Hornady Powder Bushing #516 for 366 Auto Shotshell Press
S117771
- Replacement powder charge bushing for the Hornady 366 Auto progressive shotshell press and APEX loader
- Bushing number (#516) denotes inside diameter (.516 inches), not a grain weight — actual charge depends on powder type
- Always use Hornady's 366 Auto bushing chart to determine the correct charge for your chosen powder
- Chart values are averages from multiple weighed loads after a full reloading cycle, using manufacturer-supplied powder samples
- Due to powder agitation during reloading, this chart is specific to the 366 Auto and APEX — separate charts apply to other Hornady loaders
- Interchangeable design allows easy swapping between bushing sizes to fine-tune your shotshell load
The Hornady Powder Bushing #516 is a replacement charge bushing designed for use with the Hornady 366 Auto progressive shotshell reloading press and the Hornady APEX loader. Hornady powder bushings are numbered according to the inside diameter of the bushing cavity — the #516 bushing has an inside diameter of .516 inches. The bushing number does not indicate a grain weight; the actual powder charge dropped depends on the specific powder being used, and reloaders should always consult Hornady's official 366 Auto bushing chart to determine the correct charge for their chosen propellant. Because powder agitates during the reloading cycle, Hornady's bushing charts are specific to each press model — the 366 Auto chart applies only to the 366 Auto and APEX, and separate charts exist for other Hornady loaders. All charge figures on the Hornady chart represent averages from multiple weighed loads completed through a full reloading cycle, using manufacturer-supplied powder samples. Charges may vary slightly with operator technique and powder lot. These interchangeable bushings allow shooters to fine-tune their shotshell loads with confidence.
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