Case Neck Chamfer Tools Deburring
tapered reamer case mouth chamfer .416-.50

Case Neck Chamfer Tools (Controlled Depth Tapered Reamers)

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The K&M case mouth chamfer tool cuts a shallow angle chamfer on the inside of the case neck for smooth bullet seating while controlling the depth of cut with stop fingers that register on the case mouth which insures each case has the same depth chamfer.  The chamfer angle is 4 degrees per side.  The tool also incorporates a pilot pin that guides through the flash hole of the cartridge to maintain the tool on the centerline of the cartridge for an even cut.

.17 - 6mm Controlled Depth Tapered Reamer

6mm - .338 Controlled Depth Tapered Reamer

controlled depth tapered reamer case mouth .35-.408

.35-.408 Cal. Controlled Depth Tapered Reamer

controlled depth tapered reamer case mouth .416-.50

.416-.50 Cal. Controlled Depth Tapered Reamer

controlled depth tapered reamer case mouth .50 BMG

.416 - .50 BMG Cal. Controlled Depth Tapered Reamer

1/4'' Hex Drive Adapter 5/16-18 for Tapered Reamer-0

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Description

  1. Size your brass before using this tool to insure that the case mouth inside diameter is consistent and perfectly round.
  2. Loosen the thumb screw and use a small flat blade screw driver to adjust the set screw in the handle to move the cutter within the tool body. It is best to start with the cutter set so it is not touching the case mouth and begin inching it forward with the set screw until you just make contact with the case mouth, now advance the cutter forward until the desired chamfer depth is attained and tighten the thumb screw.
  3. Typical chamfer depth is .015”-.030”.
  4. The cutter is sharp so remove material gently until the stop fingers make contact with the case mouth. This usually only takes 2 or 3 revolutions between your thumb and fore finger.
  5. Bullet will now seat smoothly with its base unharmed.

Tool Notes:

how to tapered reamer case mouth chamfer correction tool case neck chamfering

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