Load Specifications
Load data in caliber .33 Win. with .338 | 225gr | Hornady InterLock bullet and 49 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 IMR 3031.
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>> | 86% | 39,204 psi | 89% | 2175 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 39,697 psi | 90% | 2211 fps | 99% |
| Accurate 2495 | <<locked>> | 94% | 39,291 psi | 89% | 2244 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 38,305 psi | 87% | 2238 fps | 98.5% |
| Accurate 4064 | <<locked>> | 96% | 39,305 psi | 89% | 2267 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 86% | 38,377 psi | 87% | 2188 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 88% | 38,682 psi | 87% | 2238 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 38,189 psi | 86% | 2251 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 39,624 psi | 90% | 2260 fps | 96.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 39,595 psi | 90% | 2185 fps | 100% |
| Bofors RP3 | <<locked>> | 96% | 38,812 psi | 88% | 2264 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 84% | 38,580 psi | 87% | 2149 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 88% | 37,985 psi | 86% | 2238 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 84% | 37,753 psi | 85% | 2192 fps | 99.5% |
| Hodgdon H4895 | <<locked>> | 88% | 38,580 psi | 87% | 2221 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 39,233 psi | 89% | 2277 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,214 psi | 75% | 1401 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 39,015 psi | 88% | 2211 fps | 96.1% |
| IMR 3031 | <<locked>> | 92% | 38,014 psi | 86% | 2251 fps | 99.9% |
| IMR 4895 | <<locked>> | 92% | 39,160 psi | 89% | 2260 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 86% | 38,377 psi | 87% | 2188 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 84% | 39,262 psi | 89% | 2208 fps | 98% |
| Lovex D073.6 | <<locked>> | 90% | 38,000 psi | 86% | 2231 fps | 98.5% |
| Lovex S062 | <<locked>> | 92% | 37,797 psi | 85% | 2195 fps | 96.8% |
| Norma 201 | <<locked>> | 90% | 39,755 psi | 90% | 2215 fps | 97.3% |
| Norma 202 | <<locked>> | 90% | 39,697 psi | 90% | 2231 fps | 99.2% |
| Norma 203B | <<locked>> | 94% | 39,929 psi | 90% | 2267 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,228 psi | 75% | 1434 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 38,072 psi | 86% | 2178 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 37,942 psi | 86% | 2290 fps | 97.8% |
| Rottweil R 901 | <<locked>> | 86% | 38,551 psi | 87% | 2178 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 92% | 40,016 psi | 90% | 2211 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 98% | 38,711 psi | 88% | 2254 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 90% | 38,000 psi | 86% | 2231 fps | 98.5% |
| Shooters World Precision | <<locked>> | 92% | 37,797 psi | 85% | 2195 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 40,016 psi | 90% | 2156 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 38,885 psi | 88% | 2152 fps | 99.6% |
| Somchem S321 | <<locked>> | 84% | 38,174 psi | 86% | 2208 fps | 97.1% |
| Somchem S335 | <<locked>> | 88% | 38,870 psi | 88% | 2156 fps | 99.5% |
| Somchem S355 | <<locked>> | 96% | 37,811 psi | 85% | 2218 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 82% | 37,797 psi | 85% | 2113 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 39,784 psi | 90% | 2159 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 38,145 psi | 86% | 2208 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 39,929 psi | 90% | 2218 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 98% | 38,754 psi | 88% | 2215 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 86% | 38,159 psi | 86% | 2182 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 92% | 38,421 psi | 87% | 2208 fps | 98.9% |
| Winchester 748 | <<locked>> | 86% | 39,740 psi | 90% | 2267 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 84% | 39,624 psi | 90% | 2254 fps | 96.4% |
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% | 32,169 psi | 73% | 2051 fps | 99.5% |
| Accurate 2460 | <<locked>> | 80% | 34,664 psi | 78% | 2123 fps | 98% |
| Accurate 2495 | <<locked>> | 80% | 24,323 psi | 55% | 1946 fps | 97.9% |
| Accurate 2520 | <<locked>> | 80% | 28,718 psi | 65% | 2047 fps | 95.7% |
| Accurate 4064 | <<locked>> | 82% | 24,729 psi | 56% | 1965 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 33,605 psi | 76% | 2093 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 29,573 psi | 67% | 2070 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 35,723 psi | 81% | 2201 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 34,911 psi | 79% | 2175 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,347 psi | 84% | 2149 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 33,953 psi | 77% | 2172 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 34,113 psi | 77% | 2064 fps | 96.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 30,922 psi | 70% | 2096 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 33,330 psi | 75% | 2106 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 86% | 36,230 psi | 82% | 2178 fps | 95.5% |
| Hodgdon LEVERevolution | 42 gr | 90% | 34,505 psi | 78% | 2182 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,424 psi | 55% | 1247 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 36,956 psi | 84% | 2172 fps | 95.5% |
| IMR 3031 | 34.1 gr | 80% | 25,918 psi | 59% | 1991 fps | 97.2% |
| IMR 4895 | <<locked>> | 90% | 36,724 psi | 83% | 2215 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 82% | 33,605 psi | 76% | 2093 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 80% | 34,316 psi | 78% | 2119 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 82% | 28,921 psi | 65% | 2054 fps | 95.8% |
| Lovex S062 | <<locked>> | 88% | 33,272 psi | 75% | 2110 fps | 95.4% |
| Norma 201 | <<locked>> | 84% | 32,851 psi | 74% | 2083 fps | 95.2% |
| Norma 202 | <<locked>> | 80% | 28,718 psi | 65% | 2018 fps | 96.4% |
| Norma 203B | <<locked>> | 92% | 37,478 psi | 85% | 2221 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,308 psi | 55% | 1276 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,491 psi | 80% | 2133 fps | 97.5% |
| ReloadSwiss RS 60 | 44.1 gr | 92% | 33,359 psi | 75% | 2192 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 32,126 psi | 73% | 2054 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 86% | 33,315 psi | 75% | 2087 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 96% | 36,230 psi | 82% | 2208 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 28,921 psi | 65% | 2054 fps | 95.8% |
| Shooters World Precision | <<locked>> | 88% | 33,272 psi | 75% | 2110 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,009 psi | 70% | 1988 fps | 97.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 25,034 psi | 57% | 1873 fps | 95.9% |
| Somchem S321 | <<locked>> | 80% | 33,199 psi | 75% | 2113 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 30,240 psi | 68% | 1991 fps | 97.7% |
| Somchem S355 | <<locked>> | 94% | 35,462 psi | 80% | 2175 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 35,418 psi | 80% | 2070 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 30,879 psi | 70% | 2001 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 25,802 psi | 58% | 1962 fps | 98.2% |
| Vihtavuori N140 | <<locked>> | 80% | 27,180 psi | 61% | 1965 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 92% | 31,720 psi | 72% | 2080 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 82% | 33,301 psi | 75% | 2087 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 82% | 27,862 psi | 63% | 1995 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 32,256 psi | 73% | 2123 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 36,709 psi | 83% | 2198 fps | 95.6% |
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 49 powders for .33 Win. loaded with the .338 | 225gr | Hornady InterLock. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,290 fps; across all powders the maximum-charge window runs from 1,401 fps to 2,290 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 49 of the 49 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 225.0 gr projectile in 0.338" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14 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, IMR 3031 rank at the top here: for .33 Win. with the .338 | 225gr | Hornady InterLock 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.