Load Specifications
Load data in caliber 9.3 x 72 R with .366 | 220gr | Reichenberg HDB Universal bullet and 4 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 14 and Hodgdon TrailBoss.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 90% | 26,107 psi | 90% | 2116 fps | 96.1% |
| Alliant AR-Comp | <<locked>> | 82% | 25,701 psi | 89% | 2083 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 86% | 25,715 psi | 89% | 1355 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 86% | 25,585 psi | 88% | 1388 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 88% | 24,279 psi | 84% | 2067 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 24,178 psi | 83% | 2041 fps | 97% |
| Hodgdon TrailBoss | 13.2 gr | 80% | 23,264 psi | 80% | 1302 fps | 100% |
| ReloadSwiss RS 14 | 13.5 gr | 80% | 23,177 psi | 80% | 1335 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
This overview compares 4 powders for 9.3 x 72 R loaded with the .366 | 220gr | Reichenberg HDB Universal. Accurate 2495 delivers the highest muzzle velocity at 2,116 fps; across all powders the maximum-charge window runs from 1,355 fps to 2,116 fps. Accurate 2495 gives the best case fill at 90 %, and 4 of the 4 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (200 MPa), the top charges use 88–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.366" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 9.3 x 72 R with the .366 | 220gr | Reichenberg HDB Universal 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.