Load Specifications
Load data in caliber .350 Legend with .356 | 125gr | SNS Coated Bullets RN bullet and 9 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, Lovex S040 and ADI AR 2205.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | <<locked>> | 96% | 47,834 psi | 87% | 2559 fps | 96% |
| ADI APS 450 | <<locked>> | 82% | 49,603 psi | 90% | 1959 fps | 100% |
| ADI AR 2205 | <<locked>> | 98% | 47,529 psi | 86% | 2480 fps | 97.8% |
| Hodgdon LilGun | <<locked>> | 94% | 49,458 psi | 90% | 2684 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 24,743 psi | 45% | 1555 fps | 100% |
| Lovex S040 | <<locked>> | 92% | 49,124 psi | 89% | 2539 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,772 psi | 43% | 1588 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 33,460 psi | 61% | 2283 fps | 99.8% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 42,815 psi | 78% | 2500 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | <<locked>> | 94% | 44,469 psi | 81% | 2507 fps | 95.2% |
| ADI APS 450 | <<locked>> | 80% | 47,848 psi | 87% | 1936 fps | 100% |
| ADI AR 2205 | 26.3 gr | 90% | 37,608 psi | 68% | 2320 fps | 95.5% |
| Hodgdon LilGun | 25.5 gr | 80% | 30,095 psi | 55% | 2359 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,811 psi | 32% | 1388 fps | 100% |
| Lovex S040 | 21.9 gr | 80% | 34,389 psi | 63% | 2293 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,998 psi | 31% | 1411 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 19,870 psi | 36% | 1936 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 23,946 psi | 44% | 2110 fps | 95.9% |
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 17 powders for .350 Legend loaded with the .356 | 125gr | SNS Coated Bullets RN. Hodgdon LilGun delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,555 fps to 2,684 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 17 of the 17 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (379 MPa), the top charges use 43–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, IMR 4227, Lovex S053 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. Hodgdon LilGun, Lovex S040, ADI AR 2205 rank at the top here: for .350 Legend with the .356 | 125gr | SNS Coated Bullets RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 5744, IMR 4227, Lovex D060 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.