Load Specifications
Load data in caliber .338-06 A-Square with .338 | 225gr | Hornady GMX bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Winchester 748.
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 1680 | <<locked>> | 82% | 54,317 psi | 86% | 2329 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 56,695 psi | 90% | 2428 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 54,839 psi | 87% | 2470 fps | 98.4% |
| Accurate 2230 | <<locked>> | 86% | 55,680 psi | 88% | 2487 fps | 98.8% |
| Accurate 2460 | <<locked>> | 92% | 55,390 psi | 88% | 2454 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 51,924 psi | 82% | 2431 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 56,739 psi | 90% | 2507 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 48,153 psi | 76% | 2418 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 55,361 psi | 88% | 2352 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 55,854 psi | 89% | 2372 fps | 100% |
| ADI AR 2206H | <<locked>> | 98% | 55,811 psi | 88% | 2503 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 86% | 56,246 psi | 89% | 2369 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 50,343 psi | 80% | 2408 fps | 97.8% |
| ADI AR 2219 | <<locked>> | 88% | 54,926 psi | 87% | 2461 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 55,782 psi | 88% | 2474 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 96% | 53,882 psi | 85% | 2454 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 56,826 psi | 90% | 2562 fps | 99.6% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 55,883 psi | 89% | 2598 fps | 98.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 48,443 psi | 77% | 2425 fps | 98.9% |
| Alliant Reloder-10x | <<locked>> | 90% | 53,954 psi | 86% | 2402 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 52,924 psi | 84% | 2487 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,076 psi | 68% | 2408 fps | 97.4% |
| Alliant Reloder-7 | <<locked>> | 84% | 53,940 psi | 85% | 2346 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 53,969 psi | 86% | 2356 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 55,579 psi | 88% | 2516 fps | 98.3% |
| Bofors RP3ᴾ | <<locked>> | 100% | 47,979 psi | 76% | 2431 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 94% | 55,085 psi | 87% | 2421 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 96% | 53,650 psi | 85% | 2497 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 94% | 55,840 psi | 89% | 2579 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 92% | 56,797 psi | 90% | 2480 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 54,027 psi | 86% | 2461 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 50,589 psi | 80% | 2441 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 84% | 54,012 psi | 86% | 2352 fps | 100% |
| Hodgdon H4895 | <<locked>> | 98% | 56,188 psi | 89% | 2513 fps | 99.5% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 54,534 psi | 86% | 2539 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,431 psi | 53% | 1427 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 54,824 psi | 87% | 2477 fps | 99.3% |
| IMR 3031 | <<locked>> | 98% | 54,563 psi | 86% | 2503 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 53,011 psi | 84% | 2438 fps | 98.4% |
| IMR 4198 | <<locked>> | 90% | 54,897 psi | 87% | 2369 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 54,143 psi | 86% | 2516 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 96% | 55,782 psi | 88% | 2474 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 86% | 56,130 psi | 89% | 2467 fps | 100% |
| Lovex D073.5 | <<locked>> | 92% | 55,796 psi | 88% | 2464 fps | 100% |
| Lovex D073.6 | <<locked>> | 98% | 54,143 psi | 86% | 2487 fps | 100% |
| Lovex S053 | <<locked>> | 82% | 56,014 psi | 89% | 2277 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 56,884 psi | 90% | 2444 fps | 99.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 51,750 psi | 82% | 2438 fps | 99.5% |
| Norma 200 | <<locked>> | 86% | 53,737 psi | 85% | 2379 fps | 100% |
| Norma 201 | <<locked>> | 98% | 54,360 psi | 86% | 2457 fps | 99.7% |
| Norma 202 | <<locked>> | 98% | 54,810 psi | 87% | 2470 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 51,909 psi | 82% | 2477 fps | 98.8% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 52,649 psi | 83% | 2500 fps | 98.6% |
| Ramshot TAC | <<locked>> | 96% | 56,724 psi | 90% | 2484 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 96% | 54,940 psi | 87% | 2500 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 92% | 54,012 psi | 86% | 2431 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,736 psi | 53% | 1463 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 55,840 psi | 89% | 2464 fps | 100% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 56,072 psi | 89% | 2589 fps | 98.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 46,151 psi | 73% | 2474 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 96% | 55,143 psi | 87% | 2444 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 54,694 psi | 87% | 2451 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 44,643 psi | 71% | 2372 fps | 98.2% |
| Shooters World AR Plus | <<locked>> | 86% | 56,130 psi | 89% | 2467 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 54,143 psi | 86% | 2487 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 51,750 psi | 82% | 2438 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 56,463 psi | 89% | 2441 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 56,144 psi | 89% | 2139 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 55,114 psi | 87% | 2467 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 47,239 psi | 75% | 2431 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 55,230 psi | 88% | 2418 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 53,853 psi | 85% | 2454 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 54,418 psi | 86% | 2480 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 54,143 psi | 86% | 2375 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 49,995 psi | 79% | 2333 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 53,287 psi | 84% | 2464 fps | 99.7% |
| Somchem S335 | <<locked>> | 98% | 55,956 psi | 89% | 2415 fps | 100% |
| Somchem S341 | <<locked>> | 98% | 57,087 psi | 90% | 2500 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 45,788 psi | 73% | 2375 fps | 98.2% |
| Vihtavuori N120 | <<locked>> | 86% | 56,159 psi | 89% | 2323 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 54,186 psi | 86% | 2359 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 57,000 psi | 90% | 2402 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,040 psi | 84% | 2431 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 55,274 psi | 88% | 2448 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 44,382 psi | 70% | 2326 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 96% | 56,623 psi | 90% | 2474 fps | 99.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 53,432 psi | 85% | 2448 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 40,886 psi | 65% | 2267 fps | 96.7% |
| Winchester 748 | <<locked>> | 96% | 54,592 psi | 87% | 2510 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 98% | 53,650 psi | 85% | 2487 fps | 99.3% |
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 1680 | <<locked>> | 80% | 50,908 psi | 81% | 2290 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,345 psi | 54% | 2113 fps | 99.9% |
| Accurate 2200 | <<locked>> | 80% | 45,107 psi | 71% | 2329 fps | 96.7% |
| Accurate 2230 | <<locked>> | 80% | 44,759 psi | 71% | 2333 fps | 97% |
| Accurate 2460 | <<locked>> | 80% | 36,825 psi | 58% | 2185 fps | 98.8% |
| Accurate 2495 | <<locked>> | 80% | 26,484 psi | 42% | 2014 fps | 98.9% |
| Accurate 2520 | <<locked>> | 80% | 32,401 psi | 51% | 2136 fps | 97.5% |
| Accurate 4064 | <<locked>> | 80% | 25,164 psi | 40% | 1991 fps | 96% |
| Accurate LT-30 | <<locked>> | 80% | 43,468 psi | 69% | 2198 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 43,888 psi | 70% | 2208 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 35,839 psi | 57% | 2185 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 46,818 psi | 74% | 2257 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 39,334 psi | 62% | 2234 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 41,843 psi | 66% | 2280 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,576 psi | 53% | 2116 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 80% | 31,575 psi | 50% | 2129 fps | 100% |
| Alliant Power Pro 1200-R | 38.8 gr | 80% | 38,247 psi | 61% | 2277 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 42,467 psi | 67% | 2385 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 32,996 psi | 52% | 2159 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,523 psi | 63% | 2205 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 38,290 psi | 61% | 2257 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 37,608 psi | 60% | 2303 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,630 psi | 75% | 2270 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 41,930 psi | 66% | 2195 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 42,757 psi | 68% | 2329 fps | 95.8% |
| Bofors RP3 | <<locked>> | 88% | 31,792 psi | 50% | 2149 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,911 psi | 57% | 2123 fps | 97.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 30,821 psi | 49% | 2116 fps | 95.6% |
| Hodgdon CFE223 | 44.4 gr | 84% | 39,494 psi | 63% | 2323 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 38,261 psi | 61% | 2221 fps | 99.7% |
| Hodgdon H335 | <<locked>> | 80% | 38,609 psi | 61% | 2234 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 96% | 44,150 psi | 70% | 2346 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 47,979 psi | 76% | 2274 fps | 100% |
| Hodgdon H4895 | <<locked>> | 82% | 33,895 psi | 54% | 2156 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 34,432 psi | 55% | 2208 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,816 psi | 39% | 1273 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 35,085 psi | 56% | 2162 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 30,226 psi | 48% | 2116 fps | 99% |
| IMR 4064 | <<locked>> | 90% | 38,827 psi | 62% | 2218 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 41,017 psi | 65% | 2185 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 36,854 psi | 58% | 2241 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 33,576 psi | 53% | 2116 fps | 95.8% |
| Lovex D073.4 | <<locked>> | 80% | 45,397 psi | 72% | 2326 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 36,593 psi | 58% | 2185 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 29,066 psi | 46% | 2073 fps | 96.3% |
| Lovex S053 | <<locked>> | 80% | 52,779 psi | 84% | 2241 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 37,333 psi | 59% | 2146 fps | 95.5% |
| Lovex S062 | <<locked>> | 84% | 31,227 psi | 49% | 2087 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 44,570 psi | 71% | 2260 fps | 100% |
| Norma 201 | <<locked>> | 80% | 30,908 psi | 49% | 2064 fps | 95% |
| Norma 202 | <<locked>> | 80% | 30,777 psi | 49% | 2083 fps | 97.6% |
| Norma 203B | <<locked>> | 88% | 35,302 psi | 56% | 2205 fps | 95% |
| Ramshot Big Game | <<locked>> | 90% | 37,666 psi | 60% | 2257 fps | 95.3% |
| Ramshot TAC | <<locked>> | 90% | 46,673 psi | 74% | 2343 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 84% | 36,753 psi | 58% | 2215 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 36,535 psi | 58% | 2156 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,714 psi | 39% | 1302 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,913 psi | 60% | 2201 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 39,943 psi | 63% | 2343 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 31,183 psi | 49% | 2169 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 34,200 psi | 54% | 2116 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 82% | 31,111 psi | 49% | 2064 fps | 95% |
| Rottweil R 903 | <<locked>> | 92% | 34,026 psi | 54% | 2188 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 80% | 45,397 psi | 72% | 2326 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,066 psi | 46% | 2073 fps | 96.3% |
| Shooters World Precision | <<locked>> | 84% | 31,227 psi | 49% | 2087 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,929 psi | 63% | 2205 fps | 97.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,950 psi | 76% | 2051 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,250 psi | 67% | 2287 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 36,521 psi | 58% | 2244 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,306 psi | 64% | 2218 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 43,743 psi | 69% | 2310 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 36,912 psi | 59% | 2208 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,924 psi | 52% | 2051 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,600 psi | 42% | 1932 fps | 97.1% |
| Somchem S321 | <<locked>> | 80% | 35,520 psi | 56% | 2182 fps | 96.8% |
| Somchem S335 | <<locked>> | 80% | 32,271 psi | 51% | 2057 fps | 98.6% |
| Somchem S341 | <<locked>> | 86% | 37,942 psi | 60% | 2218 fps | 95.6% |
| Somchem S355 | <<locked>> | 92% | 35,520 psi | 56% | 2198 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 46,920 psi | 74% | 2218 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,579 psi | 60% | 2129 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 32,866 psi | 52% | 2060 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 27,746 psi | 44% | 2024 fps | 99.1% |
| Vihtavuori N140 | <<locked>> | 80% | 29,037 psi | 46% | 2028 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 88% | 29,878 psi | 47% | 2064 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 33,170 psi | 53% | 2110 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 27,659 psi | 44% | 2011 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,130 psi | 60% | 2218 fps | 95.8% |
| Winchester 748 | 40.6 gr | 80% | 31,865 psi | 51% | 2136 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 33,591 psi | 53% | 2162 fps | 95% |
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 90 powders for .338-06 A-Square loaded with the .338 | 225gr | Hornady GMX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,598 fps; across all powders the maximum-charge window runs from 1,427 fps to 2,598 fps. Accurate 2495 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:12.0 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. Hodgdon CFE223, Alliant Power Pro 1200-R, Winchester 748 rank at the top here: for .338-06 A-Square with the .338 | 225gr | Hornady GMX 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.