Load Specifications
Load data in caliber .338 Marlin Express with .338 | 210gr | Nosler Partition bullet and 50 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 Hodgdon BL-C2.
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% | 40,161 psi | 87% | 2260 fps | 99.9% |
| Accurate 2460 | <<locked>> | 86% | 40,872 psi | 88% | 2300 fps | 98.6% |
| Accurate 2495 | <<locked>> | 96% | 40,205 psi | 87% | 2333 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 40,988 psi | 88% | 2343 fps | 98.4% |
| Accurate 4064 | <<locked>> | 98% | 40,059 psi | 86% | 2352 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 40,219 psi | 87% | 2306 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 90% | 41,930 psi | 90% | 2316 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 90% | 39,363 psi | 85% | 2326 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 40,582 psi | 87% | 2346 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 84% | 40,843 psi | 88% | 2280 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 40,930 psi | 88% | 2224 fps | 99.6% |
| Bofors RP3 | <<locked>> | 98% | 39,726 psi | 86% | 2346 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 41,930 psi | 90% | 2274 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 92% | 41,626 psi | 90% | 2372 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 86% | 41,974 psi | 90% | 2333 fps | 99.5% |
| Hodgdon H335 | <<locked>> | 84% | 39,697 psi | 86% | 2303 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 40,190 psi | 87% | 2359 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,069 psi | 71% | 1444 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 40,089 psi | 86% | 2359 fps | 99.8% |
| IMR 4198 | <<locked>> | 82% | 39,914 psi | 86% | 2221 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 41,930 psi | 90% | 2316 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 86% | 40,756 psi | 88% | 2300 fps | 97.5% |
| Lovex D073.6 | <<locked>> | 94% | 41,771 psi | 90% | 2365 fps | 98.5% |
| Lovex S062 | <<locked>> | 96% | 41,031 psi | 88% | 2320 fps | 96.7% |
| Norma 201 | <<locked>> | 92% | 40,973 psi | 88% | 2303 fps | 96.7% |
| Norma 202 | <<locked>> | 92% | 40,698 psi | 88% | 2320 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,127 psi | 71% | 1480 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 41,713 psi | 90% | 2313 fps | 98.1% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,437 psi | 89% | 2418 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 88% | 40,001 psi | 86% | 2270 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 94% | 40,973 psi | 88% | 2293 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 94% | 41,771 psi | 90% | 2365 fps | 98.5% |
| Shooters World Precision | <<locked>> | 96% | 41,031 psi | 88% | 2320 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 41,698 psi | 90% | 2274 fps | 96.3% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 40,915 psi | 88% | 2313 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 41,597 psi | 90% | 2287 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 41,002 psi | 88% | 2238 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 39,653 psi | 85% | 2234 fps | 99.2% |
| Somchem S321 | <<locked>> | 88% | 41,989 psi | 90% | 2343 fps | 97.2% |
| Somchem S335 | <<locked>> | 90% | 40,045 psi | 86% | 2244 fps | 99.2% |
| Somchem S355ᴾ | <<locked>> | 100% | 40,973 psi | 88% | 2343 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 86% | 41,292 psi | 89% | 2238 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 40,582 psi | 87% | 2244 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 96% | 41,379 psi | 89% | 2333 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 40,872 psi | 88% | 2303 fps | 99% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 39,494 psi | 85% | 2290 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 90% | 41,843 psi | 90% | 2310 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 96% | 41,858 psi | 90% | 2336 fps | 98.8% |
| Winchester 748 | <<locked>> | 90% | 40,190 psi | 87% | 2343 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 94% | 41,959 psi | 90% | 2359 fps | 96% |
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% | 31,241 psi | 67% | 2096 fps | 98.8% |
| Accurate 2460 | <<locked>> | 80% | 33,373 psi | 72% | 2162 fps | 96.8% |
| Accurate 2495 | <<locked>> | 80% | 23,801 psi | 51% | 1991 fps | 96.9% |
| Accurate 2520 | <<locked>> | 82% | 31,241 psi | 67% | 2156 fps | 95.7% |
| Accurate 4064 | <<locked>> | 86% | 27,427 psi | 59% | 2093 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 37,739 psi | 81% | 2260 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 86% | 36,840 psi | 79% | 2221 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 28,631 psi | 62% | 2113 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 38,116 psi | 82% | 2303 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 36,143 psi | 78% | 2198 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,363 psi | 83% | 2182 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 37,202 psi | 80% | 2300 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,273 psi | 76% | 2149 fps | 95.5% |
| Hodgdon BL-C2 | 41.6 gr | 86% | 34,069 psi | 73% | 2231 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 34,635 psi | 75% | 2198 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 80% | 34,824 psi | 75% | 2211 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 37,623 psi | 81% | 2310 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,337 psi | 52% | 1286 fps | 100% |
| IMR 3031 | 35.1 gr | 80% | 27,470 psi | 59% | 2090 fps | 96.9% |
| IMR 4198 | <<locked>> | 80% | 37,652 psi | 81% | 2182 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 36,840 psi | 79% | 2221 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 80% | 33,272 psi | 72% | 2159 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 84% | 29,820 psi | 64% | 2136 fps | 95.1% |
| Lovex S062 | <<locked>> | 92% | 36,230 psi | 78% | 2231 fps | 95.4% |
| Norma 201 | <<locked>> | 88% | 36,187 psi | 78% | 2215 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 27,818 psi | 60% | 2057 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,482 psi | 53% | 1322 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,330 psi | 74% | 2172 fps | 96.2% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 34,374 psi | 74% | 2267 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 31,531 psi | 68% | 2100 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 90% | 36,448 psi | 79% | 2211 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 29,820 psi | 64% | 2136 fps | 95.1% |
| Shooters World Precision | <<locked>> | 92% | 36,230 psi | 78% | 2231 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 39,160 psi | 84% | 2231 fps | 95.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,218 psi | 82% | 2264 fps | 98.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,463 psi | 79% | 2198 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,197 psi | 65% | 2031 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,049 psi | 56% | 1952 fps | 95.3% |
| Somchem S321 | <<locked>> | 82% | 34,418 psi | 74% | 2201 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 29,486 psi | 64% | 2034 fps | 96.6% |
| Somchem S355 | <<locked>> | 98% | 38,493 psi | 83% | 2297 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 34,374 psi | 74% | 2119 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 29,921 psi | 64% | 2044 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 80% | 25,077 psi | 54% | 2001 fps | 97.1% |
| Vihtavuori N140 | <<locked>> | 82% | 28,137 psi | 61% | 2044 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 96% | 34,809 psi | 75% | 2205 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 86% | 36,840 psi | 79% | 2221 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 84% | 28,790 psi | 62% | 2077 fps | 95.1% |
| Winchester 748 | 39.9 gr | 84% | 32,996 psi | 71% | 2198 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 92% | 39,233 psi | 85% | 2310 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 50 powders for .338 Marlin Express loaded with the .338 | 210gr | Nosler Partition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,418 fps; across all powders the maximum-charge window runs from 1,444 fps to 2,418 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 (320 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 210.0 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, ReloadSwiss RS 60 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, Hodgdon BL-C2 rank at the top here: for .338 Marlin Express with the .338 | 210gr | Nosler Partition 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.