The Hornady Primer Punch - Large (MPN: 390035) is an OEM replacement mechanical reloading component manufactured from precision-machined hardened steel. Designed as an integral part of Hornady’s Positive Priming System (PPS), this sub-ounce pin-and-base assembly measures under 2 inches in length and mounts inside the primer arm mechanism of compatible single-stage presses. It provides flat, uniform seating leverage to seat primers below flush in centerfire cartridge primer pockets, preventing high primers and ignition failures during batch reloading operations.

Key Features

  • OEM Positive Priming System Component: Functions as a direct drop-in replacement part inside the press swing-arm assembly alongside the Large Primer Cup (#390006) and primer cup spring (#390007).
  • Precision Hardened Steel: Machined from hardened steel to resist deformation, bending, and wear during repetitive on-press priming strokes.
  • Below-Flush Seating: Delivers square mechanical leverage against primer cups to seat primers consistently below the cartridge case head across batch operations of 50 to 200 rounds.
  • Fully Mechanical Operation: Requires no external power supply or electrical connections for manual, on-press priming at the ram stroke.

Specifications

  • Brand: Hornady
  • Manufacturer Part Number (MPN): 390035
  • Product Type: Mechanical primer seater punch
  • Material: Precision-machined hardened steel
  • Primer Size Compatibility: Large Rifle and Large Pistol primers (nominal diameter of approximately .210 in / 5.33 mm)
  • Press Compatibility: Hornady single-stage presses utilizing the Positive Priming System (PPS), principally the Lock-N-Load Classic Single Stage Press
  • Physical Dimensions: Under 2 inches in overall length; sub-ounce component weight

Who is the Hornady Primer Punch - Large for?

  • Hornady Lock-N-Load Classic Single-Stage Press Owners — Installs directly into the factory Positive Priming System arm to replace lost, bent, or worn primer punches, maintaining single-stage on-press seating capability for .210-inch (5.33 mm) diameter large primers.
  • Handloaders Reloading Large Rifle or Large Pistol Cartridge Calibres — Delivers flat, mechanical seating leverage sized specifically for standard .210-inch (5.33 mm) primer pockets to eliminate high primers in centerfire brass.

Less suitable for: Cartridge brass utilizing .175 in (4.45 mm) Small Rifle or Small Pistol primers, which require a small primer punch, or high-volume reloaders operating progressive press feed slides or handheld priming tools that require slide-compatible or tool-specific priming assemblies.

SKU HN42885LP
Model # 390035
Brand Hornady
Shipping Weight 1.0000kg

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