Hornady Powder Bushing 498 for 366 Auto Shotshell Press
S117770
- Drop-in powder charge bushing for the Hornady 366 Auto and APEX shotshell reloading presses
- Bushing number 498 denotes a bore of .498 inches inside diameter, not a grain weight
- Actual powder charge depends on powder type and density - consult the Hornady 366 Auto bushing chart
- Chart values are averages of multiple weighed loads completed through a full reloading cycle
- Press-specific design: 366 Auto chart bushings are not interchangeable with other Hornady loader models
- Simple swap-out allows reloaders to change powder charge weights without adjusting the press
The Hornady Powder Bushing 498 is a drop-in powder charge bushing for the Hornady 366 Auto and APEX shotshell reloading presses. Hornady identifies each bushing by a number that corresponds to the inside diameter of the bushing bore in thousandths of an inch, so the 498 has a bore of .498 inches. That reference number is not a grain weight: the actual powder charge dropped depends entirely on the density and granulation of the powder being used, and reloaders must consult Hornady's 366 Auto bushing chart to find the correct charge weight for their chosen powder. Charges listed on the chart represent averages from multiple weighed loads completed through a full reloading cycle using manufacturer-supplied powder samples; slight variation is normal due to individual technique and powder lot differences. Because powder agitation during the loading cycle affects charge weight, bushings are press-specific and the 366 Auto chart should not be used to select bushings for other Hornady loader models. Replacing a worn or incorrectly sized bushing is a straightforward way to dial in consistent powder drops and maintain load-to-load uniformity across a reloading session.
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