Load Specifications
Load data in caliber .33 Win. with .338 | 250gr | Remington PSP bullet and 50 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 SNPE Vectan SP 11.
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 2495 | <<locked>> | 84% | 37,840 psi | 86% | 2116 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 38,014 psi | 86% | 2149 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 38,145 psi | 86% | 2211 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 82% | 39,740 psi | 90% | 2159 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 86% | 38,406 psi | 87% | 2123 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,305 psi | 87% | 2221 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 39,610 psi | 90% | 2178 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 84% | 37,768 psi | 85% | 2146 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,566 psi | 89% | 2224 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 39,320 psi | 89% | 2254 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,653 psi | 87% | 2159 fps | 96.5% |
| Bofors RP3 | <<locked>> | 88% | 38,943 psi | 88% | 2182 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 39,784 psi | 90% | 2185 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 38,130 psi | 86% | 2172 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 38,130 psi | 86% | 2185 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,635 psi | 78% | 1381 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 38,653 psi | 87% | 2133 fps | 98.1% |
| IMR 3031 | <<locked>> | 82% | 38,928 psi | 88% | 2169 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 37,884 psi | 86% | 2106 fps | 97% |
| IMR 4831 | <<locked>> | 98% | 39,508 psi | 89% | 2218 fps | 96.8% |
| IMR 4895 | <<locked>> | 84% | 38,667 psi | 87% | 2172 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 82% | 38,058 psi | 86% | 2146 fps | 99.6% |
| Lovex S062 | <<locked>> | 86% | 39,871 psi | 90% | 2152 fps | 99% |
| Norma 201 | <<locked>> | 82% | 39,001 psi | 88% | 2123 fps | 98.8% |
| Norma 202 | <<locked>> | 82% | 38,957 psi | 88% | 2133 fps | 99.9% |
| Norma 203B | <<locked>> | 86% | 39,465 psi | 89% | 2178 fps | 97.9% |
| Norma URP | <<locked>> | 96% | 39,102 psi | 88% | 2215 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 86% | 39,146 psi | 88% | 2195 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,853 psi | 79% | 1414 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 39,088 psi | 88% | 2228 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 39,276 psi | 89% | 2260 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 38,522 psi | 87% | 2231 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 84% | 39,450 psi | 89% | 2126 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 90% | 39,117 psi | 88% | 2178 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 38,058 psi | 86% | 2146 fps | 99.6% |
| Shooters World Precision | <<locked>> | 86% | 39,871 psi | 90% | 2152 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 38,087 psi | 86% | 2178 fps | 97.4% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 39,537 psi | 89% | 2142 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 38,348 psi | 87% | 2136 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 37,956 psi | 86% | 2060 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 39,363 psi | 89% | 2149 fps | 97.7% |
| Somchem S355 | <<locked>> | 88% | 37,840 psi | 86% | 2142 fps | 98% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,436 psi | 89% | 2260 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 84% | 38,290 psi | 87% | 2113 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 39,407 psi | 89% | 2123 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 38,493 psi | 87% | 2133 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 94% | 38,624 psi | 87% | 2172 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 84% | 37,840 psi | 86% | 2116 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 39,305 psi | 89% | 2159 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 84% | 39,798 psi | 90% | 2182 fps | 98.5% |
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 2495 | <<locked>> | 80% | 33,185 psi | 75% | 2037 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 31,401 psi | 71% | 2024 fps | 99.3% |
| Accurate 4350 | <<locked>> | 94% | 35,650 psi | 81% | 2165 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 37,391 psi | 85% | 2116 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 82% | 33,939 psi | 77% | 2037 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 35,839 psi | 81% | 2169 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,719 psi | 69% | 2008 fps | 96.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,344 psi | 75% | 2060 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,070 psi | 79% | 2136 fps | 95% |
| Alliant Reloder-17 | 45.8 gr | 86% | 32,401 psi | 73% | 2110 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,158 psi | 82% | 2113 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 29,936 psi | 68% | 2005 fps | 96.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,347 psi | 84% | 2142 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 29,994 psi | 68% | 2005 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,533 psi | 76% | 2096 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,773 psi | 58% | 1234 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,332 psi | 82% | 2090 fps | 97.5% |
| IMR 3031 | <<locked>> | 80% | 36,419 psi | 82% | 2129 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,402 psi | 76% | 2021 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 34,853 psi | 79% | 2129 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 34,069 psi | 77% | 2083 fps | 96.5% |
| Lovex D073.6 | <<locked>> | 80% | 35,462 psi | 80% | 2100 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 33,098 psi | 75% | 2028 fps | 97.5% |
| Norma 201 | <<locked>> | 80% | 36,666 psi | 83% | 2080 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 36,550 psi | 83% | 2093 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 32,721 psi | 74% | 2051 fps | 96% |
| Norma URP | <<locked>> | 94% | 36,724 psi | 83% | 2172 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 32,271 psi | 73% | 2057 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,831 psi | 58% | 1260 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,156 psi | 77% | 2133 fps | 95.8% |
| ReloadSwiss RS 60 | 42.6 gr | 80% | 28,543 psi | 65% | 2021 fps | 96.8% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 35,984 psi | 81% | 2182 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 34,838 psi | 79% | 2041 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 80% | 28,355 psi | 64% | 1962 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,462 psi | 80% | 2100 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 33,098 psi | 75% | 2028 fps | 97.5% |
| SNPE Vectan SP 11 | 43 gr | 82% | 31,575 psi | 71% | 2047 fps | 95.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,144 psi | 84% | 2100 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,853 psi | 81% | 2090 fps | 96.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,473 psi | 71% | 1946 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 36,782 psi | 83% | 2103 fps | 97.1% |
| Somchem S355 | <<locked>> | 80% | 29,457 psi | 67% | 1972 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 27,209 psi | 62% | 1991 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 33,750 psi | 76% | 2037 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,751 psi | 79% | 2044 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 27,978 psi | 63% | 1926 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 92% | 36,303 psi | 82% | 2129 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 33,257 psi | 75% | 2034 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,603 psi | 69% | 1985 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,925 psi | 79% | 2093 fps | 97.3% |
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 50 powders for .33 Win. loaded with the .338 | 250gr | Remington PSP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,260 fps; across all powders the maximum-charge window runs from 1,381 fps to 2,260 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 78–90 %, leaving at least 10 % headroom. 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, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for .33 Win. with the .338 | 250gr | Remington PSP 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.