Load Specifications
Load data in caliber .33 Win. with .338 | 250gr | Hornady SP bullet and 60 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, IMR 3031 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>> | 84% | 39,610 psi | 90% | 2034 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 37,840 psi | 86% | 2067 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 38,841 psi | 88% | 2100 fps | 99.2% |
| Accurate 4064 | <<locked>> | 92% | 38,014 psi | 86% | 2096 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 86% | 38,522 psi | 87% | 2070 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 92% | 39,653 psi | 90% | 2073 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 38,551 psi | 87% | 2047 fps | 97.7% |
| Alliant AR-Comp | <<locked>> | 86% | 38,899 psi | 88% | 2087 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 40,016 psi | 90% | 2123 fps | 97.8% |
| Alliant Reloder-15 | <<locked>> | 90% | 38,812 psi | 88% | 2096 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 37,927 psi | 86% | 2142 fps | 96.3% |
| Bofors RP3 | <<locked>> | 94% | 39,334 psi | 89% | 2126 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 38,682 psi | 87% | 2011 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 86% | 38,392 psi | 87% | 2103 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 84% | 39,885 psi | 90% | 2156 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 82% | 38,130 psi | 86% | 2051 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 86% | 38,725 psi | 88% | 2080 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 39,363 psi | 89% | 2136 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,808 psi | 76% | 1309 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 39,276 psi | 89% | 2073 fps | 97.1% |
| IMR 3031 | <<locked>> | 90% | 38,363 psi | 87% | 2106 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 38,392 psi | 87% | 2047 fps | 95.8% |
| IMR 4895 | <<locked>> | 90% | 39,668 psi | 90% | 2126 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 84% | 38,551 psi | 87% | 2047 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 82% | 39,813 psi | 90% | 2070 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 88% | 38,841 psi | 88% | 2100 fps | 99.2% |
| Lovex S060 | <<locked>> | 86% | 39,972 psi | 90% | 2031 fps | 96.7% |
| Lovex S062 | <<locked>> | 90% | 38,189 psi | 86% | 2060 fps | 97.8% |
| Norma 201 | <<locked>> | 86% | 37,768 psi | 85% | 2037 fps | 97.6% |
| Norma 202 | <<locked>> | 86% | 37,594 psi | 85% | 2051 fps | 99.4% |
| Norma 203B | <<locked>> | 90% | 38,014 psi | 86% | 2090 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 90% | 37,811 psi | 85% | 2096 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 39,595 psi | 90% | 2100 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 82% | 39,378 psi | 89% | 2044 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,997 psi | 77% | 1342 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 39,972 psi | 90% | 2172 fps | 96.2% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 38,043 psi | 86% | 2156 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 84% | 39,479 psi | 89% | 2044 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 88% | 38,029 psi | 86% | 2034 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 96% | 39,247 psi | 89% | 2116 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 38,841 psi | 88% | 2100 fps | 99.2% |
| Shooters World Precision | <<locked>> | 90% | 38,189 psi | 86% | 2060 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 39,015 psi | 88% | 2123 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 39,378 psi | 89% | 2087 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 37,753 psi | 85% | 1978 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 39,160 psi | 89% | 2018 fps | 99.9% |
| Somchem S321 | <<locked>> | 82% | 38,290 psi | 87% | 2067 fps | 97.9% |
| Somchem S335 | <<locked>> | 86% | 39,146 psi | 88% | 2018 fps | 99.8% |
| Somchem S341 | <<locked>> | 86% | 38,203 psi | 86% | 2060 fps | 96.1% |
| Somchem S355 | <<locked>> | 94% | 38,276 psi | 87% | 2087 fps | 97% |
| Somchem S365ᴾ | <<locked>> | 100% | 33,141 psi | 75% | 2060 fps | 96.3% |
| Vihtavuori N133 | <<locked>> | 86% | 39,914 psi | 90% | 2014 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 38,986 psi | 88% | 2070 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 37,956 psi | 86% | 2041 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 96% | 38,986 psi | 88% | 2077 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 84% | 38,377 psi | 87% | 2044 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 90% | 38,740 psi | 88% | 2070 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,493 psi | 87% | 2060 fps | 96.3% |
| Winchester 748 | <<locked>> | 84% | 39,595 psi | 90% | 2119 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 82% | 39,407 psi | 89% | 2106 fps | 97.3% |
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% | 34,882 psi | 79% | 1959 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 27,427 psi | 62% | 1880 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 31,488 psi | 71% | 1969 fps | 97.6% |
| Accurate 4064 | <<locked>> | 80% | 26,005 psi | 59% | 1860 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 34,113 psi | 77% | 1991 fps | 95% |
| ADI AR 2208 | <<locked>> | 90% | 37,188 psi | 84% | 2031 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,852 psi | 77% | 1962 fps | 96.4% |
| Alliant AR-Comp | <<locked>> | 80% | 32,126 psi | 73% | 1978 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 31,270 psi | 71% | 1962 fps | 95.2% |
| Alliant Reloder-15 | <<locked>> | 88% | 36,347 psi | 82% | 2054 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 35,578 psi | 80% | 2096 fps | 95.4% |
| Bofors RP3 | <<locked>> | 86% | 30,255 psi | 68% | 1959 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 36,274 psi | 82% | 1969 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,299 psi | 71% | 1972 fps | 96.3% |
| Hodgdon CFE223 | <<locked>> | 82% | 37,159 psi | 84% | 2106 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 35,607 psi | 80% | 2008 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 80% | 32,097 psi | 73% | 1955 fps | 95% |
| Hodgdon LEVERevolution | 38 gr | 86% | 32,547 psi | 74% | 2008 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,106 psi | 57% | 1168 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 32,851 psi | 74% | 1955 fps | 95.1% |
| IMR 3031 | 32.4 gr | 80% | 28,297 psi | 64% | 1916 fps | 98.8% |
| IMR 4064 | <<locked>> | 90% | 36,201 psi | 82% | 2008 fps | 95.1% |
| IMR 4895 | <<locked>> | 86% | 34,766 psi | 79% | 2037 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 33,852 psi | 77% | 1962 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 80% | 37,318 psi | 84% | 2031 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 29,602 psi | 67% | 1932 fps | 97% |
| Lovex S060 | <<locked>> | 82% | 35,433 psi | 80% | 1949 fps | 95.4% |
| Lovex S062 | <<locked>> | 82% | 29,834 psi | 67% | 1903 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 31,531 psi | 71% | 1919 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 31,285 psi | 71% | 1936 fps | 98.1% |
| Norma 203B | <<locked>> | 88% | 35,636 psi | 81% | 2047 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 88% | 35,520 psi | 80% | 2054 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 82% | 34,664 psi | 78% | 2011 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 36,999 psi | 84% | 2001 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,106 psi | 57% | 1194 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 37,434 psi | 85% | 2126 fps | 95.4% |
| ReloadSwiss RS 60 | 39.1 gr | 86% | 29,646 psi | 67% | 1972 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 34,925 psi | 79% | 1965 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 29,979 psi | 68% | 1880 fps | 95% |
| Rottweil R 903 | <<locked>> | 90% | 32,285 psi | 73% | 1995 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,602 psi | 67% | 1932 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 29,834 psi | 67% | 1903 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 36,651 psi | 83% | 2080 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 34,911 psi | 79% | 2008 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,518 psi | 76% | 1903 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,122 psi | 61% | 1798 fps | 97.7% |
| Somchem S321 | <<locked>> | 80% | 35,897 psi | 81% | 2024 fps | 97.4% |
| Somchem S335 | <<locked>> | 80% | 32,750 psi | 74% | 1909 fps | 99% |
| Somchem S341 | <<locked>> | 84% | 35,621 psi | 81% | 2014 fps | 95.3% |
| Somchem S355 | <<locked>> | 90% | 33,823 psi | 76% | 2005 fps | 95.6% |
| Somchem S365 | <<locked>> | 98% | 31,096 psi | 70% | 2014 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 33,417 psi | 76% | 1913 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 28,398 psi | 64% | 1886 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 29,573 psi | 67% | 1886 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 28,442 psi | 64% | 1880 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 33,605 psi | 76% | 1959 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 80% | 28,282 psi | 64% | 1873 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 35,955 psi | 81% | 2018 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 34,795 psi | 79% | 2034 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,724 psi | 83% | 2060 fps | 96.6% |
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 60 powders for .33 Win. loaded with the .338 | 250gr | Hornady SP. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,172 fps; across all powders the maximum-charge window runs from 1,309 fps to 2,172 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 60 of the 60 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 75–90 %, 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, IMR 3031, Hodgdon LEVERevolution rank at the top here: for .33 Win. with the .338 | 250gr | Hornady SP 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.