Load Specifications
Load data in caliber .358 Win. with .3555 | 158gr | Prvi Partizan FMS bullet and 26 powders. The key underlying parameters are shown in the table above.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 96% | 51,866 psi | 88% | 2795 fps | 98.9% |
| Accurate 5744 | <<locked>> | 82% | 52,069 psi | 89% | 2828 fps | 99.5% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 48,733 psi | 83% | 2726 fps | 96% |
| Accurate No. 11 FS | <<locked>> | 84% | 51,242 psi | 87% | 2766 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 52,359 psi | 89% | 2697 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 48,298 psi | 82% | 2841 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 39,682 psi | 68% | 2717 fps | 97.2% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 51,561 psi | 88% | 2844 fps | 99.3% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 46,224 psi | 79% | 2710 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 98% | 50,691 psi | 86% | 2772 fps | 95.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,254 psi | 50% | 1670 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 43,671 psi | 74% | 2723 fps | 98.6% |
| IMR 4227 | <<locked>> | 94% | 51,024 psi | 87% | 2779 fps | 99.9% |
| Lovex D060 | <<locked>> | 88% | 52,417 psi | 89% | 2835 fps | 99.5% |
| Lovex D063 | <<locked>> | 84% | 52,257 psi | 89% | 2808 fps | 99.5% |
| Lovex S053 | <<locked>> | 96% | 51,895 psi | 88% | 2779 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 45,353 psi | 77% | 2805 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,805 psi | 49% | 1709 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 53,084 psi | 90% | 2858 fps | 100% |
| Shooters World Blackout | <<locked>> | 84% | 52,257 psi | 89% | 2808 fps | 99.5% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 52,417 psi | 89% | 2835 fps | 99.5% |
| Shooters World SOCOM | <<locked>> | 86% | 49,893 psi | 85% | 2753 fps | 99.6% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 52,576 psi | 90% | 2635 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 51,750 psi | 88% | 2700 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 48,559 psi | 83% | 2795 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 38,928 psi | 66% | 2628 fps | 96.6% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 35,085 psi | 60% | 2497 fps | 95.5% |
| Accurate 5744 | <<locked>> | 80% | 48,863 psi | 83% | 2776 fps | 99.2% |
| Accurate LT-30 | <<locked>> | 98% | 45,759 psi | 78% | 2677 fps | 95.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 44,788 psi | 76% | 2671 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 41,089 psi | 70% | 2523 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 26,353 psi | 45% | 2382 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 94% | 32,982 psi | 56% | 2569 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 84% | 31,560 psi | 54% | 2464 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 43,511 psi | 74% | 2664 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 96% | 47,950 psi | 82% | 2730 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,582 psi | 37% | 1496 fps | 100% |
| IMR 4198 | <<locked>> | 88% | 31,212 psi | 53% | 2448 fps | 95.1% |
| IMR 4227 | <<locked>> | 80% | 33,750 psi | 57% | 2464 fps | 97.8% |
| Lovex D060 | <<locked>> | 80% | 41,510 psi | 71% | 2638 fps | 98.1% |
| Lovex D063 | <<locked>> | 80% | 45,614 psi | 78% | 2703 fps | 98.9% |
| Lovex S053 | <<locked>> | 80% | 32,764 psi | 56% | 2444 fps | 99.7% |
| Norma 200 | <<locked>> | 88% | 31,125 psi | 53% | 2513 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,132 psi | 36% | 1529 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 32,445 psi | 55% | 2480 fps | 97.3% |
| Shooters World Blackout | <<locked>> | 80% | 45,614 psi | 78% | 2703 fps | 98.9% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 41,510 psi | 71% | 2638 fps | 98.1% |
| Shooters World SOCOM | <<locked>> | 80% | 40,915 psi | 70% | 2602 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,009 psi | 53% | 2293 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,740 psi | 66% | 2507 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 26,731 psi | 46% | 2359 fps | 98% |
| Vihtavuori N130 | <<locked>> | 96% | 34,708 psi | 59% | 2539 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 26 powders for .358 Win. loaded with the .3555 | 158gr | Prvi Partizan FMS. ReloadSwiss RS 36 delivers the highest muzzle velocity at 2,858 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,858 fps. Accurate LT-30 gives the best case fill at 100 %, and 26 of the 26 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. Accurate LT-30, ADI AR 2207, 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.