Hornady Powder Bushing #525 for 366 Auto Shotshell Press
S117772
- Powder charge bushing for the Hornady 366 Auto and APEX progressive shotshell reloading presses
- Bushing number 525 denotes the inside bore diameter: 0.525 inches — not a grain weight
- Actual powder charge varies by propellant type; consult Hornady's official 366 Auto bushing chart
- Allows selection in half-grain increments by interpolating between adjacent bushing numbers
- Compatible with a wide range of powders including Hodgdon, Alliant, Winchester and IMR brands
- Hornady item number 190178 — the largest bushing in the 366 Auto/APEX range
- Sold individually; fits directly into the powder measure station of the 366 Auto press
The Hornady Powder Bushing #525 (item 190178) is a replacement powder charge bushing for the Hornady 366 Auto and APEX progressive shotshell reloading presses. Hornady identifies its bushings by a number that corresponds to the inside diameter of the bore in thousandths of an inch — bushing #525 therefore has a bore of 0.525 inches. The charge it drops varies by powder type and density, so reloaders must consult Hornady's official bushing chart for the 366 Auto and APEX to determine the correct bushing for their chosen powder and target load. The chart covers a wide range of popular propellants including Hodgdon, Alliant, Winchester and IMR powders, allowing precise charge selection in half-grain increments by interpolating between adjacent bushing numbers. Each bushing fits directly into the powder measure station of the 366 Auto press. Because powder behaviour is affected by agitation during the reloading cycle, Hornady's chart data applies specifically to the 366 Auto and APEX — it should not be used with other press models. Sold individually.
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