Load Specifications
Load data in caliber .356 Win. with .356 | 145gr | LOS RN bullet and 17 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Alliant Reloder-7 and ReloadSwiss RS 36.
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 1680 | <<locked>> | 92% | 45,513 psi | 88% | 2703 fps | 96.2% |
| ADI AR 2205 | <<locked>> | 84% | 46,528 psi | 89% | 2641 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 45,527 psi | 88% | 2812 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 96% | 45,498 psi | 87% | 2756 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,269 psi | 56% | 1713 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 43,497 psi | 84% | 2726 fps | 96.9% |
| IMR 4227 | <<locked>> | 90% | 45,266 psi | 87% | 2710 fps | 98.6% |
| Lovex D060 | <<locked>> | 84% | 46,470 psi | 89% | 2746 fps | 97.4% |
| Lovex S053 | <<locked>> | 92% | 46,166 psi | 89% | 2723 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 45,353 psi | 87% | 2812 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,718 psi | 55% | 1752 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 46,862 psi | 90% | 2779 fps | 98.7% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 46,470 psi | 89% | 2746 fps | 97.4% |
| Shooters World SOCOM | <<locked>> | 84% | 46,528 psi | 89% | 2717 fps | 98% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 45,078 psi | 87% | 2579 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 45,963 psi | 88% | 2661 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 45,759 psi | 88% | 2776 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 1680 | <<locked>> | 90% | 42,569 psi | 82% | 2648 fps | 95.4% |
| ADI AR 2205 | <<locked>> | 80% | 41,249 psi | 79% | 2549 fps | 99.8% |
| ADI AR 2207 | 37.3 gr | 84% | 29,588 psi | 57% | 2461 fps | 95.6% |
| Alliant Reloder-7 | 41.4 gr | 90% | 38,058 psi | 73% | 2608 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,379 psi | 41% | 1529 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 38,928 psi | 75% | 2631 fps | 95.5% |
| IMR 4227 | <<locked>> | 80% | 33,562 psi | 65% | 2464 fps | 95.7% |
| Lovex D060 | <<locked>> | 80% | 41,234 psi | 79% | 2641 fps | 96.2% |
| Lovex S053 | <<locked>> | 80% | 32,677 psi | 63% | 2451 fps | 98.5% |
| Norma 200 | <<locked>> | 94% | 37,550 psi | 72% | 2654 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,118 psi | 41% | 1568 fps | 100% |
| ReloadSwiss RS 36 | 37 gr | 80% | 32,401 psi | 62% | 2477 fps | 95% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 41,234 psi | 79% | 2641 fps | 96.2% |
| Shooters World SOCOM | <<locked>> | 80% | 40,973 psi | 79% | 2612 fps | 96.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,951 psi | 60% | 2320 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,682 psi | 74% | 2536 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 26,498 psi | 51% | 2346 fps | 95.6% |
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 25 powders for .356 Win. loaded with the .356 | 145gr | LOS RN. ADI AR 2207 delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,812 fps. ADI AR 2219 gives the best case fill at 100 %, and 25 of the 25 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. ADI AR 2219, Alliant AR-Comp, Alliant Reloder-10x 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. ADI AR 2207, Alliant Reloder-7, ReloadSwiss RS 36 rank at the top here: for .356 Win. with the .356 | 145gr | LOS RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate LT-30, ADI AR 2219, Alliant AR-Comp 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.