The Lee Precision Breech Lock Challenger Press is an "O"-frame single-stage reloading press designed for manual decapping, sizing, expanding, powder charging, and bullet seating. Built around a cast aluminum alloy frame offset at a 30° angle for ergonomic clearance, the press operates via an all-steel compound linkage and a curved, ambidextrous handle. It utilizes the Lee Breech Lock Quick Change system, allowing standard 7/8"-14 threaded reloading dies to be removed and inserted with a 1/6th-twist without altering die depth settings.

Key Features:

• Breech Lock System: Accommodates standard 7/8"-14 dies within interchangeable bushings for rapid die changes without loss of adjustment.
• Integrated Priming & Disposal: Includes the Lee Lever Prime System with large and small priming arms, paired with a hollow ram and drop-tube design that channels spent primers directly into a waste container.
• Offset Frame Architecture: 30° angled cast aluminum "O"-frame provides direct visual and physical access to the shellholder.
• Bench Mounting Base: Features a 3-hole base configuration designed for 1/4" or 5/16" mounting hardware.
• Manual Mechanical Operation: Operates entirely without electrical power, accepting standard universal snap-in shellholders, Boxer primers, and standard ADI propellant workflows.

Specifications:

• Frame Opening: 4.25 inches (approx. 108 mm)
• Ram Stroke: 3.5 inches (approx. 89 mm)
• Ram Diameter: 0.815 inches (approx. 20.7 mm)
• Total Weight: 5.6 to 6.05 lbs (approx. 2.54 to 2.74 kg)
• Frame Material: Cast aluminum alloy
• Linkage: All-steel compound linkage
• Die Thread Compatibility: 7/8"-14 via Breech Lock bushings
• Typical Output: 50 to 100 rounds per hour

Who is the Lee Precision Breech Lock Challenger Press for?

• Low-to-medium volume handloaders assembling precision rifle or pistol ammunition — requires the mechanical consistency of a 0.815-inch diameter solid steel ram and a 4.25-inch frame opening to size and seat standard hunting and target calibres like .223 Rem and .30-06 Springfield at rates of 50 to 100 rounds per hour.
• Shooters transitioning from factory loads to custom bench reloading — benefits from this single-stage reloading press's 3.5-inch ram stroke, 30° offset frame clearance, and quick-change die bushings to learn full-length sizing and bullet seating without managing multi-station progressive indexing.

Less suitable for: High-volume production exceeding 100 rounds per hour (better served by a progressive reloading press), ultra-magnum cases exceeding 4.25 inches in frame opening clearance, or heavy-duty operations like bullet swaging and severe case forming requiring a heavy cast-iron reloading press.