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RCBS

Rock Chucker Supreme Single Stage Press

The default single-stage press for new and precision reloaders. A cast-iron O-frame with a 4.25-inch window that swallows belted magnums, an ambidextrous handle, and enough leverage to full-length size .338 Lapua brass without flexing.

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Quick Specs

Price
$254
Weight
19 lb
Brand
RCBS
Category
reloading-press

Features

  • Single-stage cast-iron O-frame
  • 4.25 in window opening
  • Standard 7/8-14 die threads
  • Ambidextrous handle mounting
  • Compound leverage linkage

Capability Boosts

Reliability+2

Recommended For

Home Defense+2
Duty/Patrol+2
Outdoor Defense+2

Compatibility Tags

type: reloading-pressguide-onlyuse: reloadingpress: single-stagelevel: beginnerlevel: precisionuse: rifleuse: pistol

Overview

The RCBS Rock Chucker Supreme is the press most reloaders should start with and the one many never replace. The cast-iron O-frame resists the flex that limits aluminum C-frame presses, and the compound leverage linkage lets you full-length size the largest cases a single-stage press will ever see. The 4.25-inch window opening clears belted magnums and long rifle brass that bind in shorter presses. The handle mounts on either side for left or right-hand operation. For load development, where you process one cartridge through one die at a time and want every step to feel identical, the single-stage Rock Chucker is the reference platform other presses get measured against.

Key Features

  • Cast-iron O-frame eliminates the frame flex of aluminum C-presses
  • 4.25-inch window opening clears belted magnums and long rifle cases
  • Compound leverage linkage sizes the largest brass with controllable effort
  • Ambidextrous handle mounts for left or right-hand operation
  • Standard 7/8-14 threads accept every common die brand

Pros

  • +Cast-iron rigidity full-length sizes magnum brass without flex
  • +Decades-deep parts, accessory, and upgrade ecosystem
  • +Single-stage repeatability is ideal for precision rifle load development
  • +Ambidextrous handle and large window suit nearly any cartridge

Cons

  • Single-stage throughput tops out around 50 to 60 rounds per hour
  • No onboard powder or priming automation; you add those as accessories
  • Heavy enough that it wants a permanently bolted bench

Detailed Specifications

type
Single-stage O-frame
frame
Cast iron
windowOpening
4.25 in
dieThreads
7/8-14
handle
Ambidextrous mounting
throughput
About 50 to 60 rounds/hour

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