Load Specifications
Load data in caliber .338-06 A-Square with .338 | 250gr | Lehigh Defense Match Solid bullet and 92 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 2000-MR and ReloadSwiss RS 52.
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% | 55,216 psi | 88% | 2182 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 54,273 psi | 86% | 2238 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 56,130 psi | 89% | 2326 fps | 99% |
| Accurate 2230 | <<locked>> | 86% | 56,666 psi | 90% | 2336 fps | 99.3% |
| Accurate 2460 | <<locked>> | 92% | 56,811 psi | 90% | 2306 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 53,156 psi | 84% | 2283 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 54,041 psi | 86% | 2313 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 49,327 psi | 78% | 2274 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 56,217 psi | 89% | 2201 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 56,652 psi | 90% | 2221 fps | 100% |
| ADI AR 2206H | <<locked>> | 98% | 56,927 psi | 90% | 2356 fps | 99.6% |
| ADI AR 2207 | <<locked>> | 86% | 57,000 psi | 90% | 2211 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 51,271 psi | 81% | 2267 fps | 98.5% |
| ADI AR 2219 | <<locked>> | 88% | 55,941 psi | 89% | 2306 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 56,652 psi | 90% | 2320 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 96% | 55,303 psi | 88% | 2300 fps | 100% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 56,623 psi | 90% | 2444 fps | 99.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 49,588 psi | 79% | 2280 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 90% | 54,911 psi | 87% | 2247 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 53,911 psi | 85% | 2339 fps | 99% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,830 psi | 69% | 2274 fps | 98.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 54,737 psi | 87% | 2195 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 54,868 psi | 87% | 2208 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 56,579 psi | 90% | 2369 fps | 98.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 49,124 psi | 78% | 2290 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 94% | 55,782 psi | 88% | 2270 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 96% | 54,650 psi | 87% | 2346 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 94% | 56,884 psi | 90% | 2425 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 90% | 53,969 psi | 86% | 2283 fps | 100% |
| Hodgdon H335 | <<locked>> | 90% | 55,376 psi | 88% | 2313 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 51,503 psi | 82% | 2300 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 84% | 55,100 psi | 87% | 2205 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 53,896 psi | 85% | 2323 fps | 99.6% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 55,448 psi | 88% | 2388 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,721 psi | 53% | 1325 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 55,550 psi | 88% | 2323 fps | 99.7% |
| IMR 3031 | <<locked>> | 98% | 55,796 psi | 88% | 2349 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,027 psi | 86% | 2293 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 98% | 55,535 psi | 88% | 2274 fps | 95.9% |
| IMR 4198 | <<locked>> | 90% | 56,028 psi | 89% | 2215 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 55,230 psi | 88% | 2365 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 96% | 56,652 psi | 90% | 2320 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 84% | 53,345 psi | 85% | 2274 fps | 100% |
| Lovex D073.5 | <<locked>> | 92% | 56,739 psi | 90% | 2313 fps | 100% |
| Lovex D073.6 | <<locked>> | 98% | 55,027 psi | 87% | 2333 fps | 100% |
| Lovex S053 | <<locked>> | 82% | 56,913 psi | 90% | 2126 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 54,534 psi | 86% | 2257 fps | 99.3% |
| Lovex S062ᴾ | <<locked>> | 100% | 52,750 psi | 84% | 2290 fps | 99.8% |
| Norma 200 | <<locked>> | 86% | 54,578 psi | 87% | 2224 fps | 100% |
| Norma 201 | <<locked>> | 98% | 55,216 psi | 88% | 2306 fps | 99.9% |
| Norma 202 | <<locked>> | 98% | 55,840 psi | 89% | 2316 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 52,881 psi | 84% | 2329 fps | 99.3% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 53,403 psi | 85% | 2352 fps | 99.2% |
| Ramshot TAC | <<locked>> | 94% | 54,027 psi | 86% | 2293 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 96% | 55,941 psi | 89% | 2349 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 92% | 55,056 psi | 87% | 2287 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,837 psi | 54% | 1358 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 56,797 psi | 90% | 2313 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 52,562 psi | 83% | 2283 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 53,272 psi | 84% | 2392 fps | 99% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 46,949 psi | 74% | 2329 fps | 100% |
| Rottweil R 901 | <<locked>> | 96% | 56,173 psi | 89% | 2293 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 55,637 psi | 88% | 2303 fps | 99.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 45,527 psi | 72% | 2234 fps | 98.9% |
| Shooters World AR Plus | <<locked>> | 84% | 53,345 psi | 85% | 2274 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 55,027 psi | 87% | 2333 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 52,750 psi | 84% | 2290 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,737 psi | 85% | 2251 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 56,913 psi | 90% | 1995 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 56,115 psi | 89% | 2313 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2290 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 56,260 psi | 89% | 2264 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 96% | 54,897 psi | 87% | 2310 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 55,172 psi | 87% | 2329 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 55,027 psi | 87% | 2228 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 50,618 psi | 80% | 2185 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 54,157 psi | 86% | 2313 fps | 99.9% |
| Somchem S335 | <<locked>> | 98% | 56,811 psi | 90% | 2260 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 54,491 psi | 86% | 2310 fps | 99.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 46,804 psi | 74% | 2238 fps | 98.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,257 psi | 53% | 2090 fps | 96.9% |
| Vihtavuori N120 | <<locked>> | 86% | 56,898 psi | 90% | 2169 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 54,998 psi | 87% | 2205 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 54,621 psi | 87% | 2215 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,838 psi | 85% | 2274 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 56,231 psi | 89% | 2297 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,150 psi | 72% | 2188 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 94% | 53,679 psi | 85% | 2280 fps | 99.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 54,331 psi | 86% | 2297 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,495 psi | 66% | 2139 fps | 97.6% |
| Winchester 748 | <<locked>> | 96% | 55,767 psi | 88% | 2359 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 98% | 54,708 psi | 87% | 2339 fps | 99.7% |
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% | 51,517 psi | 82% | 2139 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 35,114 psi | 56% | 1985 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 45,832 psi | 73% | 2188 fps | 97.5% |
| Accurate 2230 | <<locked>> | 80% | 45,832 psi | 73% | 2195 fps | 97.9% |
| Accurate 2460 | <<locked>> | 80% | 37,782 psi | 60% | 2057 fps | 99.4% |
| Accurate 2495 | <<locked>> | 80% | 27,137 psi | 43% | 1896 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 33,083 psi | 52% | 2011 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 25,773 psi | 41% | 1877 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 80% | 43,947 psi | 70% | 2054 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 44,382 psi | 70% | 2070 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 34,447 psi | 55% | 2021 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 47,543 psi | 75% | 2110 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 37,724 psi | 60% | 2064 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 42,409 psi | 67% | 2139 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,287 psi | 54% | 1995 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 80% | 32,401 psi | 51% | 2001 fps | 100% |
| Alliant Power Pro 2000-MR | 42.3 gr | 88% | 37,971 psi | 60% | 2156 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 29,704 psi | 47% | 1952 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,219 psi | 64% | 2067 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 36,825 psi | 58% | 2087 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 33,663 psi | 53% | 2083 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 48,530 psi | 77% | 2123 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,467 psi | 67% | 2057 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 38,014 psi | 60% | 2103 fps | 95.2% |
| Bofors RP3 | <<locked>> | 86% | 30,501 psi | 48% | 1988 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,492 psi | 58% | 1995 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,517 psi | 50% | 1998 fps | 96.8% |
| Hodgdon CFE223 | 40.3 gr | 82% | 37,623 psi | 60% | 2142 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 38,827 psi | 62% | 2083 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 39,189 psi | 62% | 2100 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 94% | 42,047 psi | 67% | 2165 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 48,501 psi | 77% | 2126 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 32,460 psi | 51% | 1988 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 30,705 psi | 49% | 1991 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,019 psi | 40% | 1184 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 31,604 psi | 50% | 1952 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 31,024 psi | 49% | 1995 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 34,751 psi | 55% | 2005 fps | 95% |
| IMR 4166 Enduron | <<locked>> | 96% | 52,228 psi | 83% | 2234 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 41,568 psi | 66% | 2044 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 33,083 psi | 52% | 2028 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 34,287 psi | 54% | 1995 fps | 96.9% |
| Lovex D073.4 | <<locked>> | 80% | 46,412 psi | 74% | 2188 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 37,420 psi | 59% | 2057 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 80% | 29,820 psi | 47% | 1959 fps | 97.4% |
| Lovex S053 | <<locked>> | 80% | 53,417 psi | 85% | 2090 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 33,692 psi | 53% | 1942 fps | 95.2% |
| Lovex S062 | <<locked>> | 82% | 30,066 psi | 48% | 1929 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 45,382 psi | 72% | 2116 fps | 100% |
| Norma 201 | <<locked>> | 80% | 31,488 psi | 50% | 1942 fps | 96.1% |
| Norma 202 | <<locked>> | 80% | 31,430 psi | 50% | 1962 fps | 98.4% |
| Norma 203B | <<locked>> | 86% | 33,837 psi | 54% | 2034 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 88% | 35,984 psi | 57% | 2087 fps | 95.6% |
| Ramshot TAC | <<locked>> | 88% | 44,411 psi | 70% | 2162 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 35,099 psi | 56% | 2044 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,217 psi | 59% | 2031 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,961 psi | 40% | 1211 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,566 psi | 61% | 2067 fps | 99% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 49,385 psi | 78% | 2241 fps | 95.4% |
| ReloadSwiss RS 52 | 40 gr | 86% | 35,505 psi | 56% | 2113 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 27,818 psi | 44% | 1952 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 34,911 psi | 55% | 1991 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 80% | 29,950 psi | 47% | 1906 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 88% | 30,458 psi | 48% | 1978 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 46,412 psi | 74% | 2188 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,820 psi | 47% | 1959 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 30,066 psi | 48% | 1929 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,698 psi | 65% | 2073 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,747 psi | 77% | 1913 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,844 psi | 68% | 2146 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 34,867 psi | 55% | 2070 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,031 psi | 65% | 2077 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 41,785 psi | 66% | 2133 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 35,172 psi | 56% | 2034 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,504 psi | 53% | 1926 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,064 psi | 43% | 1821 fps | 98% |
| Somchem S321 | <<locked>> | 80% | 36,085 psi | 57% | 2054 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 32,866 psi | 52% | 1932 fps | 99.2% |
| Somchem S341 | <<locked>> | 82% | 33,765 psi | 54% | 2001 fps | 95% |
| Somchem S355 | <<locked>> | 88% | 32,024 psi | 51% | 1991 fps | 95.3% |
| Somchem S365 | <<locked>> | 96% | 29,559 psi | 47% | 2005 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 47,572 psi | 75% | 2070 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,261 psi | 61% | 1995 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,475 psi | 53% | 1936 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 28,369 psi | 45% | 1906 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 29,660 psi | 47% | 1913 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 86% | 28,718 psi | 46% | 1906 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 33,982 psi | 54% | 1988 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 80% | 28,427 psi | 45% | 1900 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 34,098 psi | 54% | 2008 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 32,634 psi | 52% | 2018 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 31,966 psi | 51% | 1991 fps | 95.3% |
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 92 powders for .338-06 A-Square loaded with the .338 | 250gr | Lehigh Defense Match Solid. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,444 fps; across all powders the maximum-charge window runs from 1,325 fps to 2,444 fps. Accurate 2495 gives the best case fill at 100 %, and 92 of the 92 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 250.0 gr projectile in 0.338" calls for a 1:11.0 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 2000-MR, ReloadSwiss RS 52 rank at the top here: for .338-06 A-Square with the .338 | 250gr | Lehigh Defense Match Solid 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.