Load Specifications
Load data in caliber .33 Win. with .338 | 250gr | Nosler Partition Gold bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon LEVERevolution and Bofors RP3.
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>> | 84% | 39,276 psi | 89% | 2024 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 39,842 psi | 90% | 2064 fps | 99.5% |
| Accurate 2495 | <<locked>> | 92% | 39,943 psi | 90% | 2096 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 38,261 psi | 86% | 2087 fps | 99.1% |
| Accurate 2520 | <<locked>> | 86% | 38,261 psi | 86% | 2087 fps | 99.1% |
| Accurate 4064 | <<locked>> | 94% | 40,030 psi | 90% | 2123 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 38,261 psi | 86% | 2064 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 38,261 psi | 86% | 2041 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 86% | 38,595 psi | 87% | 2080 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 39,813 psi | 90% | 2116 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 90% | 38,276 psi | 87% | 2083 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 39,943 psi | 90% | 2175 fps | 96.8% |
| Bofors RP3 | <<locked>> | 94% | 39,088 psi | 88% | 2119 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 38,406 psi | 87% | 2001 fps | 98.1% |
| Hodgdon BL-C2 | <<locked>> | 86% | 37,869 psi | 86% | 2090 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 84% | 39,363 psi | 89% | 2142 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 82% | 37,797 psi | 85% | 2041 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 86% | 38,464 psi | 87% | 2073 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 38,841 psi | 88% | 2123 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,837 psi | 76% | 1306 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 39,044 psi | 88% | 2067 fps | 97% |
| IMR 3031 | <<locked>> | 90% | 38,072 psi | 86% | 2100 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 39,117 psi | 88% | 2110 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 84% | 38,261 psi | 86% | 2041 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 82% | 39,566 psi | 89% | 2064 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 88% | 38,261 psi | 86% | 2087 fps | 99.1% |
| Lovex S060 | <<locked>> | 86% | 39,740 psi | 90% | 2021 fps | 96.6% |
| Lovex S062 | <<locked>> | 90% | 37,942 psi | 86% | 2054 fps | 97.6% |
| Norma 201 | <<locked>> | 88% | 40,030 psi | 90% | 2070 fps | 98% |
| Norma 202 | <<locked>> | 88% | 39,900 psi | 90% | 2087 fps | 99.6% |
| Norma 203B | <<locked>> | 90% | 37,492 psi | 85% | 2077 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 39,102 psi | 88% | 2090 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,131 psi | 88% | 2034 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,721 psi | 76% | 1335 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 39,711 psi | 90% | 2162 fps | 96% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 37,623 psi | 85% | 2142 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 84% | 39,160 psi | 89% | 2037 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 88% | 37,797 psi | 85% | 2028 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 96% | 39,015 psi | 88% | 2110 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 38,261 psi | 86% | 2087 fps | 99.1% |
| Shooters World Precision | <<locked>> | 90% | 37,942 psi | 86% | 2054 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 38,856 psi | 88% | 2116 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 39,175 psi | 89% | 2080 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 39,813 psi | 90% | 2005 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 38,595 psi | 87% | 2005 fps | 99.8% |
| Somchem S321 | <<locked>> | 82% | 38,029 psi | 86% | 2060 fps | 97.8% |
| Somchem S335 | <<locked>> | 86% | 38,899 psi | 88% | 2011 fps | 99.8% |
| Somchem S341 | <<locked>> | 86% | 37,739 psi | 85% | 2047 fps | 95.9% |
| Somchem S355 | <<locked>> | 94% | 38,014 psi | 86% | 2077 fps | 96.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 32,750 psi | 74% | 2047 fps | 96.1% |
| Vihtavuori N133 | <<locked>> | 86% | 39,610 psi | 90% | 2008 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 38,348 psi | 87% | 2057 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 39,958 psi | 90% | 2067 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 96% | 38,769 psi | 88% | 2070 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 84% | 37,811 psi | 85% | 2031 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 90% | 38,508 psi | 87% | 2064 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,145 psi | 86% | 2051 fps | 96.1% |
| Winchester 748 | <<locked>> | 84% | 39,349 psi | 89% | 2113 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 82% | 39,175 psi | 89% | 2100 fps | 97.2% |
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% | 34,577 psi | 78% | 1949 fps | 99.9% |
| Accurate 2460 | <<locked>> | 80% | 37,304 psi | 84% | 2021 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 27,108 psi | 61% | 1870 fps | 99.3% |
| Accurate 2520 | <<locked>> | 80% | 31,183 psi | 70% | 1959 fps | 97.5% |
| Accurate 2520 | <<locked>> | 80% | 31,183 psi | 70% | 1959 fps | 97.5% |
| Accurate 4064 | <<locked>> | 80% | 25,701 psi | 58% | 1850 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 84% | 36,129 psi | 82% | 2024 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,562 psi | 76% | 1955 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 80% | 31,792 psi | 72% | 1969 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 31,024 psi | 70% | 1955 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 88% | 36,114 psi | 82% | 2044 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 94% | 35,186 psi | 80% | 2083 fps | 95.1% |
| Bofors RP3 | 38.2 gr | 88% | 32,082 psi | 73% | 1995 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,984 psi | 81% | 1959 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,053 psi | 70% | 1962 fps | 96.2% |
| Hodgdon CFE223 | <<locked>> | 82% | 36,912 psi | 83% | 2100 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 35,302 psi | 80% | 2001 fps | 99.5% |
| Hodgdon H4895 | <<locked>> | 82% | 33,968 psi | 77% | 1991 fps | 95.6% |
| Hodgdon LEVERevolution | 37.7 gr | 86% | 32,358 psi | 73% | 1998 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,063 psi | 57% | 1165 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 34,534 psi | 78% | 1985 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 28,021 psi | 63% | 1906 fps | 98.7% |
| IMR 4895 | <<locked>> | 86% | 34,505 psi | 78% | 2028 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 33,562 psi | 76% | 1955 fps | 96.2% |
| Lovex D073.5 | <<locked>> | 80% | 36,738 psi | 83% | 2018 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 29,341 psi | 66% | 1923 fps | 96.9% |
| Lovex S060 | <<locked>> | 82% | 35,201 psi | 80% | 1942 fps | 95.2% |
| Lovex S062 | <<locked>> | 84% | 31,618 psi | 71% | 1936 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 31,241 psi | 71% | 1909 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 30,980 psi | 70% | 1926 fps | 98% |
| Norma 203B | <<locked>> | 88% | 35,375 psi | 80% | 2037 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 36,680 psi | 83% | 2047 fps | 95.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 36,738 psi | 83% | 1995 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,077 psi | 57% | 1191 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 37,202 psi | 84% | 2116 fps | 95.2% |
| ReloadSwiss RS 60 | 38.7 gr | 86% | 29,283 psi | 66% | 1959 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 34,606 psi | 78% | 1955 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 31,488 psi | 71% | 1909 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 90% | 32,010 psi | 72% | 1985 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,341 psi | 66% | 1923 fps | 96.9% |
| Shooters World Precision | <<locked>> | 84% | 31,618 psi | 71% | 1936 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 36,463 psi | 82% | 2073 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 34,461 psi | 78% | 1995 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,214 psi | 75% | 1896 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,905 psi | 61% | 1791 fps | 97.6% |
| Somchem S321 | <<locked>> | 80% | 35,621 psi | 81% | 2018 fps | 97.2% |
| Somchem S335 | <<locked>> | 80% | 32,489 psi | 73% | 1900 fps | 98.9% |
| Somchem S341 | <<locked>> | 84% | 35,404 psi | 80% | 2005 fps | 95.1% |
| Somchem S355 | <<locked>> | 90% | 33,562 psi | 76% | 1998 fps | 95.4% |
| Somchem S365 | <<locked>> | 98% | 30,763 psi | 70% | 2001 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 33,083 psi | 75% | 1903 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 28,065 psi | 63% | 1877 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 29,327 psi | 66% | 1877 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 88% | 30,139 psi | 68% | 1913 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 33,315 psi | 75% | 1949 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 80% | 28,007 psi | 63% | 1867 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 35,621 psi | 81% | 2005 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 34,563 psi | 78% | 2028 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,477 psi | 82% | 2051 fps | 96.4% |
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 59 powders for .33 Win. loaded with the .338 | 250gr | Nosler Partition Gold. Alliant Reloder-17 delivers the highest muzzle velocity at 2,175 fps; across all powders the maximum-charge window runs from 1,306 fps to 2,175 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 59 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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, Hodgdon LEVERevolution, Bofors RP3 rank at the top here: for .33 Win. with the .338 | 250gr | Nosler Partition Gold 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.