Load Specifications
Load data in caliber .33 Win. with .338 | 250gr | Alaska Bullet Works Kodiak PP SPBC bullet and 56 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 82% | 37,956 psi | 86% | 2014 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 39,044 psi | 88% | 2093 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 38,638 psi | 87% | 2093 fps | 99.3% |
| Accurate 4064 | <<locked>> | 92% | 39,088 psi | 88% | 2119 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 39,537 psi | 89% | 2100 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 39,291 psi | 89% | 2070 fps | 98% |
| Alliant AR-Comp | <<locked>> | 86% | 39,842 psi | 90% | 2110 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 38,783 psi | 88% | 2113 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 90% | 39,755 psi | 90% | 2123 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 38,783 psi | 88% | 2172 fps | 96.8% |
| Bofors RP3 | <<locked>> | 92% | 38,029 psi | 86% | 2113 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 39,450 psi | 89% | 2034 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 86% | 39,363 psi | 89% | 2126 fps | 98.6% |
| Hodgdon H4895 | <<locked>> | 86% | 39,798 psi | 90% | 2110 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 37,768 psi | 85% | 2119 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,823 psi | 76% | 1316 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 38,595 psi | 87% | 2073 fps | 97.1% |
| IMR 3031 | <<locked>> | 86% | 38,101 psi | 86% | 2110 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 39,943 psi | 90% | 2083 fps | 96.4% |
| IMR 4895 | <<locked>> | 88% | 38,101 psi | 86% | 2106 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 84% | 39,291 psi | 89% | 2070 fps | 98% |
| Lovex D073.6 | <<locked>> | 88% | 39,856 psi | 90% | 2123 fps | 99.4% |
| Lovex S060 | <<locked>> | 84% | 38,522 psi | 87% | 2014 fps | 96.5% |
| Lovex S062 | <<locked>> | 90% | 39,247 psi | 89% | 2087 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 38,827 psi | 88% | 2064 fps | 98% |
| Norma 202 | <<locked>> | 86% | 38,696 psi | 87% | 2077 fps | 99.6% |
| Norma 203B | <<locked>> | 90% | 39,030 psi | 88% | 2116 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 90% | 38,841 psi | 88% | 2126 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 37,826 psi | 86% | 2080 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,026 psi | 77% | 1348 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 38,377 psi | 87% | 2152 fps | 96% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 38,972 psi | 88% | 2185 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 82% | 37,913 psi | 86% | 2028 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 88% | 39,102 psi | 88% | 2064 fps | 98% |
| Rottweil R 903 | <<locked>> | 94% | 37,956 psi | 86% | 2106 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 39,856 psi | 90% | 2123 fps | 99.4% |
| Shooters World Precision | <<locked>> | 90% | 39,247 psi | 89% | 2087 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 40,030 psi | 90% | 2152 fps | 96.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 38,450 psi | 87% | 2001 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 37,869 psi | 86% | 2070 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 38,624 psi | 87% | 2001 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 39,827 psi | 90% | 2034 fps | 99.9% |
| Somchem S321 | <<locked>> | 82% | 39,262 psi | 89% | 2093 fps | 98.3% |
| Somchem S335 | <<locked>> | 84% | 37,768 psi | 85% | 2005 fps | 99.8% |
| Somchem S341 | <<locked>> | 86% | 39,131 psi | 88% | 2083 fps | 96.6% |
| Somchem S355 | <<locked>> | 94% | 39,233 psi | 89% | 2110 fps | 97.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,765 psi | 76% | 2083 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 38,450 psi | 87% | 2001 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 39,842 psi | 90% | 2090 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 38,711 psi | 88% | 2060 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 96% | 39,871 psi | 90% | 2100 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 84% | 39,175 psi | 89% | 2067 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 90% | 39,653 psi | 90% | 2093 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 39,218 psi | 89% | 2087 fps | 96.8% |
| Winchester 748 | <<locked>> | 84% | 37,521 psi | 85% | 2096 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 39,450 psi | 89% | 2116 fps | 97.5% |
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% | 35,810 psi | 81% | 1982 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 28,282 psi | 64% | 1903 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 33,910 psi | 77% | 2011 fps | 98.4% |
| Accurate 4064 | <<locked>> | 80% | 26,789 psi | 61% | 1886 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 82% | 34,853 psi | 79% | 2014 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,635 psi | 78% | 1988 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 80% | 32,982 psi | 75% | 2001 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 30,226 psi | 68% | 1949 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 88% | 37,347 psi | 84% | 2080 fps | 95.7% |
| Alliant Reloder-17 | 42.7 gr | 92% | 34,098 psi | 77% | 2077 fps | 95% |
| Bofors RP3 | <<locked>> | 86% | 31,198 psi | 71% | 1988 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,057 psi | 84% | 1991 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,995 psi | 72% | 1991 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 80% | 32,866 psi | 74% | 1982 fps | 95.5% |
| Hodgdon LEVERevolution | 37.9 gr | 82% | 31,198 psi | 71% | 1988 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,019 psi | 57% | 1175 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 34,026 psi | 77% | 1988 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 31,386 psi | 71% | 1988 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 35,375 psi | 80% | 2001 fps | 95% |
| IMR 4895 | <<locked>> | 84% | 33,533 psi | 76% | 2021 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 34,635 psi | 78% | 1988 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 80% | 30,414 psi | 69% | 1955 fps | 97.4% |
| Lovex S060 | <<locked>> | 80% | 34,214 psi | 77% | 1936 fps | 95.2% |
| Lovex S062 | <<locked>> | 82% | 30,589 psi | 69% | 1926 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 32,285 psi | 73% | 1942 fps | 96.2% |
| Norma 202 | <<locked>> | 80% | 31,865 psi | 72% | 1955 fps | 98.4% |
| Norma 203B | <<locked>> | 86% | 34,316 psi | 78% | 2031 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 88% | 36,318 psi | 82% | 2080 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 35,520 psi | 80% | 2037 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,324 psi | 57% | 1207 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 35,984 psi | 81% | 2110 fps | 95.1% |
| ReloadSwiss RS 60 | 39 gr | 84% | 28,340 psi | 64% | 1952 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 35,839 psi | 81% | 1991 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 30,734 psi | 69% | 1906 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 31,111 psi | 70% | 1978 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,414 psi | 69% | 1955 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 30,589 psi | 69% | 1926 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 35,433 psi | 80% | 2067 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,968 psi | 77% | 1929 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 35,592 psi | 80% | 2031 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,084 psi | 77% | 1923 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,615 psi | 62% | 1818 fps | 98% |
| Somchem S321 | <<locked>> | 80% | 36,622 psi | 83% | 2047 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 33,547 psi | 76% | 1932 fps | 99.2% |
| Somchem S341 | <<locked>> | 82% | 34,272 psi | 77% | 1998 fps | 95% |
| Somchem S355 | <<locked>> | 88% | 32,619 psi | 74% | 1988 fps | 95.4% |
| Somchem S365 | <<locked>> | 96% | 30,052 psi | 68% | 2001 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 33,968 psi | 77% | 1929 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 29,022 psi | 66% | 1906 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 30,081 psi | 68% | 1906 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 86% | 29,283 psi | 66% | 1906 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 34,360 psi | 78% | 1982 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 80% | 28,921 psi | 65% | 1896 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 34,563 psi | 78% | 2001 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 33,098 psi | 75% | 2011 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 32,489 psi | 73% | 1988 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 82 powders for .33 Win. loaded with the .338 | 250gr | Alaska Bullet Works Kodiak PP SPBC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,185 fps; across all powders the maximum-charge window runs from 1,316 fps to 2,185 fps. Accurate 4350 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:16.0 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 | 250gr | Alaska Bullet Works Kodiak PP SPBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Power Pro 2000-MR, Alliant Reloder-16 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.