The Hornady #372 Powder Bushing (MPN: 190143) is a precision-machined volumetric metering component engineered for progressive shotshell reloading presses. Built specifically for Hornady shotshell charge bars—including the Hornady 366 Auto™ and APEX™ systems—this solid-metal bushing drops a consistent volume of smokeless powder with every press cycle. Designated by its inside measurement, the unit features an internal diameter of exactly 0.372 inches (~9.45 mm), enabling reloaders to achieve precise, repeatable charge weights without manual powder trickling once verified on a balance scale.

Key Features

• Fixed Volumetric Dispensing: Functions as a continuous-cycle powder cavity, consistently throwing predetermined powder volumes suited for light-to-moderate target and field load recipes.
• Calibrated Internal Bore: Features a standardized 0.372-inch inside diameter, allowing reloaders to cross-reference Hornady bushing charts to match exact grain requirements across varying propellant bulk densities (such as approximately 14.0 grains of Winchester WST or 16.5 grains of Hodgdon Universal depending on lot conditions).
• Keyed Bushing Geometry: Standardized outer dimensions prevent the accidental reversal or interchange of powder and shot bushings within the charge bar assembly during bench setup.
• Mechanical Simplicity: Operates completely unpowered without electrical requirements, functioning strictly through mechanical charge bar actuation across 12, 20, 28 gauge, and .410 bore setups.

Specifications

• Internal Diameter: 0.372 inches (~9.45 mm)
• Bushing Designation: #372
• Press Compatibility: Hornady 366 Auto™, Hornady APEX™, and legacy Pacific/Hornady progressive shotshell charge bars
• Power Supply: None (fully mechanical)

Who is the Hornady #372 Powder Bushing for?

• Competitive trap and skeet shooters — relies on the calibrated 0.372-inch inside diameter of this shotshell reloading powder bushing to maintain tight velocity spreads when cycling thousands of light 12 gauge or 20 gauge clay-target loads.
• High-volume waterfowl hunters — requires the fixed 0.372-inch internal cavity of this shotshell powder bushing to meter repeatable powder charges for uniform non-toxic hunting payloads without slowing progressive press output.

Less suitable for: Progressive presses using non-Hornady charge bar systems (such as standard third-party shotshell charge bars) or metallic cartridge setups, which require brand-specific charge adapters, adjustable rifle drum measures, or dedicated rifle neck-sizing bushings instead of a fixed 0.372-inch shotshell bushing.