Load Specifications
Load data in caliber .338 Marlin Express with .338 | 190gr | Brenneke TAG bullet and 40 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, IMR 3031 and Accurate 2520.
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>> | 94% | 41,655 psi | 90% | 2405 fps | 99.6% |
| Accurate 2460 | <<locked>> | 90% | 39,784 psi | 86% | 2395 fps | 97.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,884 psi | 82% | 2418 fps | 99.5% |
| Accurate 2520 | <<locked>> | 94% | 39,813 psi | 86% | 2434 fps | 96.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 35,331 psi | 76% | 2385 fps | 97% |
| Accurate LT-30 | <<locked>> | 84% | 40,437 psi | 87% | 2300 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 84% | 40,886 psi | 88% | 2303 fps | 96.9% |
| ADI AR 2207 | <<locked>> | 82% | 39,726 psi | 86% | 2343 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 40,118 psi | 86% | 2415 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 96% | 40,973 psi | 88% | 2474 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 88% | 40,161 psi | 87% | 2392 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 82% | 41,162 psi | 89% | 2346 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,133 psi | 89% | 2336 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 92% | 41,872 psi | 90% | 2375 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 90% | 41,640 psi | 90% | 2441 fps | 98.7% |
| Hodgdon H335 | <<locked>> | 88% | 39,392 psi | 85% | 2408 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,068 psi | 69% | 1503 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 41,466 psi | 89% | 2500 fps | 99.3% |
| IMR 4198 | <<locked>> | 86% | 39,668 psi | 85% | 2336 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 40,596 psi | 87% | 2411 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 90% | 39,943 psi | 86% | 2395 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 98% | 40,263 psi | 87% | 2457 fps | 97% |
| Norma 200 | <<locked>> | 84% | 39,885 psi | 86% | 2372 fps | 100% |
| Norma 202 | <<locked>> | 96% | 39,624 psi | 85% | 2415 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,604 psi | 68% | 1535 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 41,307 psi | 89% | 2415 fps | 96.7% |
| Rottweil R 901 | <<locked>> | 94% | 40,886 psi | 88% | 2402 fps | 97.5% |
| Shooters World AR Plus | <<locked>> | 84% | 40,596 psi | 87% | 2411 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 98% | 40,263 psi | 87% | 2457 fps | 97% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 40,582 psi | 87% | 2421 fps | 97.5% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 40,872 psi | 88% | 2395 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 40,828 psi | 88% | 2343 fps | 97.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,247 psi | 85% | 2333 fps | 98.1% |
| Somchem S335 | <<locked>> | 96% | 41,727 psi | 90% | 2382 fps | 98.5% |
| Vihtavuori N120 | <<locked>> | 82% | 39,943 psi | 86% | 2303 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 40,944 psi | 88% | 2349 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 94% | 40,248 psi | 87% | 2352 fps | 99.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,016 psi | 86% | 2434 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 98% | 40,045 psi | 86% | 2398 fps | 97.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,307 psi | 89% | 2438 fps | 97.6% |
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% | 26,672 psi | 57% | 2100 fps | 96.2% |
| Accurate 2460 | <<locked>> | 84% | 32,300 psi | 70% | 2247 fps | 95% |
| Accurate 2495 | <<locked>> | 86% | 23,293 psi | 50% | 2093 fps | 95.2% |
| Accurate 2520 | 42.1 gr | 90% | 34,418 psi | 74% | 2333 fps | 95.2% |
| Accurate 4064 | <<locked>> | 96% | 30,995 psi | 67% | 2293 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 35,752 psi | 77% | 2211 fps | 97.5% |
| Accurate LT-32 | <<locked>> | 80% | 36,143 psi | 78% | 2215 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 37,376 psi | 81% | 2300 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,895 psi | 71% | 2270 fps | 96.5% |
| Alliant AR-Comp | 34.4 gr | 80% | 24,671 psi | 53% | 2110 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,067 psi | 67% | 2211 fps | 98.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,827 psi | 84% | 2306 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,765 psi | 73% | 2198 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 90% | 39,305 psi | 85% | 2329 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 30,110 psi | 65% | 2205 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 82% | 32,242 psi | 69% | 2260 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,511 psi | 51% | 1342 fps | 100% |
| IMR 3031 | 36.9 gr | 86% | 28,471 psi | 61% | 2218 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 33,141 psi | 71% | 2208 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 80% | 35,172 psi | 76% | 2306 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 88% | 37,101 psi | 80% | 2346 fps | 95% |
| Lovex D073.6 | <<locked>> | 94% | 35,085 psi | 76% | 2359 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 34,896 psi | 75% | 2277 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 32,735 psi | 71% | 2277 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,264 psi | 50% | 1371 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 36,245 psi | 78% | 2320 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 88% | 34,185 psi | 74% | 2270 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 35,172 psi | 76% | 2306 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 94% | 35,085 psi | 76% | 2359 fps | 95.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 32,953 psi | 71% | 2270 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,850 psi | 69% | 2215 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 33,620 psi | 72% | 2208 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 30,603 psi | 66% | 2159 fps | 95.6% |
| Somchem S335 | <<locked>> | 86% | 30,516 psi | 66% | 2165 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 37,594 psi | 81% | 2267 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,023 psi | 65% | 2139 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 80% | 26,078 psi | 56% | 2051 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 84% | 24,207 psi | 52% | 2080 fps | 95% |
| Vihtavuori N140 | <<locked>> | 90% | 31,140 psi | 67% | 2218 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 94% | 33,837 psi | 73% | 2293 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 40 powders for .338 Marlin Express loaded with the .338 | 190gr | Brenneke TAG. IMR 3031 delivers the highest muzzle velocity at 2,500 fps; across all powders the maximum-charge window runs from 1,503 fps to 2,500 fps. Accurate 2495 gives the best case fill at 100 %, and 40 of the 40 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 190.0 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. Alliant AR-Comp, IMR 3031, Accurate 2520 rank at the top here: for .338 Marlin Express with the .338 | 190gr | Brenneke TAG 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.