>> | 80% | 36,666 psi | 58% | 2224 fps | 97.8% |
| Norma 202 | <<locked>> | 80% | 36,535 psi | 58% | 2238 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 32,576 psi | 52% | 2185 fps | 95.1% |
| Norma URP | <<locked>> | 96% | 38,986 psi | 62% | 2359 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 82% | 34,272 psi | 54% | 2241 fps | 95.3% |
| Ramshot TAC | <<locked>> | 82% | 41,713 psi | 66% | 2316 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,159 psi | 60% | 2290 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,438 psi | 67% | 2316 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,817 psi | 41% | 1362 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,048 psi | 70% | 2352 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 46,760 psi | 74% | 2411 fps | 95.3% |
| ReloadSwiss RS 52 | 46.9 gr | 82% | 36,419 psi | 58% | 2323 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,442 psi | 45% | 2149 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 38,290 psi | 61% | 2372 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 42,221 psi | 67% | 2434 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,277 psi | 64% | 2270 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 34,751 psi | 55% | 2178 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 84% | 32,010 psi | 51% | 2182 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 43,830 psi | 69% | 2369 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,491 psi | 56% | 2244 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 32,909 psi | 52% | 2162 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,470 psi | 74% | 2365 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,200 psi | 84% | 2152 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,255 psi | 78% | 2441 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 33,547 psi | 53% | 2231 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,688 psi | 74% | 2359 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 39,450 psi | 63% | 2287 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,839 psi | 57% | 2234 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,261 psi | 61% | 2195 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,328 psi | 50% | 2077 fps | 99.2% |
| Somchem S321 | <<locked>> | 80% | 41,901 psi | 66% | 2343 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 37,797 psi | 60% | 2201 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 36,666 psi | 58% | 2244 fps | 96.3% |
| Somchem S355 | <<locked>> | 82% | 31,198 psi | 49% | 2146 fps | 95.1% |
| Somchem S365 | <<locked>> | 90% | 28,863 psi | 46% | 2165 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 53,417 psi | 85% | 2336 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 43,410 psi | 69% | 2260 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,348 psi | 61% | 2198 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,547 psi | 53% | 2178 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,418 psi | 55% | 2178 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 27,702 psi | 44% | 2047 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 94% | 38,638 psi | 61% | 2316 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 39,073 psi | 62% | 2270 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 33,127 psi | 53% | 2169 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 96% | 39,972 psi | 63% | 2362 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 32,547 psi | 52% | 2162 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 37,898 psi | 60% | 2306 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,766 psi | 55% | 2231 fps | 96.5% |
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 99 powders for .338-06 A-Square loaded with the .338 | 225gr | Woodleigh PP SN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,661 fps; across all powders the maximum-charge window runs from 1,493 fps to 2,661 fps. Accurate 4350 gives the best case fill at 100 %, and 99 of the 99 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 225.0 gr projectile in 0.338" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 CFE223 rank at the top here: for .338-06 A-Square with the .338 | 225gr | Woodleigh PP SN 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.