Load Specifications
Load data in caliber .350 Legend with .355 | 170gr | Barnes TSX BT 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, Accurate No. 11 FS and Lovex S040.
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% | 48,022 psi | 87% | 2110 fps | 97.4% |
| ADI AR 2205 | <<locked>> | 98% | 48,341 psi | 88% | 2047 fps | 98.9% |
| Hodgdon LilGun | <<locked>> | 92% | 47,123 psi | 86% | 2178 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,179 psi | 46% | 1240 fps | 100% |
| Lovex S040 | <<locked>> | 90% | 46,789 psi | 85% | 2041 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 36,419 psi | 66% | 1975 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,004 psi | 44% | 1263 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 34,214 psi | 62% | 1877 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 43,932 psi | 80% | 2057 fps | 100% |
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 | 22.5 gr | 90% | 39,465 psi | 72% | 1998 fps | 95.6% |
| ADI AR 2205 | <<locked>> | 84% | 32,097 psi | 58% | 1811 fps | 95.4% |
| Hodgdon LilGun | 20.2 gr | 80% | 31,169 psi | 57% | 1955 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 17,999 psi | 33% | 1102 fps | 100% |
| Lovex S040 | 17.3 gr | 80% | 35,201 psi | 64% | 1883 fps | 99.5% |
| Lovex S053 | <<locked>> | 94% | 30,835 psi | 56% | 1877 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,680 psi | 32% | 1132 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 20,276 psi | 37% | 1594 fps | 97.7% |
| Vihtavuori N110 | <<locked>> | 80% | 24,482 psi | 45% | 1736 fps | 97.9% |
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 9 powders for .350 Legend loaded with the .355 | 170gr | Barnes TSX BT. Hodgdon LilGun delivers the highest muzzle velocity at 2,178 fps; across all powders the maximum-charge window runs from 1,240 fps to 2,178 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 9 of the 9 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (379 MPa), the top charges use 44–88 %, leaving at least 12 % headroom. Hodgdon TrailBoss, Lovex S053, ReloadSwiss RS 14 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, Accurate No. 11 FS, Lovex S040 rank at the top here: for .350 Legend with the .355 | 170gr | Barnes TSX BT they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.