Load Specifications
Load data in caliber .350 Legend with .357 | 158gr | Fiocchi SJSP bullet and 17 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate No. 11 FS, Vihtavuori N110 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 5744 | <<locked>> | 88% | 49,327 psi | 90% | 2339 fps | 95.7% |
| Accurate No. 11 FS | <<locked>> | 90% | 46,804 psi | 85% | 2293 fps | 98.4% |
| ADI AR 2205 | <<locked>> | 94% | 49,139 psi | 89% | 2251 fps | 99.7% |
| Hodgdon LilGun | <<locked>> | 88% | 49,603 psi | 90% | 2385 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,469 psi | 48% | 1388 fps | 100% |
| IMR 4227ᴾ | <<locked>> | 100% | 46,035 psi | 84% | 2280 fps | 96.8% |
| Lovex D060 | <<locked>> | 94% | 48,805 psi | 89% | 2329 fps | 95.6% |
| Lovex D063 | <<locked>> | 94% | 49,327 psi | 90% | 2306 fps | 96.3% |
| Lovex S040 | <<locked>> | 86% | 47,747 psi | 87% | 2241 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 43,366 psi | 79% | 2264 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,686 psi | 47% | 1417 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 43,990 psi | 80% | 2297 fps | 96.2% |
| Shooters World Buffalo Rifle | <<locked>> | 94% | 48,805 psi | 89% | 2329 fps | 95.6% |
| Shooters World SOCOM | <<locked>> | 94% | 49,327 psi | 90% | 2306 fps | 96.3% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 40,074 psi | 73% | 2126 fps | 100% |
| Vihtavuori N110 | <<locked>> | 98% | 48,501 psi | 88% | 2293 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 34,983 psi | 64% | 2169 fps | 96.7% |
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 5744 | <<locked>> | 86% | 46,427 psi | 84% | 2297 fps | 95% |
| Accurate No. 11 FS | 25 gr | 80% | 33,562 psi | 61% | 2077 fps | 95.1% |
| ADI AR 2205 | 23 gr | 80% | 32,140 psi | 58% | 1985 fps | 96.7% |
| Hodgdon LilGun | <<locked>> | 80% | 37,739 psi | 69% | 2228 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,348 psi | 35% | 1243 fps | 100% |
| IMR 4227 | <<locked>> | 96% | 40,915 psi | 74% | 2205 fps | 95.5% |
| Lovex D060 | <<locked>> | 92% | 46,427 psi | 84% | 2297 fps | 95% |
| Lovex D063 | <<locked>> | 90% | 43,453 psi | 79% | 2224 fps | 95% |
| Lovex S040 | <<locked>> | 80% | 40,089 psi | 73% | 2136 fps | 100% |
| Lovex S053 | <<locked>> | 86% | 29,109 psi | 53% | 2008 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 18,623 psi | 34% | 1266 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 98% | 41,365 psi | 75% | 2254 fps | 95.6% |
| Shooters World Buffalo Rifle | <<locked>> | 92% | 46,427 psi | 84% | 2297 fps | 95% |
| Shooters World SOCOM | <<locked>> | 90% | 43,453 psi | 79% | 2224 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 23,424 psi | 43% | 1821 fps | 99.4% |
| Vihtavuori N110 | 20.8 gr | 80% | 28,921 psi | 53% | 1988 fps | 99.6% |
| Vihtavuori N120 | <<locked>> | 96% | 31,270 psi | 57% | 2093 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 17 powders for .350 Legend loaded with the .357 | 158gr | Fiocchi SJSP. Hodgdon LilGun delivers the highest muzzle velocity at 2,385 fps; across all powders the maximum-charge window runs from 1,388 fps to 2,385 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 47–90 %, 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. Accurate No. 11 FS, Vihtavuori N110, ADI AR 2205 rank at the top here: for .350 Legend with the .357 | 158gr | Fiocchi SJSP 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.