Load Specifications
Load data in caliber .338 Marlin Express with .338 | 200gr | Woodleigh FN SN 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 BL-C2 and Lovex D073.6.
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% | 41,510 psi | 89% | 2372 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 39,639 psi | 85% | 2369 fps | 98.4% |
| Accurate 2495 | <<locked>> | 94% | 39,334 psi | 85% | 2405 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 39,711 psi | 86% | 2408 fps | 98.1% |
| Accurate 4064 | <<locked>> | 98% | 41,771 psi | 90% | 2467 fps | 99.3% |
| ADI AR 2219 | <<locked>> | 82% | 41,742 psi | 90% | 2421 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 40,567 psi | 87% | 2382 fps | 96.4% |
| Alliant AR-Comp | <<locked>> | 90% | 40,785 psi | 88% | 2438 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 41,989 psi | 90% | 2461 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 41,989 psi | 90% | 2388 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 41,989 psi | 90% | 2329 fps | 99.7% |
| Bofors RP3 | <<locked>> | 98% | 41,336 psi | 89% | 2464 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 40,843 psi | 88% | 2343 fps | 97.1% |
| Hodgdon BL-C2 | <<locked>> | 90% | 40,335 psi | 87% | 2438 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 84% | 40,625 psi | 88% | 2402 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 84% | 41,060 psi | 88% | 2415 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 90% | 40,944 psi | 88% | 2421 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 41,640 psi | 90% | 2477 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,359 psi | 72% | 1519 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 41,365 psi | 89% | 2474 fps | 99.9% |
| IMR 4198 | <<locked>> | 82% | 40,915 psi | 88% | 2326 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 40,567 psi | 87% | 2382 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 84% | 39,349 psi | 85% | 2362 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 92% | 40,596 psi | 87% | 2434 fps | 98.3% |
| Lovex S062 | <<locked>> | 94% | 40,074 psi | 86% | 2392 fps | 96.5% |
| Norma 201 | <<locked>> | 90% | 39,740 psi | 86% | 2369 fps | 96.4% |
| Norma 202 | <<locked>> | 90% | 39,421 psi | 85% | 2385 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,359 psi | 72% | 1552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 40,306 psi | 87% | 2375 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 40,234 psi | 87% | 2487 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 88% | 41,060 psi | 88% | 2375 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 92% | 39,914 psi | 86% | 2365 fps | 96.4% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 41,002 psi | 88% | 2448 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 92% | 40,596 psi | 87% | 2434 fps | 98.3% |
| Shooters World Precision | <<locked>> | 94% | 40,074 psi | 86% | 2392 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 40,321 psi | 87% | 2339 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 40,219 psi | 87% | 2356 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 39,726 psi | 86% | 2303 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 40,944 psi | 88% | 2343 fps | 99.4% |
| Somchem S321 | <<locked>> | 86% | 40,567 psi | 87% | 2408 fps | 96.8% |
| Somchem S335 | <<locked>> | 90% | 41,191 psi | 89% | 2352 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 84% | 40,074 psi | 86% | 2306 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 39,392 psi | 85% | 2310 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 94% | 40,350 psi | 87% | 2405 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 39,682 psi | 86% | 2369 fps | 98.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 40,930 psi | 88% | 2405 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 88% | 40,669 psi | 88% | 2379 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 94% | 40,756 psi | 88% | 2405 fps | 98.6% |
| Winchester 748 | <<locked>> | 90% | 41,423 psi | 89% | 2457 fps | 97.7% |
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% | 32,430 psi | 70% | 2201 fps | 99% |
| Accurate 2460 | <<locked>> | 80% | 34,577 psi | 75% | 2270 fps | 97.2% |
| Accurate 2495 | <<locked>> | 80% | 24,801 psi | 53% | 2090 fps | 97.2% |
| Accurate 2520 | <<locked>> | 80% | 30,182 psi | 65% | 2211 fps | 95.2% |
| Accurate 4064 | <<locked>> | 84% | 26,774 psi | 58% | 2149 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 38,783 psi | 84% | 2369 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 38,087 psi | 82% | 2333 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 29,617 psi | 64% | 2218 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 37,130 psi | 80% | 2369 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 37,246 psi | 80% | 2306 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 39,262 psi | 85% | 2283 fps | 99.4% |
| Bofors RP3 | <<locked>> | 94% | 36,129 psi | 78% | 2365 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 34,055 psi | 73% | 2208 fps | 95.1% |
| Hodgdon BL-C2 | 44.7 gr | 86% | 35,215 psi | 76% | 2336 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 35,592 psi | 77% | 2306 fps | 98.5% |
| Hodgdon H335 | <<locked>> | 80% | 36,085 psi | 78% | 2320 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 88% | 38,377 psi | 83% | 2372 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 38,856 psi | 84% | 2425 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,656 psi | 53% | 1355 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 28,427 psi | 61% | 2195 fps | 97.2% |
| IMR 4198 | <<locked>> | 80% | 38,479 psi | 83% | 2283 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 38,087 psi | 82% | 2333 fps | 95.7% |
| Lovex D073.5 | <<locked>> | 80% | 34,345 psi | 74% | 2264 fps | 95.7% |
| Lovex D073.6 | 42.3 gr | 84% | 31,009 psi | 67% | 2244 fps | 95.5% |
| Lovex S062 | <<locked>> | 90% | 35,476 psi | 76% | 2300 fps | 95.1% |
| Norma 201 | <<locked>> | 88% | 37,275 psi | 80% | 2323 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 28,732 psi | 62% | 2156 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,526 psi | 53% | 1385 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 35,375 psi | 76% | 2280 fps | 96.5% |
| ReloadSwiss RS 60 | 48.2 gr | 94% | 35,505 psi | 77% | 2382 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 32,445 psi | 70% | 2201 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 90% | 37,666 psi | 81% | 2323 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 98% | 38,305 psi | 83% | 2398 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 31,009 psi | 67% | 2244 fps | 95.5% |
| Shooters World Precision | <<locked>> | 90% | 35,476 psi | 76% | 2300 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 37,536 psi | 81% | 2287 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 37,840 psi | 82% | 2313 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 31,256 psi | 67% | 2136 fps | 96.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,847 psi | 58% | 2051 fps | 95.6% |
| Somchem S321 | <<locked>> | 82% | 35,534 psi | 77% | 2306 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 30,414 psi | 66% | 2136 fps | 96.9% |
| Vihtavuori N130 | <<locked>> | 80% | 35,621 psi | 77% | 2228 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 31,053 psi | 67% | 2149 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 80% | 26,092 psi | 56% | 2103 fps | 97.4% |
| Vihtavuori N140 | <<locked>> | 80% | 27,412 psi | 59% | 2103 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 94% | 33,837 psi | 73% | 2267 fps | 95% |
| Vihtavuori N530 | <<locked>> | 84% | 35,621 psi | 77% | 2283 fps | 95% |
| Vihtavuori N540 | <<locked>> | 84% | 29,646 psi | 64% | 2175 fps | 95.4% |
| Winchester 748 | <<locked>> | 84% | 34,011 psi | 73% | 2306 fps | 95.4% |
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 .338 Marlin Express loaded with the .338 | 200gr | Woodleigh FN SN. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,487 fps; across all powders the maximum-charge window runs from 1,519 fps to 2,487 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 (320 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.338" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Rottweil R 903 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 BL-C2, Lovex D073.6 rank at the top here: for .338 Marlin Express with the .338 | 200gr | Woodleigh FN SN 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.