Load Specifications
Load data in caliber .33 Win. with .338 | 220gr | Reichenberg HDB Universal bullet and 46 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Winchester 748 and Alliant AR-Comp.
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>> | 88% | 38,290 psi | 87% | 2162 fps | 99.9% |
| Accurate 2460 | <<locked>> | 86% | 38,769 psi | 88% | 2195 fps | 98.3% |
| Accurate 2495 | <<locked>> | 96% | 37,840 psi | 86% | 2228 fps | 99.9% |
| Accurate 2520 | <<locked>> | 90% | 38,899 psi | 88% | 2238 fps | 98.1% |
| Accurate 4064 | <<locked>> | 98% | 37,637 psi | 85% | 2244 fps | 98.8% |
| ADI AR 2219 | <<locked>> | 82% | 38,696 psi | 87% | 2208 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 88% | 37,594 psi | 85% | 2169 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 92% | 39,972 psi | 90% | 2264 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 38,508 psi | 87% | 2238 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 39,073 psi | 88% | 2182 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 39,262 psi | 89% | 2126 fps | 99.5% |
| Bofors RP3ᴾ | <<locked>> | 100% | 39,987 psi | 90% | 2280 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 38,101 psi | 86% | 2136 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 92% | 39,581 psi | 89% | 2264 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 84% | 37,797 psi | 85% | 2192 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 84% | 38,145 psi | 86% | 2205 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,706 psi | 74% | 1388 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 38,145 psi | 86% | 2254 fps | 99.7% |
| IMR 4198 | <<locked>> | 82% | 38,464 psi | 87% | 2126 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 37,594 psi | 85% | 2169 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 86% | 38,754 psi | 88% | 2198 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 94% | 39,479 psi | 89% | 2257 fps | 98.2% |
| Lovex S062 | <<locked>> | 96% | 39,015 psi | 88% | 2215 fps | 96.4% |
| Norma 201 | <<locked>> | 92% | 38,986 psi | 88% | 2198 fps | 96.3% |
| Norma 202 | <<locked>> | 92% | 38,812 psi | 88% | 2218 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,692 psi | 74% | 1421 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 37,449 psi | 85% | 2165 fps | 97.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 39,784 psi | 90% | 2313 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 90% | 40,001 psi | 90% | 2201 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 94% | 38,957 psi | 88% | 2192 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 94% | 39,479 psi | 89% | 2257 fps | 98.2% |
| Shooters World Precision | <<locked>> | 96% | 39,015 psi | 88% | 2215 fps | 96.4% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 39,233 psi | 89% | 2215 fps | 98.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 39,697 psi | 90% | 2185 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 39,479 psi | 89% | 2142 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 37,971 psi | 86% | 2139 fps | 99% |
| Somchem S321 | <<locked>> | 86% | 37,492 psi | 85% | 2195 fps | 96.2% |
| Somchem S335 | <<locked>> | 90% | 38,058 psi | 86% | 2142 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 86% | 39,784 psi | 90% | 2146 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 39,131 psi | 88% | 2149 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 96% | 39,363 psi | 89% | 2231 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 39,247 psi | 89% | 2205 fps | 98.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 37,637 psi | 85% | 2188 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 88% | 37,420 psi | 85% | 2162 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 94% | 37,623 psi | 85% | 2195 fps | 98.2% |
| Winchester 748 | <<locked>> | 90% | 38,406 psi | 87% | 2238 fps | 97% |
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% | 29,646 psi | 67% | 2001 fps | 98.6% |
| Accurate 2460 | <<locked>> | 80% | 31,560 psi | 71% | 2064 fps | 96.4% |
| Accurate 2495 | <<locked>> | 80% | 21,756 psi | 49% | 1883 fps | 96.1% |
| Accurate 2520 | <<locked>> | 82% | 29,385 psi | 66% | 2054 fps | 95.2% |
| Accurate 4064 | <<locked>> | 86% | 25,483 psi | 58% | 1991 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 36,143 psi | 82% | 2162 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 35,447 psi | 80% | 2129 fps | 95% |
| Alliant AR-Comp | 33.3 gr | 80% | 27,296 psi | 62% | 2018 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 36,274 psi | 82% | 2198 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,243 psi | 77% | 2096 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,854 psi | 83% | 2087 fps | 99.1% |
| Bofors RP3 | <<locked>> | 98% | 37,536 psi | 85% | 2238 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 33,663 psi | 76% | 2051 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 88% | 34,577 psi | 78% | 2175 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 32,953 psi | 74% | 2100 fps | 98.1% |
| Hodgdon H335 | <<locked>> | 80% | 33,156 psi | 75% | 2110 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,062 psi | 54% | 1237 fps | 100% |
| IMR 3031 | 33.2 gr | 80% | 25,962 psi | 59% | 1991 fps | 96.4% |
| IMR 4198 | <<locked>> | 80% | 36,143 psi | 82% | 2087 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 35,447 psi | 80% | 2129 fps | 95% |
| Lovex D073.5 | <<locked>> | 82% | 33,547 psi | 76% | 2103 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 86% | 30,037 psi | 68% | 2080 fps | 95.4% |
| Lovex S062 | <<locked>> | 92% | 34,592 psi | 78% | 2133 fps | 95% |
| Norma 201 | <<locked>> | 90% | 36,448 psi | 82% | 2152 fps | 95.6% |
| Norma 202 | <<locked>> | 82% | 28,195 psi | 64% | 2005 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,902 psi | 54% | 1263 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 32,938 psi | 74% | 2080 fps | 95.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 34,954 psi | 79% | 2211 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 29,689 psi | 67% | 2001 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 92% | 36,695 psi | 83% | 2149 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 30,037 psi | 68% | 2080 fps | 95.4% |
| Shooters World Precision | <<locked>> | 92% | 34,592 psi | 78% | 2133 fps | 95% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 36,448 psi | 82% | 2162 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,998 psi | 79% | 2103 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 28,761 psi | 65% | 1939 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 26,237 psi | 59% | 1900 fps | 95.6% |
| Somchem S321 | <<locked>> | 84% | 34,838 psi | 79% | 2142 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 27,891 psi | 63% | 1942 fps | 96.2% |
| Vihtavuori N130 | <<locked>> | 80% | 32,909 psi | 74% | 2028 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 80% | 28,558 psi | 65% | 1952 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 80% | 23,627 psi | 53% | 1906 fps | 96.6% |
| Vihtavuori N140 | <<locked>> | 82% | 26,818 psi | 61% | 1955 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 98% | 35,404 psi | 80% | 2149 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 86% | 35,201 psi | 80% | 2123 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 86% | 29,124 psi | 66% | 2024 fps | 95.5% |
| Winchester 748 | 38.7 gr | 86% | 33,634 psi | 76% | 2146 fps | 95.5% |
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 46 powders for .33 Win. loaded with the .338 | 220gr | Reichenberg HDB Universal. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,313 fps; across all powders the maximum-charge window runs from 1,388 fps to 2,313 fps. Bofors RP3 gives the best case fill at 100 %, and 46 of the 46 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 220.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Bofors RP3, 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. IMR 3031, Winchester 748, Alliant AR-Comp rank at the top here: for .33 Win. with the .338 | 220gr | Reichenberg HDB Universal 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.