Load Specifications
Load data in caliber .338 Federal with .338 | 250gr | Hornady InterLock RN bullet and 90 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% | 51,663 psi | 86% | 2192 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 52,707 psi | 88% | 2264 fps | 98.5% |
| Accurate 2230 | <<locked>> | 84% | 52,692 psi | 88% | 2270 fps | 98.8% |
| Accurate 2460 | <<locked>> | 90% | 53,229 psi | 88% | 2251 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 53,867 psi | 89% | 2274 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 54,273 psi | 90% | 2297 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 49,937 psi | 83% | 2264 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 53,142 psi | 88% | 2152 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,577 psi | 89% | 2169 fps | 100% |
| ADI AR 2206H | <<locked>> | 96% | 53,621 psi | 89% | 2297 fps | 99.2% |
| ADI AR 2207 | <<locked>> | 84% | 54,172 psi | 90% | 2169 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 51,343 psi | 85% | 2251 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 86% | 52,185 psi | 87% | 2247 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 53,301 psi | 89% | 2264 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 94% | 51,474 psi | 86% | 2247 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,288 psi | 90% | 2346 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 53,011 psi | 88% | 2379 fps | 98.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 49,400 psi | 82% | 2264 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 88% | 52,054 psi | 86% | 2201 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 54,128 psi | 90% | 2323 fps | 98.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 43,888 psi | 73% | 2254 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 51,822 psi | 86% | 2146 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 51,677 psi | 86% | 2156 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 52,997 psi | 88% | 2306 fps | 98.3% |
| Bofors RP3ᴾ | <<locked>> | 100% | 49,182 psi | 82% | 2274 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 92% | 52,794 psi | 88% | 2218 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 94% | 51,169 psi | 85% | 2290 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 92% | 53,127 psi | 88% | 2362 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 90% | 54,172 psi | 90% | 2270 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 51,619 psi | 86% | 2254 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 51,488 psi | 86% | 2280 fps | 97.4% |
| Hodgdon H4198 | <<locked>> | 82% | 51,938 psi | 86% | 2152 fps | 100% |
| Hodgdon H4895 | <<locked>> | 96% | 53,969 psi | 90% | 2306 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 51,880 psi | 86% | 2329 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,953 psi | 56% | 1316 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 52,112 psi | 87% | 2267 fps | 99.3% |
| IMR 3031 | <<locked>> | 96% | 52,475 psi | 87% | 2297 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,056 psi | 90% | 2277 fps | 98.9% |
| IMR 4198 | <<locked>> | 88% | 52,721 psi | 88% | 2165 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 51,982 psi | 86% | 2310 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 94% | 53,301 psi | 89% | 2264 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 84% | 53,447 psi | 89% | 2257 fps | 100% |
| Lovex D073.5 | <<locked>> | 90% | 53,084 psi | 88% | 2257 fps | 100% |
| Lovex D073.6 | <<locked>> | 96% | 51,793 psi | 86% | 2280 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 51,648 psi | 86% | 2205 fps | 98.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 52,982 psi | 88% | 2277 fps | 99.8% |
| Norma 200 | <<locked>> | 84% | 52,025 psi | 86% | 2178 fps | 100% |
| Norma 201 | <<locked>> | 96% | 52,417 psi | 87% | 2254 fps | 99.7% |
| Norma 202 | <<locked>> | 96% | 52,489 psi | 87% | 2264 fps | 100% |
| Norma 203Bᴾ | <<locked>> | 100% | 53,098 psi | 88% | 2313 fps | 99.2% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 53,330 psi | 89% | 2333 fps | 99% |
| Ramshot TAC | <<locked>> | 94% | 53,896 psi | 90% | 2274 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 94% | 52,359 psi | 87% | 2290 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 90% | 51,648 psi | 86% | 2228 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,156 psi | 57% | 1348 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 53,287 psi | 89% | 2257 fps | 100% |
| ReloadSwiss RS 50ᴾ | <<locked>> | 100% | 52,576 psi | 87% | 2264 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 53,359 psi | 89% | 2375 fps | 98.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 46,949 psi | 78% | 2313 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 94% | 53,432 psi | 89% | 2244 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 52,475 psi | 87% | 2247 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 45,890 psi | 76% | 2221 fps | 98.8% |
| Shooters World AR Plus | <<locked>> | 84% | 53,447 psi | 89% | 2257 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 51,793 psi | 86% | 2280 fps | 100% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 52,982 psi | 88% | 2277 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,766 psi | 89% | 2234 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 54,186 psi | 90% | 1952 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 52,750 psi | 88% | 2260 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 48,138 psi | 80% | 2274 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 52,707 psi | 88% | 2211 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 51,401 psi | 85% | 2247 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 52,025 psi | 86% | 2277 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 51,851 psi | 86% | 2175 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 51,024 psi | 85% | 2175 fps | 100% |
| Somchem S321 | <<locked>> | 92% | 54,389 psi | 90% | 2300 fps | 99.9% |
| Somchem S335 | <<locked>> | 96% | 53,925 psi | 90% | 2215 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 54,346 psi | 90% | 2290 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 47,108 psi | 78% | 2224 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,678 psi | 56% | 2077 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 84% | 54,114 psi | 90% | 2126 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 52,141 psi | 87% | 2159 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 51,474 psi | 86% | 2169 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 54,273 psi | 90% | 2264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 52,837 psi | 88% | 2244 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,440 psi | 75% | 2175 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 94% | 54,041 psi | 90% | 2267 fps | 99.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 54,259 psi | 90% | 2280 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 41,684 psi | 69% | 2123 fps | 97.4% |
| Winchester 748 | <<locked>> | 94% | 51,996 psi | 86% | 2300 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 96% | 51,169 psi | 85% | 2280 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 2015 | <<locked>> | 80% | 35,708 psi | 59% | 1975 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 46,267 psi | 77% | 2175 fps | 97.4% |
| Accurate 2230 | <<locked>> | 80% | 45,861 psi | 76% | 2178 fps | 97.7% |
| Accurate 2460 | <<locked>> | 80% | 38,305 psi | 64% | 2047 fps | 99.4% |
| Accurate 2495 | <<locked>> | 80% | 28,181 psi | 47% | 1900 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 33,562 psi | 56% | 2001 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 26,701 psi | 44% | 1880 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 80% | 44,237 psi | 73% | 2044 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 44,614 psi | 74% | 2054 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 34,780 psi | 58% | 2008 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 47,848 psi | 79% | 2096 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 38,014 psi | 63% | 2051 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 42,873 psi | 71% | 2129 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,534 psi | 57% | 1982 fps | 96.7% |
| Alliant AR-Comp | <<locked>> | 80% | 32,880 psi | 55% | 1995 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,363 psi | 65% | 2129 fps | 97.5% |
| Alliant Power Pro 2000-MR | 42.3 gr | 90% | 40,625 psi | 67% | 2185 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 32,126 psi | 53% | 1985 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,654 psi | 68% | 2054 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 37,231 psi | 62% | 2077 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 36,201 psi | 60% | 2116 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,023 psi | 81% | 2113 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,641 psi | 71% | 2044 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 38,435 psi | 64% | 2090 fps | 95.1% |
| Bofors RP3 | <<locked>> | 86% | 31,082 psi | 52% | 1982 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,970 psi | 61% | 1988 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,937 psi | 53% | 1988 fps | 96.7% |
| Hodgdon CFE223 | 39.5 gr | 82% | 38,000 psi | 63% | 2129 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 39,233 psi | 65% | 2073 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 39,494 psi | 66% | 2087 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 94% | 42,351 psi | 70% | 2152 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 48,704 psi | 81% | 2113 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 32,779 psi | 54% | 1975 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 31,096 psi | 52% | 1982 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,106 psi | 42% | 1171 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 33,910 psi | 56% | 1985 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 31,285 psi | 52% | 1985 fps | 99.5% |
| IMR 4064 | <<locked>> | 88% | 37,362 psi | 62% | 2034 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 42,018 psi | 70% | 2034 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 33,475 psi | 56% | 2018 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 34,534 psi | 57% | 1982 fps | 96.7% |
| Lovex D073.4 | <<locked>> | 80% | 46,818 psi | 78% | 2175 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 37,985 psi | 63% | 2047 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 80% | 30,284 psi | 50% | 1949 fps | 97.3% |
| Lovex S060 | <<locked>> | 80% | 34,142 psi | 57% | 1932 fps | 95.1% |
| Lovex S062 | <<locked>> | 82% | 30,501 psi | 51% | 1919 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 46,137 psi | 77% | 2110 fps | 100% |
| Norma 201 | <<locked>> | 80% | 32,198 psi | 53% | 1939 fps | 96.1% |
| Norma 202 | <<locked>> | 80% | 31,778 psi | 53% | 1949 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 34,258 psi | 57% | 2024 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 88% | 36,230 psi | 60% | 2073 fps | 95.4% |
| Ramshot TAC | <<locked>> | 88% | 44,628 psi | 74% | 2146 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 35,476 psi | 59% | 2034 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 37,579 psi | 62% | 2018 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,121 psi | 42% | 1201 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,827 psi | 65% | 2054 fps | 98.9% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 49,356 psi | 82% | 2221 fps | 95.2% |
| ReloadSwiss RS 52 | 39.2 gr | 86% | 35,882 psi | 60% | 2103 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 30,066 psi | 50% | 1991 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 35,737 psi | 59% | 1985 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 80% | 30,661 psi | 51% | 1900 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 88% | 31,024 psi | 52% | 1972 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 46,818 psi | 78% | 2175 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,284 psi | 50% | 1949 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 30,501 psi | 51% | 1919 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 40,988 psi | 68% | 2060 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,052 psi | 81% | 1900 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,105 psi | 72% | 2133 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 35,114 psi | 58% | 2057 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,350 psi | 69% | 2067 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 42,076 psi | 70% | 2119 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 35,534 psi | 59% | 2024 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,997 psi | 56% | 1919 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,528 psi | 46% | 1811 fps | 97.9% |
| Somchem S321 | <<locked>> | 80% | 36,506 psi | 61% | 2041 fps | 97.6% |
| Somchem S335 | <<locked>> | 80% | 33,460 psi | 56% | 1926 fps | 99.2% |
| Somchem S341 | <<locked>> | 84% | 36,405 psi | 60% | 2034 fps | 95.7% |
| Somchem S355 | <<locked>> | 88% | 32,503 psi | 54% | 1985 fps | 95.2% |
| Somchem S365 | <<locked>> | 96% | 29,994 psi | 50% | 1995 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 47,848 psi | 79% | 2057 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,653 psi | 64% | 1985 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 33,881 psi | 56% | 1926 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 28,921 psi | 48% | 1900 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 29,979 psi | 50% | 1900 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 86% | 29,182 psi | 48% | 1900 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 34,287 psi | 57% | 1975 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 80% | 28,819 psi | 48% | 1893 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 34,563 psi | 57% | 1998 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 32,982 psi | 55% | 2005 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 32,372 psi | 54% | 1982 fps | 95.2% |
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 Federal loaded with the .338 | 250gr | Hornady InterLock RN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,379 fps; across all powders the maximum-charge window runs from 1,316 fps to 2,379 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 (415 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:6.0 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 Federal with the .338 | 250gr | Hornady InterLock RN 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.