Load Specifications
Load data in caliber .338 Marlin Express with .338 | 200gr | Reichenberg HDB Universal bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Accurate 2520 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>> | 92% | 41,046 psi | 88% | 2333 fps | 99.8% |
| Accurate 2460 | <<locked>> | 90% | 41,756 psi | 90% | 2369 fps | 98.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,190 psi | 87% | 2392 fps | 99.9% |
| Accurate 2520 | <<locked>> | 94% | 39,943 psi | 86% | 2392 fps | 97.5% |
| Accurate 2520 | <<locked>> | 94% | 39,943 psi | 86% | 2392 fps | 97.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 37,434 psi | 81% | 2365 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 84% | 41,829 psi | 90% | 2264 fps | 99.2% |
| Accurate LT-32 | <<locked>> | 82% | 39,914 psi | 86% | 2231 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 82% | 41,379 psi | 89% | 2303 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 41,858 psi | 90% | 2385 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 94% | 40,437 psi | 87% | 2402 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 41,901 psi | 90% | 2356 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 39,958 psi | 86% | 2257 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 90% | 40,828 psi | 88% | 2300 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 94% | 39,842 psi | 86% | 2392 fps | 96.2% |
| Hodgdon H322 | <<locked>> | 88% | 40,669 psi | 88% | 2365 fps | 99% |
| Hodgdon H335 | <<locked>> | 88% | 41,205 psi | 89% | 2382 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,184 psi | 69% | 1463 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 40,901 psi | 88% | 2428 fps | 99.6% |
| IMR 4198 | <<locked>> | 86% | 41,437 psi | 89% | 2300 fps | 100% |
| Lovex D073.4 | <<locked>> | 82% | 39,450 psi | 85% | 2329 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 90% | 41,930 psi | 90% | 2372 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 96% | 39,653 psi | 85% | 2385 fps | 97.4% |
| Lovex S062ᴾ | <<locked>> | 100% | 41,887 psi | 90% | 2385 fps | 96.1% |
| Norma 200 | <<locked>> | 84% | 41,626 psi | 90% | 2333 fps | 100% |
| Norma 201 | <<locked>> | 96% | 41,742 psi | 90% | 2369 fps | 96.1% |
| Norma 202 | <<locked>> | 96% | 41,539 psi | 90% | 2388 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,082 psi | 69% | 1499 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 40,393 psi | 87% | 2339 fps | 97.1% |
| Rottweil R 901 | <<locked>> | 92% | 40,335 psi | 87% | 2333 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 98% | 41,742 psi | 90% | 2359 fps | 96% |
| Shooters World AR Plus | <<locked>> | 82% | 39,450 psi | 85% | 2329 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 96% | 39,653 psi | 85% | 2385 fps | 97.4% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 41,887 psi | 90% | 2385 fps | 96.1% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 39,494 psi | 85% | 2343 fps | 97.9% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 40,147 psi | 87% | 2320 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 39,755 psi | 86% | 2267 fps | 97.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 40,915 psi | 88% | 2303 fps | 98.9% |
| Somchem S321 | <<locked>> | 90% | 40,553 psi | 87% | 2369 fps | 96% |
| Somchem S335 | <<locked>> | 94% | 40,872 psi | 88% | 2310 fps | 98.8% |
| Vihtavuori N120 | <<locked>> | 82% | 41,524 psi | 89% | 2264 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 40,205 psi | 87% | 2277 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 94% | 41,989 psi | 90% | 2320 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 98% | 39,305 psi | 85% | 2359 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 98% | 41,901 psi | 90% | 2369 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 98% | 40,277 psi | 87% | 2359 fps | 97.9% |
| Winchester 748 | <<locked>> | 94% | 41,481 psi | 89% | 2415 fps | 96.9% |
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% | 27,934 psi | 60% | 2077 fps | 97.3% |
| Accurate 2460 | <<locked>> | 82% | 31,720 psi | 68% | 2178 fps | 95.5% |
| Accurate 2495 | <<locked>> | 84% | 23,206 psi | 50% | 2034 fps | 95.8% |
| Accurate 2520 | 41.1 gr | 88% | 32,271 psi | 70% | 2244 fps | 95.2% |
| Accurate 2520 | 41.1 gr | 88% | 32,271 psi | 70% | 2244 fps | 95.2% |
| Accurate 4064 | <<locked>> | 92% | 28,863 psi | 62% | 2188 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 36,999 psi | 80% | 2178 fps | 98.3% |
| Accurate LT-32 | <<locked>> | 80% | 37,376 psi | 81% | 2185 fps | 96.6% |
| ADI AR 2207 | <<locked>> | 80% | 38,914 psi | 84% | 2260 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 34,272 psi | 74% | 2244 fps | 97.6% |
| Alliant AR-Comp | 34.3 gr | 80% | 25,759 psi | 56% | 2090 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 32,401 psi | 70% | 2182 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 35,085 psi | 76% | 2169 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 88% | 38,624 psi | 83% | 2260 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 92% | 37,347 psi | 80% | 2346 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 31,372 psi | 68% | 2178 fps | 96.7% |
| Hodgdon H335 | <<locked>> | 80% | 31,546 psi | 68% | 2192 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,583 psi | 51% | 1306 fps | 100% |
| IMR 3031 | 35.1 gr | 82% | 26,223 psi | 56% | 2106 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 34,621 psi | 75% | 2182 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 80% | 36,869 psi | 79% | 2283 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 86% | 36,448 psi | 79% | 2277 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 90% | 32,271 psi | 70% | 2244 fps | 95.2% |
| Lovex S062 | <<locked>> | 98% | 39,175 psi | 84% | 2339 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 36,680 psi | 79% | 2251 fps | 100% |
| Norma 201 | <<locked>> | 94% | 39,102 psi | 84% | 2320 fps | 95.3% |
| Norma 202 | <<locked>> | 86% | 30,269 psi | 65% | 2165 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,627 psi | 51% | 1339 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 35,462 psi | 76% | 2247 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 84% | 31,589 psi | 68% | 2159 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 96% | 39,363 psi | 85% | 2316 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 36,869 psi | 79% | 2283 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 32,271 psi | 70% | 2244 fps | 95.2% |
| Shooters World Precision | <<locked>> | 98% | 39,175 psi | 84% | 2339 fps | 95.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 34,650 psi | 75% | 2247 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 33,185 psi | 72% | 2188 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 31,082 psi | 67% | 2100 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 28,340 psi | 61% | 2057 fps | 95.4% |
| Somchem S321 | <<locked>> | 88% | 37,739 psi | 81% | 2316 fps | 95.2% |
| Somchem S335 | <<locked>> | 82% | 28,152 psi | 61% | 2057 fps | 95.2% |
| Vihtavuori N120 | <<locked>> | 80% | 39,088 psi | 84% | 2224 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,285 psi | 67% | 2110 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 80% | 27,137 psi | 58% | 2028 fps | 96.7% |
| Vihtavuori N135 | <<locked>> | 82% | 23,699 psi | 51% | 2014 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 88% | 30,501 psi | 66% | 2149 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 90% | 31,169 psi | 67% | 2182 fps | 95.2% |
| Winchester 748 | <<locked>> | 90% | 36,230 psi | 78% | 2313 fps | 95.2% |
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 47 powders for .338 Marlin Express loaded with the .338 | 200gr | Reichenberg HDB Universal. IMR 3031 delivers the highest muzzle velocity at 2,428 fps; across all powders the maximum-charge window runs from 1,463 fps to 2,428 fps. Accurate 2495 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Hodgdon TrailBoss 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, Accurate 2520, Alliant AR-Comp rank at the top here: for .338 Marlin Express with the .338 | 200gr | 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.