Load Specifications
Load data in caliber .338 Federal with .338 | 300gr | Woodleigh RN SN bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon CFE223 and Accurate 2200.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 53,650 psi | 89% | 1791 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 53,679 psi | 89% | 1854 fps | 100% |
| Accurate 2200 | <<locked>> | 90% | 53,258 psi | 88% | 1886 fps | 97.8% |
| Accurate 2230 | <<locked>> | 90% | 52,779 psi | 88% | 1890 fps | 98% |
| Accurate 2460 | <<locked>> | 96% | 52,547 psi | 87% | 1877 fps | 100% |
| Accurate 2495ᴾ | <<locked>> | 100% | 41,727 psi | 69% | 1798 fps | 100% |
| Accurate 2520ᴾ | <<locked>> | 100% | 50,198 psi | 83% | 1896 fps | 99.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 38,870 psi | 65% | 1785 fps | 99.6% |
| Accurate LT-30 | <<locked>> | 92% | 54,012 psi | 90% | 1798 fps | 100% |
| Accurate LT-32 | <<locked>> | 90% | 51,372 psi | 85% | 1778 fps | 99.8% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 49,356 psi | 82% | 1873 fps | 98% |
| ADI AR 2207 | <<locked>> | 90% | 54,331 psi | 90% | 1814 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 52,141 psi | 87% | 1880 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 52,547 psi | 87% | 1880 fps | 99.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,647 psi | 82% | 1873 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 53,345 psi | 89% | 1952 fps | 99.2% |
| Alliant Power Pro 2000-MRᴾ | <<locked>> | 100% | 46,195 psi | 77% | 1890 fps | 95.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 39,436 psi | 66% | 1778 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 96% | 54,288 psi | 90% | 1864 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 43,236 psi | 72% | 1821 fps | 96.4% |
| Alliant Reloder-7 | <<locked>> | 88% | 52,736 psi | 88% | 1798 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 52,156 psi | 87% | 1804 fps | 100% |
| Baschieri & Pellagri 107ᴾ | <<locked>> | 100% | 49,400 psi | 82% | 1883 fps | 96.7% |
| Bofors RP3ᴾ | <<locked>> | 100% | 38,508 psi | 64% | 1781 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 98% | 53,142 psi | 88% | 1847 fps | 99.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 49,588 psi | 82% | 1903 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 98% | 52,402 psi | 87% | 1959 fps | 98% |
| Hodgdon H322 | <<locked>> | 96% | 53,809 psi | 89% | 1896 fps | 100% |
| Hodgdon H335 | <<locked>> | 94% | 51,517 psi | 86% | 1886 fps | 100% |
| Hodgdon H4198 | <<locked>> | 88% | 53,417 psi | 89% | 1801 fps | 100% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 49,545 psi | 82% | 1880 fps | 98.6% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 44,802 psi | 74% | 1860 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,663 psi | 54% | 1053 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 48,544 psi | 81% | 1850 fps | 98.2% |
| IMR 3031ᴾ | <<locked>> | 100% | 47,282 psi | 79% | 1877 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 44,048 psi | 73% | 1785 fps | 96.4% |
| IMR 4198 | <<locked>> | 94% | 52,881 psi | 88% | 1808 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 53,156 psi | 88% | 1752 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 44,164 psi | 73% | 1844 fps | 97.3% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 52,547 psi | 87% | 1880 fps | 99.3% |
| Lovex D073.4 | <<locked>> | 90% | 53,359 psi | 89% | 1883 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 96% | 52,286 psi | 87% | 1877 fps | 99.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,601 psi | 77% | 1860 fps | 99.7% |
| Lovex S053 | <<locked>> | 84% | 52,315 psi | 87% | 1719 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 51,663 psi | 86% | 1831 fps | 98.2% |
| Lovex S062ᴾ | <<locked>> | 100% | 42,685 psi | 71% | 1791 fps | 98.1% |
| Norma 200 | <<locked>> | 90% | 51,779 psi | 86% | 1824 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 48,399 psi | 80% | 1841 fps | 98.9% |
| Norma 202ᴾ | <<locked>> | 100% | 47,877 psi | 80% | 1850 fps | 99.9% |
| Norma 203Bᴾ | <<locked>> | 100% | 42,337 psi | 70% | 1814 fps | 96.8% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 43,192 psi | 72% | 1827 fps | 96.3% |
| Ramshot TACᴾ | <<locked>> | 100% | 53,954 psi | 90% | 1890 fps | 96% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 51,634 psi | 86% | 1903 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 96% | 51,895 psi | 86% | 1857 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,634 psi | 54% | 1079 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 84% | 53,069 psi | 88% | 1781 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 53,330 psi | 89% | 1883 fps | 99.9% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 45,382 psi | 75% | 1890 fps | 96.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 38,218 psi | 63% | 1801 fps | 97.9% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 52,591 psi | 87% | 1867 fps | 100% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 45,382 psi | 75% | 1801 fps | 98.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 35,708 psi | 59% | 1736 fps | 95.9% |
| Shooters World AR Plus | <<locked>> | 90% | 53,359 psi | 89% | 1883 fps | 99.9% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,601 psi | 77% | 1860 fps | 99.7% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 42,685 psi | 71% | 1791 fps | 98.1% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 50,705 psi | 84% | 1827 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 52,852 psi | 88% | 1611 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 52,489 psi | 87% | 1886 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 52,417 psi | 87% | 1844 fps | 100% |
| SNPE Vectan SP 7ᴾ | <<locked>> | 100% | 51,155 psi | 85% | 1870 fps | 96.1% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 47,718 psi | 79% | 1854 fps | 97.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 52,156 psi | 87% | 1814 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,698 psi | 69% | 1722 fps | 99.8% |
| Somchem S321 | <<locked>> | 98% | 53,838 psi | 89% | 1916 fps | 99.5% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,154 psi | 83% | 1814 fps | 100% |
| Somchem S341ᴾ | <<locked>> | 100% | 50,386 psi | 84% | 1870 fps | 97.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 37,681 psi | 63% | 1745 fps | 96.2% |
| Vihtavuori N120 | <<locked>> | 90% | 54,404 psi | 90% | 1778 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 51,924 psi | 86% | 1801 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 51,242 psi | 85% | 1808 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,120 psi | 72% | 1795 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,527 psi | 76% | 1804 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 36,361 psi | 60% | 1706 fps | 97.1% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 53,722 psi | 89% | 1886 fps | 99.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 43,758 psi | 73% | 1804 fps | 99.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 51,271 psi | 85% | 1916 fps | 99.7% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 46,949 psi | 78% | 1860 fps | 98.1% |
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% | 44,309 psi | 74% | 1699 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 29,080 psi | 48% | 1558 fps | 99.2% |
| Accurate 2200 | 25.5 gr | 82% | 41,075 psi | 68% | 1745 fps | 95.3% |
| Accurate 2230 | <<locked>> | 82% | 40,176 psi | 67% | 1745 fps | 95.6% |
| Accurate 2460 | <<locked>> | 80% | 30,821 psi | 51% | 1608 fps | 97.3% |
| Accurate 2495 | <<locked>> | 80% | 21,814 psi | 36% | 1490 fps | 97.6% |
| Accurate 2520 | <<locked>> | 82% | 27,311 psi | 45% | 1591 fps | 95.7% |
| Accurate 4064 | <<locked>> | 84% | 23,554 psi | 39% | 1532 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 37,956 psi | 63% | 1624 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 80% | 38,363 psi | 64% | 1627 fps | 98.5% |
| ADI AR 2206H | <<locked>> | 90% | 36,608 psi | 61% | 1709 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 40,132 psi | 67% | 1677 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,215 psi | 59% | 1683 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 32,285 psi | 54% | 1624 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 26,789 psi | 45% | 1575 fps | 100% |
| Alliant Power Pro 1200-R | 25.1 gr | 82% | 33,982 psi | 56% | 1703 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 43,497 psi | 72% | 1854 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 32,967 psi | 55% | 1680 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,634 psi | 56% | 1634 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 38,334 psi | 64% | 1755 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,379 psi | 69% | 1683 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,071 psi | 60% | 1624 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 43,149 psi | 72% | 1808 fps | 95.3% |
| Bofors RP3 | <<locked>> | 94% | 31,560 psi | 52% | 1680 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 31,053 psi | 52% | 1565 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 84% | 29,399 psi | 49% | 1627 fps | 95% |
| Hodgdon CFE223 | 30.1 gr | 90% | 40,567 psi | 67% | 1814 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 32,401 psi | 54% | 1637 fps | 98.8% |
| Hodgdon H335 | <<locked>> | 80% | 32,430 psi | 54% | 1647 fps | 98% |
| Hodgdon H4198 | <<locked>> | 80% | 41,887 psi | 70% | 1680 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 88% | 34,548 psi | 57% | 1686 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 34,809 psi | 58% | 1719 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,352 psi | 40% | 945 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 36,085 psi | 60% | 1690 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 25,686 psi | 43% | 1562 fps | 97.6% |
| IMR 4064 | <<locked>> | 96% | 38,972 psi | 65% | 1722 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 35,636 psi | 59% | 1621 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 47,355 psi | 79% | 1699 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 36,811 psi | 61% | 1745 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 84% | 32,285 psi | 54% | 1624 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 38,145 psi | 63% | 1713 fps | 98.5% |
| Lovex D073.5 | <<locked>> | 80% | 30,690 psi | 51% | 1608 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 84% | 27,311 psi | 45% | 1591 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 46,702 psi | 78% | 1667 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 38,508 psi | 64% | 1673 fps | 95.5% |
| Lovex S062 | <<locked>> | 90% | 31,560 psi | 52% | 1634 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 38,174 psi | 63% | 1677 fps | 100% |
| Norma 201 | <<locked>> | 86% | 31,720 psi | 53% | 1617 fps | 95.2% |
| Norma 202 | <<locked>> | 80% | 25,947 psi | 43% | 1535 fps | 95.8% |
| Norma 203B | <<locked>> | 96% | 37,463 psi | 62% | 1749 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 98% | 40,756 psi | 68% | 1795 fps | 95.7% |
| Ramshot TAC | <<locked>> | 98% | 50,865 psi | 85% | 1857 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 90% | 37,681 psi | 63% | 1736 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 37,739 psi | 63% | 1686 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,091 psi | 40% | 965 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,007 psi | 78% | 1726 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 32,169 psi | 53% | 1621 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 40,205 psi | 67% | 1821 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 31,850 psi | 53% | 1690 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 29,544 psi | 49% | 1565 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 88% | 31,865 psi | 53% | 1617 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 98% | 33,562 psi | 56% | 1703 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 38,145 psi | 63% | 1713 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 27,311 psi | 45% | 1591 fps | 95.7% |
| Shooters World Precision | <<locked>> | 90% | 31,560 psi | 52% | 1634 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 34,026 psi | 57% | 1624 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,062 psi | 72% | 1526 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,607 psi | 59% | 1686 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,389 psi | 57% | 1637 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 98% | 47,485 psi | 79% | 1831 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 37,376 psi | 62% | 1722 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 28,500 psi | 47% | 1516 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 23,192 psi | 39% | 1427 fps | 95.4% |
| Somchem S321 | <<locked>> | 82% | 31,676 psi | 53% | 1640 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 27,717 psi | 46% | 1519 fps | 97.3% |
| Somchem S341 | <<locked>> | 92% | 38,522 psi | 64% | 1729 fps | 95.3% |
| Somchem S355 | <<locked>> | 98% | 35,447 psi | 59% | 1716 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 40,248 psi | 67% | 1644 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,489 psi | 54% | 1578 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,268 psi | 47% | 1522 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 80% | 23,511 psi | 39% | 1496 fps | 97.8% |
| Vihtavuori N140 | <<locked>> | 80% | 24,700 psi | 41% | 1493 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 94% | 30,327 psi | 50% | 1611 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 84% | 31,995 psi | 53% | 1617 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 82% | 25,251 psi | 42% | 1519 fps | 95.1% |
| Winchester 748 | <<locked>> | 84% | 30,676 psi | 51% | 1637 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 92% | 36,303 psi | 60% | 1722 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 95 powders for .338 Federal loaded with the .338 | 300gr | Woodleigh RN SN. Hodgdon CFE223 delivers the highest muzzle velocity at 1,959 fps; across all powders the maximum-charge window runs from 1,053 fps to 1,959 fps. Accurate 2015 gives the best case fill at 100 %, and 95 of the 95 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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 1200-R, Hodgdon CFE223, Accurate 2200 rank at the top here: for .338 Federal with the .338 | 300gr | Woodleigh RN SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-17, Hodgdon H380, IMR 4166 Enduron burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.