Load Specifications
Load data in caliber .33 Win. with .338 | 275gr | Alaska Bullet Works Kodiak SP SPBC bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Hodgdon LEVERevolution.
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 2015 | <<locked>> | 82% | 39,204 psi | 89% | 1909 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 37,623 psi | 85% | 1946 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 38,348 psi | 87% | 1975 fps | 99.6% |
| Accurate 2520 | <<locked>> | 84% | 38,348 psi | 87% | 1975 fps | 99.6% |
| Accurate 4064 | <<locked>> | 90% | 37,884 psi | 86% | 1975 fps | 99.9% |
| Accurate 4350ᴾ | <<locked>> | 100% | 37,869 psi | 86% | 2028 fps | 96% |
| ADI AR 2206H | <<locked>> | 84% | 38,145 psi | 86% | 1952 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 90% | 39,073 psi | 88% | 1952 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 37,753 psi | 85% | 1923 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 84% | 38,479 psi | 87% | 1959 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 39,088 psi | 88% | 2041 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 39,871 psi | 90% | 2005 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 88% | 38,145 psi | 86% | 1975 fps | 96.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 39,929 psi | 90% | 2037 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 39,624 psi | 90% | 2064 fps | 97.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 39,305 psi | 89% | 1988 fps | 96.3% |
| Bofors RP3 | <<locked>> | 92% | 39,059 psi | 88% | 2005 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 84% | 37,884 psi | 86% | 1978 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 82% | 38,972 psi | 88% | 2028 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 82% | 39,827 psi | 90% | 1959 fps | 100% |
| Hodgdon H4895 | <<locked>> | 84% | 38,392 psi | 87% | 1962 fps | 97.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 36,100 psi | 82% | 1952 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 38,812 psi | 88% | 2014 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,171 psi | 77% | 1237 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 38,580 psi | 87% | 1952 fps | 97.8% |
| IMR 3031 | <<locked>> | 88% | 38,014 psi | 86% | 1982 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 38,029 psi | 86% | 1929 fps | 96.7% |
| IMR 4895 | <<locked>> | 88% | 38,986 psi | 88% | 1998 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 82% | 37,753 psi | 85% | 1923 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 86% | 38,348 psi | 87% | 1975 fps | 99.6% |
| Lovex S060 | <<locked>> | 84% | 39,305 psi | 89% | 1909 fps | 97.4% |
| Lovex S062 | <<locked>> | 88% | 37,695 psi | 85% | 1939 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 39,610 psi | 90% | 1955 fps | 98.7% |
| Norma 202 | <<locked>> | 86% | 39,552 psi | 89% | 1965 fps | 99.9% |
| Norma 203B | <<locked>> | 90% | 40,001 psi | 90% | 2008 fps | 97.8% |
| Norma URPᴾ | <<locked>> | 100% | 39,189 psi | 89% | 2028 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 90% | 39,639 psi | 90% | 2018 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 39,044 psi | 88% | 1978 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,142 psi | 77% | 1263 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 39,450 psi | 89% | 2047 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 39,943 psi | 90% | 2080 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 38,740 psi | 88% | 1919 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 88% | 39,943 psi | 90% | 1952 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 94% | 38,986 psi | 88% | 1998 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 38,348 psi | 87% | 1975 fps | 99.6% |
| Shooters World Precision | <<locked>> | 88% | 37,695 psi | 85% | 1939 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 38,653 psi | 87% | 2008 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 39,030 psi | 88% | 1969 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 39,552 psi | 89% | 1893 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 38,450 psi | 87% | 1893 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 38,653 psi | 87% | 1896 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 40,001 psi | 90% | 1975 fps | 97.5% |
| Somchem S355 | <<locked>> | 92% | 38,043 psi | 86% | 1969 fps | 97.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 34,708 psi | 78% | 1988 fps | 98% |
| Vihtavuori N133 | <<locked>> | 84% | 39,465 psi | 89% | 1893 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 38,392 psi | 87% | 1942 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 39,740 psi | 90% | 1952 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 38,580 psi | 87% | 1959 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 37,594 psi | 85% | 1919 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 88% | 38,130 psi | 86% | 1949 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 37,579 psi | 85% | 1946 fps | 97.2% |
| Winchester 748 | <<locked>> | 82% | 38,914 psi | 88% | 1995 fps | 99.2% |
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% | 36,854 psi | 83% | 1877 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 29,153 psi | 66% | 1808 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 33,301 psi | 75% | 1893 fps | 98.8% |
| Accurate 2520 | <<locked>> | 80% | 33,301 psi | 75% | 1893 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 27,644 psi | 62% | 1791 fps | 98.4% |
| Accurate 4350 | <<locked>> | 98% | 35,201 psi | 80% | 1985 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 33,649 psi | 76% | 1873 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 86% | 34,693 psi | 78% | 1880 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,578 psi | 80% | 1886 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 33,852 psi | 77% | 1890 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 36,912 psi | 83% | 2001 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 29,225 psi | 66% | 1814 fps | 95.5% |
| Alliant Reloder-15 | <<locked>> | 84% | 33,852 psi | 77% | 1900 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 98% | 37,681 psi | 85% | 1998 fps | 95.4% |
| Alliant Reloder-17 | 39.4 gr | 90% | 32,851 psi | 74% | 1939 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 36,854 psi | 83% | 1949 fps | 95.6% |
| Bofors RP3 | <<locked>> | 82% | 28,181 psi | 64% | 1811 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,083 psi | 75% | 1896 fps | 97.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 36,492 psi | 82% | 1985 fps | 96.2% |
| Hodgdon H322 | <<locked>> | 80% | 37,391 psi | 85% | 1923 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 33,779 psi | 76% | 1883 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 32,097 psi | 73% | 1877 fps | 95.4% |
| Hodgdon LEVERevolution | 35 gr | 82% | 30,327 psi | 69% | 1857 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,411 psi | 57% | 1102 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 30,385 psi | 69% | 1801 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 29,704 psi | 67% | 1837 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 33,692 psi | 76% | 1854 fps | 95.3% |
| IMR 4895 | <<locked>> | 82% | 32,300 psi | 73% | 1880 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 35,578 psi | 80% | 1886 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 31,328 psi | 71% | 1857 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 34,940 psi | 79% | 1834 fps | 96.2% |
| Lovex S062 | <<locked>> | 80% | 29,631 psi | 67% | 1795 fps | 96.1% |
| Norma 201 | <<locked>> | 80% | 33,098 psi | 75% | 1844 fps | 97.2% |
| Norma 202 | <<locked>> | 80% | 32,953 psi | 74% | 1860 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 31,009 psi | 70% | 1850 fps | 95.1% |
| Norma URP | <<locked>> | 98% | 36,927 psi | 83% | 1991 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 32,866 psi | 74% | 1896 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 34,185 psi | 77% | 1896 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,483 psi | 58% | 1129 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 34,693 psi | 78% | 1965 fps | 95.6% |
| ReloadSwiss RS 60 | 35.9 gr | 82% | 27,340 psi | 62% | 1821 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 36,550 psi | 83% | 1883 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 31,459 psi | 71% | 1808 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 86% | 30,139 psi | 68% | 1844 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,328 psi | 71% | 1857 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 29,631 psi | 67% | 1795 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 32,068 psi | 72% | 1886 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 32,198 psi | 73% | 1850 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,983 psi | 79% | 1824 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,369 psi | 64% | 1726 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 34,330 psi | 78% | 1827 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 32,764 psi | 74% | 1854 fps | 95.4% |
| Somchem S355 | <<locked>> | 84% | 29,675 psi | 67% | 1818 fps | 95.1% |
| Somchem S365 | <<locked>> | 94% | 28,964 psi | 65% | 1867 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 34,896 psi | 79% | 1827 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 29,965 psi | 68% | 1808 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 30,908 psi | 70% | 1808 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 26,556 psi | 60% | 1739 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 35,389 psi | 80% | 1883 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 80% | 29,617 psi | 67% | 1801 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 33,098 psi | 75% | 1864 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 36,376 psi | 82% | 1952 fps | 98.8% |
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 62 powders for .33 Win. loaded with the .338 | 275gr | Alaska Bullet Works Kodiak SP SPBC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,080 fps; across all powders the maximum-charge window runs from 1,237 fps to 2,080 fps. Accurate 4350 gives the best case fill at 100 %, and 62 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 77–90 %, leaving at least 10 % headroom. The 275.0 gr projectile in 0.338" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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. ReloadSwiss RS 60, Alliant Reloder-17, Hodgdon LEVERevolution rank at the top here: for .33 Win. with the .338 | 275gr | Alaska Bullet Works Kodiak SP SPBC they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss 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.