Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:230 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:1:14.5
Load data in caliber .338-06 A-Square with .338 | 230gr | Nosler CT FailSafe 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>> | 92% | 55,637 psi | 88% | 2405 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 56,333 psi | 89% | 2490 fps | 99.1% |
| Accurate 2230 | <<locked>> | 82% | 53,403 psi | 85% | 2454 fps | 99% |
| Accurate 2460 | <<locked>> | 88% | 54,273 psi | 86% | 2431 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 55,753 psi | 88% | 2457 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,579 psi | 88% | 2484 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 55,129 psi | 87% | 2490 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 40,596 psi | 64% | 2349 fps | 96% |
| Accurate LT-30 | <<locked>> | 86% | 56,492 psi | 90% | 2362 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 56,927 psi | 90% | 2382 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 54,520 psi | 86% | 2484 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 82% | 54,505 psi | 86% | 2339 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,419 psi | 88% | 2477 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 86% | 56,739 psi | 90% | 2474 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,114 psi | 86% | 2448 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 94% | 56,608 psi | 90% | 2467 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,434 psi | 88% | 2539 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,998 psi | 86% | 2575 fps | 98.9% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,244 psi | 86% | 2497 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,956 psi | 89% | 2415 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,317 psi | 88% | 2513 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 42,061 psi | 67% | 2359 fps | 96.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,906 psi | 76% | 2493 fps | 99.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,550 psi | 88% | 2356 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,303 psi | 88% | 2365 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 54,099 psi | 86% | 2497 fps | 98.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,505 psi | 86% | 2510 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 56,695 psi | 90% | 2438 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 94% | 56,072 psi | 89% | 2520 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 90% | 54,360 psi | 86% | 2556 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 88% | 55,013 psi | 87% | 2451 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,927 psi | 89% | 2477 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 56,289 psi | 89% | 2516 fps | 98.4% |
| Hodgdon H4198 | <<locked>> | 82% | 55,114 psi | 87% | 2362 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,926 psi | 87% | 2493 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,116 psi | 60% | 2260 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 56,637 psi | 90% | 2562 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,403 psi | 55% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 56,637 psi | 90% | 2497 fps | 99.8% |
| IMR 3031 | <<locked>> | 94% | 53,853 psi | 85% | 2484 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 54,897 psi | 87% | 2461 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 96% | 56,144 psi | 89% | 2444 fps | 96.1% |
| IMR 4198 | <<locked>> | 88% | 56,637 psi | 90% | 2379 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 56,666 psi | 90% | 2543 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 92% | 54,114 psi | 86% | 2448 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 82% | 54,360 psi | 86% | 2438 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,070 psi | 86% | 2438 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 57,000 psi | 90% | 2510 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 55,230 psi | 88% | 2425 fps | 99.4% |
| Lovex S062 | <<locked>> | 98% | 54,056 psi | 86% | 2461 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 46,891 psi | 74% | 2359 fps | 95.8% |
| Norma 200 | <<locked>> | 84% | 55,796 psi | 88% | 2388 fps | 100% |
| Norma 201 | <<locked>> | 96% | 56,768 psi | 90% | 2480 fps | 100% |
| Norma 202 | <<locked>> | 94% | 53,447 psi | 85% | 2444 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,346 psi | 86% | 2503 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 41,684 psi | 66% | 2352 fps | 96% |
| Ramshot Big Game | <<locked>> | 98% | 54,766 psi | 87% | 2526 fps | 99.3% |
| Ramshot TAC | <<locked>> | 92% | 54,781 psi | 87% | 2461 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 94% | 57,000 psi | 90% | 2523 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,753 psi | 88% | 2454 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,563 psi | 55% | 1476 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,983 psi | 86% | 2438 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,679 psi | 85% | 2454 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 55,013 psi | 87% | 2572 fps | 99.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,184 psi | 81% | 2552 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,491 psi | 86% | 2425 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 57,043 psi | 90% | 2474 fps | 100% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,691 psi | 80% | 2454 fps | 99.4% |
| Shooters World AR Plus | <<locked>> | 82% | 54,360 psi | 86% | 2438 fps | 100% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 46,891 psi | 74% | 2359 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 96% | 57,000 psi | 90% | 2510 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 54,056 psi | 86% | 2461 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,244 psi | 86% | 2411 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 57,000 psi | 90% | 2139 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 56,782 psi | 90% | 2477 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,591 psi | 83% | 2507 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 57,000 psi | 90% | 2431 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 56,376 psi | 89% | 2484 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 56,478 psi | 90% | 2507 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 55,999 psi | 89% | 2392 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 54,955 psi | 87% | 2385 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,361 psi | 88% | 2484 fps | 100% |
| Somchem S335 | <<locked>> | 94% | 54,752 psi | 87% | 2392 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 55,419 psi | 88% | 2477 fps | 99.4% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,503 psi | 82% | 2451 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,869 psi | 58% | 2303 fps | 98% |
| Vihtavuori N120 | <<locked>> | 82% | 54,389 psi | 86% | 2293 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,680 psi | 88% | 2365 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,709 psi | 88% | 2382 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 55,506 psi | 88% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 53,940 psi | 85% | 2425 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,864 psi | 79% | 2398 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 43,918 psi | 70% | 2352 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 92% | 54,708 psi | 87% | 2448 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 98% | 55,564 psi | 88% | 2467 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 42,627 psi | 68% | 2356 fps | 96% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,208 psi | 72% | 2346 fps | 98.5% |
| Winchester 748 | <<locked>> | 94% | 57,087 psi | 90% | 2533 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 55,767 psi | 88% | 2510 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% | 38,537 psi | 61% | 2172 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,414 psi | 78% | 2395 fps | 98.2% |
| Accurate 2230 | <<locked>> | 80% | 49,821 psi | 79% | 2405 fps | 98.6% |
| Accurate 2460 | <<locked>> | 80% | 41,684 psi | 66% | 2257 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 30,980 psi | 49% | 2090 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 36,999 psi | 59% | 2211 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 29,327 psi | 46% | 2073 fps | 98.2% |
| Accurate 4350 | <<locked>> | 98% | 37,913 psi | 60% | 2303 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 47,108 psi | 75% | 2244 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,485 psi | 75% | 2260 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 35,317 psi | 56% | 2169 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 51,198 psi | 81% | 2300 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 36,303 psi | 58% | 2172 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 46,441 psi | 74% | 2339 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,275 psi | 59% | 2185 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 35,882 psi | 57% | 2195 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,772 psi | 68% | 2349 fps | 98.4% |
| Alliant Power Pro 2000-MR | 47.2 gr | 86% | 38,711 psi | 61% | 2316 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,908 psi | 49% | 2103 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,932 psi | 70% | 2257 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 35,708 psi | 57% | 2198 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,639 psi | 63% | 2313 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,650 psi | 55% | 2241 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,286 psi | 83% | 2316 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,818 psi | 73% | 2244 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 39,015 psi | 62% | 2260 fps | 95.6% |
| Bofors RP3 | <<locked>> | 82% | 30,008 psi | 48% | 2096 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,552 psi | 63% | 2185 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,998 psi | 55% | 2195 fps | 97.7% |
| Hodgdon CFE223 | 44.9 gr | 80% | 38,450 psi | 61% | 2300 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 80% | 42,511 psi | 67% | 2280 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 42,801 psi | 68% | 2297 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 40,756 psi | 65% | 2283 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 51,866 psi | 82% | 2323 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,549 psi | 56% | 2178 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 33,750 psi | 53% | 2172 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,792 psi | 50% | 2146 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,469 psi | 40% | 1286 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,389 psi | 55% | 2142 fps | 96% |
| IMR 3031 | <<locked>> | 80% | 34,156 psi | 54% | 2188 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 35,766 psi | 57% | 2156 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 94% | 52,866 psi | 84% | 2398 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 44,904 psi | 71% | 2231 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 34,127 psi | 54% | 2175 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 37,275 psi | 59% | 2185 fps | 97.6% |
| Lovex D073.4 | <<locked>> | 80% | 50,705 psi | 80% | 2392 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 41,307 psi | 65% | 2257 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 33,359 psi | 53% | 2152 fps | 98.3% |
| Lovex S060 | <<locked>> | 80% | 36,448 psi | 58% | 2126 fps | 96.1% |
| Lovex S062 | <<locked>> | 80% | 31,212 psi | 49% | 2077 fps | 95.9% |
| Lovex S065 | <<locked>> | 98% | 44,164 psi | 70% | 2316 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 49,385 psi | 78% | 2313 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,679 psi | 55% | 2133 fps | 97% |
| Norma 202 | <<locked>> | 80% | 34,476 psi | 55% | 2149 fps | 99% |
| Norma 203B | <<locked>> | 84% | 35,041 psi | 56% | 2188 fps | 95.7% |
| Norma URP | <<locked>> | 98% | 39,001 psi | 62% | 2303 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 34,592 psi | 55% | 2195 fps | 95.1% |
| Ramshot TAC | <<locked>> | 86% | 45,194 psi | 72% | 2320 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,940 psi | 57% | 2192 fps | 95.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,495 psi | 64% | 2224 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 41% | 1319 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,843 psi | 66% | 2260 fps | 99.4% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 47,340 psi | 75% | 2362 fps | 95% |
| ReloadSwiss RS 52 | 44.7 gr | 84% | 36,767 psi | 58% | 2277 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 28,703 psi | 45% | 2103 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 38,479 psi | 61% | 2185 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 32,982 psi | 52% | 2093 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 32,068 psi | 51% | 2136 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 50,705 psi | 80% | 2392 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 98% | 44,164 psi | 70% | 2316 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,359 psi | 53% | 2152 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 31,212 psi | 49% | 2077 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,266 psi | 70% | 2274 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,401 psi | 81% | 2080 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,630 psi | 74% | 2346 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 35,897 psi | 57% | 2228 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,570 psi | 71% | 2270 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 42,757 psi | 68% | 2290 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 33,982 psi | 54% | 2142 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,564 psi | 58% | 2113 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,805 psi | 47% | 1998 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 39,842 psi | 63% | 2254 fps | 98.5% |
| Somchem S335 | <<locked>> | 80% | 35,897 psi | 57% | 2116 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 34,751 psi | 55% | 2152 fps | 95.3% |
| Somchem S355 | <<locked>> | 86% | 33,344 psi | 53% | 2146 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 30,792 psi | 49% | 2165 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 80% | 51,155 psi | 81% | 2257 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,553 psi | 66% | 2182 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,564 psi | 58% | 2116 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,734 psi | 50% | 2096 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,750 psi | 52% | 2096 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 82% | 27,978 psi | 44% | 2008 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 98% | 41,263 psi | 65% | 2306 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 37,188 psi | 59% | 2182 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 80% | 31,314 psi | 50% | 2083 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 98% | 40,132 psi | 64% | 2310 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 34,998 psi | 55% | 2162 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 35,723 psi | 57% | 2211 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,025 psi | 52% | 2142 fps | 95.6% |
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 | 230gr | Nosler CT FailSafe. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,575 fps; across all powders the maximum-charge window runs from 1,444 fps to 2,575 fps. Accurate 4064 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 230.0 gr projectile in 0.338" calls for a 1:14.5 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 CFE223 rank at the top here: for .338-06 A-Square with the .338 | 230gr | Nosler CT FailSafe 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.