Load Specifications
Load data in caliber .338-06 A-Square with .338 | 225gr | Hornady SST InterLock bullet and 91 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% | 53,708 psi | 85% | 2405 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 54,476 psi | 86% | 2484 fps | 98.6% |
| Accurate 2230 | <<locked>> | 84% | 55,274 psi | 88% | 2497 fps | 99% |
| Accurate 2460 | <<locked>> | 90% | 55,811 psi | 88% | 2470 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 56,985 psi | 90% | 2493 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 56,826 psi | 90% | 2520 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 52,794 psi | 84% | 2487 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 54,839 psi | 87% | 2362 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 55,288 psi | 88% | 2382 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 56,115 psi | 89% | 2523 fps | 99.4% |
| ADI AR 2207 | <<locked>> | 84% | 55,941 psi | 89% | 2375 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 53,447 psi | 85% | 2467 fps | 98.5% |
| ADI AR 2219 | <<locked>> | 86% | 54,520 psi | 86% | 2467 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 55,738 psi | 88% | 2487 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 94% | 54,433 psi | 86% | 2470 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 56,913 psi | 90% | 2579 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 55,477 psi | 88% | 2615 fps | 98.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 52,185 psi | 83% | 2487 fps | 99.5% |
| Alliant Reloder-10x | <<locked>> | 88% | 53,983 psi | 86% | 2415 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 56,695 psi | 90% | 2552 fps | 99.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,282 psi | 73% | 2480 fps | 98.5% |
| Alliant Reloder-7 | <<locked>> | 82% | 53,664 psi | 85% | 2356 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 57,029 psi | 90% | 2405 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 55,840 psi | 89% | 2536 fps | 98.6% |
| Bofors RP3ᴾ | <<locked>> | 100% | 51,982 psi | 82% | 2497 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 92% | 54,737 psi | 87% | 2431 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 53,998 psi | 86% | 2513 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 92% | 55,637 psi | 88% | 2592 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 90% | 56,652 psi | 90% | 2493 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 54,172 psi | 86% | 2477 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 54,259 psi | 86% | 2507 fps | 97.8% |
| Hodgdon H4198 | <<locked>> | 84% | 56,797 psi | 90% | 2402 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 56,565 psi | 90% | 2533 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 36,666 psi | 58% | 2247 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 54,621 psi | 87% | 2556 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,968 psi | 54% | 1447 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 54,636 psi | 87% | 2490 fps | 99.5% |
| IMR 3031 | <<locked>> | 96% | 54,969 psi | 87% | 2520 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 56,347 psi | 89% | 2497 fps | 99.1% |
| IMR 4198 | <<locked>> | 88% | 54,679 psi | 87% | 2379 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 54,563 psi | 86% | 2536 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 94% | 55,738 psi | 88% | 2487 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 84% | 55,869 psi | 89% | 2477 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 55,724 psi | 88% | 2477 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 54,375 psi | 86% | 2500 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 56,623 psi | 90% | 2457 fps | 99.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 55,332 psi | 88% | 2497 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 54,186 psi | 86% | 2392 fps | 100% |
| Norma 201 | <<locked>> | 96% | 54,679 psi | 87% | 2474 fps | 99.8% |
| Norma 202 | <<locked>> | 96% | 54,984 psi | 87% | 2484 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 55,651 psi | 88% | 2539 fps | 99.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 56,304 psi | 89% | 2566 fps | 99.3% |
| Ramshot TAC | <<locked>> | 94% | 56,579 psi | 90% | 2500 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 94% | 55,071 psi | 87% | 2516 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 90% | 53,896 psi | 85% | 2448 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,360 psi | 54% | 1486 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 55,564 psi | 88% | 2477 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 55,158 psi | 87% | 2487 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 56,304 psi | 89% | 2608 fps | 99.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2543 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 55,985 psi | 89% | 2464 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 54,940 psi | 87% | 2467 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 48,269 psi | 77% | 2438 fps | 99% |
| Shooters World AR Plus | <<locked>> | 84% | 55,869 psi | 89% | 2477 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 54,375 psi | 86% | 2500 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 55,332 psi | 88% | 2497 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 55,970 psi | 89% | 2451 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 55,825 psi | 88% | 2146 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 54,984 psi | 87% | 2480 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 50,459 psi | 80% | 2493 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,027 psi | 87% | 2431 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 54,041 psi | 86% | 2470 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 54,215 psi | 86% | 2493 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 54,273 psi | 86% | 2392 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 53,011 psi | 84% | 2382 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 57,043 psi | 90% | 2523 fps | 99.9% |
| Somchem S335 | <<locked>> | 96% | 56,028 psi | 89% | 2428 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 53,476 psi | 85% | 2470 fps | 99% |
| Somchem S355ᴾ | <<locked>> | 100% | 49,545 psi | 79% | 2444 fps | 99% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,418 psi | 56% | 2283 fps | 97.1% |
| Vihtavuori N120 | <<locked>> | 84% | 55,840 psi | 89% | 2329 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 54,259 psi | 86% | 2369 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 57,029 psi | 90% | 2418 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 56,724 psi | 90% | 2480 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 55,259 psi | 88% | 2461 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 47,630 psi | 75% | 2385 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 94% | 56,463 psi | 89% | 2490 fps | 99.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 57,029 psi | 90% | 2503 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 43,613 psi | 69% | 2329 fps | 97.8% |
| Winchester 748 | <<locked>> | 94% | 54,926 psi | 87% | 2530 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 53,737 psi | 85% | 2503 fps | 99.4% |
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% | 37,188 psi | 59% | 2169 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 47,979 psi | 76% | 2388 fps | 97.6% |
| Accurate 2230 | <<locked>> | 80% | 48,022 psi | 76% | 2395 fps | 98% |
| Accurate 2460 | <<locked>> | 80% | 40,059 psi | 63% | 2247 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 29,631 psi | 47% | 2083 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 35,491 psi | 56% | 2201 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 28,065 psi | 44% | 2060 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 80% | 45,861 psi | 73% | 2244 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,238 psi | 73% | 2260 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 36,361 psi | 58% | 2205 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 49,588 psi | 79% | 2303 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 37,202 psi | 59% | 2205 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 44,657 psi | 71% | 2336 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,100 psi | 57% | 2178 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 80% | 34,243 psi | 54% | 2185 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,307 psi | 65% | 2343 fps | 97.8% |
| Alliant Power Pro 2000-MR | 47.4 gr | 88% | 39,813 psi | 63% | 2352 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 31,531 psi | 50% | 2133 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,409 psi | 67% | 2257 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 36,521 psi | 58% | 2231 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 92% | 35,607 psi | 56% | 2277 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,473 psi | 80% | 2316 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,164 psi | 70% | 2241 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 40,059 psi | 63% | 2293 fps | 95.4% |
| Bofors RP3 | <<locked>> | 86% | 32,808 psi | 52% | 2175 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,392 psi | 61% | 2182 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,576 psi | 53% | 2182 fps | 96.9% |
| Hodgdon CFE223 | 44.1 gr | 80% | 37,057 psi | 59% | 2287 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 40,799 psi | 65% | 2274 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 41,234 psi | 65% | 2290 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 41,872 psi | 66% | 2320 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 50,444 psi | 80% | 2323 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 34,345 psi | 54% | 2172 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 34,679 psi | 55% | 2205 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 32,460 psi | 51% | 2175 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,193 psi | 40% | 1289 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,083 psi | 52% | 2129 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 32,808 psi | 52% | 2178 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 36,651 psi | 58% | 2188 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 43,424 psi | 69% | 2231 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 35,056 psi | 56% | 2215 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 36,100 psi | 57% | 2178 fps | 96.9% |
| Lovex D073.4 | <<locked>> | 80% | 48,863 psi | 77% | 2388 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 39,740 psi | 63% | 2247 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 31,908 psi | 51% | 2142 fps | 97.5% |
| Lovex S060 | <<locked>> | 80% | 35,389 psi | 56% | 2119 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 30,066 psi | 48% | 2067 fps | 95% |
| Norma 200 | <<locked>> | 80% | 47,819 psi | 76% | 2313 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,504 psi | 53% | 2126 fps | 96.2% |
| Norma 202 | <<locked>> | 80% | 33,286 psi | 53% | 2142 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 35,839 psi | 57% | 2221 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 88% | 37,884 psi | 60% | 2277 fps | 95.7% |
| Ramshot TAC | <<locked>> | 88% | 46,543 psi | 74% | 2356 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 36,999 psi | 59% | 2231 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,131 psi | 62% | 2218 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,411 psi | 40% | 1325 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,553 psi | 64% | 2257 fps | 99.1% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 51,851 psi | 82% | 2444 fps | 95.6% |
| ReloadSwiss RS 52 | 44.9 gr | 86% | 37,652 psi | 60% | 2310 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 29,617 psi | 47% | 2139 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 36,956 psi | 59% | 2175 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 31,821 psi | 50% | 2083 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 32,735 psi | 52% | 2169 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 48,863 psi | 77% | 2388 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,908 psi | 51% | 2142 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 30,066 psi | 48% | 2067 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,743 psi | 68% | 2267 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,256 psi | 80% | 2087 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 44,991 psi | 71% | 2343 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 36,840 psi | 58% | 2260 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,076 psi | 68% | 2270 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 44,222 psi | 70% | 2329 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 34,737 psi | 55% | 2175 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,375 psi | 56% | 2106 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,761 psi | 46% | 1991 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 38,130 psi | 60% | 2241 fps | 97.8% |
| Somchem S335 | <<locked>> | 80% | 34,708 psi | 55% | 2113 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 35,607 psi | 56% | 2185 fps | 95.1% |
| Somchem S355 | <<locked>> | 88% | 34,055 psi | 54% | 2178 fps | 95.5% |
| Somchem S365 | <<locked>> | 96% | 31,401 psi | 50% | 2192 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 49,574 psi | 79% | 2257 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,219 psi | 64% | 2182 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,346 psi | 56% | 2113 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 30,385 psi | 48% | 2087 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 31,386 psi | 50% | 2087 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 86% | 30,443 psi | 48% | 2083 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 35,752 psi | 57% | 2169 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 80% | 30,081 psi | 48% | 2073 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,071 psi | 57% | 2195 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 34,505 psi | 55% | 2205 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 33,765 psi | 54% | 2175 fps | 95.4% |
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 91 powders for .338-06 A-Square loaded with the .338 | 225gr | Hornady SST InterLock. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,615 fps; across all powders the maximum-charge window runs from 1,447 fps to 2,615 fps. Accurate 2495 gives the best case fill at 100 %, and 91 of the 91 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 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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 | 225gr | Hornady SST 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.