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Forster Products Full Length Sizing Die, 338 Lapua Mag

Forster Products

Forster Products Full Length Sizing Die, 338 Lapua Mag


Forster Products Full Length Sizer Cutaway Diagram

Case Sizing with Forster Bench Rest Sizing Dies

World-class dies for shooters with a mission to increase precision

Case sizing involves using a reloading press to form a properly lubricated cartridge case through the interior of a resizing die. The sizing die's interior is slightly larger than a new cartridge case. This resizing process returns the fired brass case to a size that will always allow it to fit back into a minimum-sized SAAMI chamber.

Forster Products manufactures two types of Bench Rest Sizing Dies: the Full Length Sizing Die and the Bushing Bump Neck Sizing Die.

All sizing dies feature a decapping pin that automatically deprimes (that is, it removes the spent primer from the primer pocket).

Pinpoint accuracy and uncompromising performance begin with quality reloading equipment from Forster Products.


  • Manufactured from the finest quality steel
  • Carefully machined on precise chucking lathes to very tight tolerances
  • Manufactured with one-piece reamers to help ensure concentricity between all machined diameters
  • Heat treated and oil quenched in atmospherically controlled furnaces to an extremely tough Rockwell hardness
  • Hand polished in a high-speed lathe both before and after heat treating to achieve an extra-fine finish
  • Full Length Sizing Dies are equipped with our exclusive “E-Z” Out Expander Ball, which helps solve the problem of keeping case necks concentric during the neck expanding operation
  • The combination of our elevated “E-Z” Out Expander Ball and butyl rubber Co-Ax Washer corrects misalignment of the Decapping/Expander Assembly and prevents the case neck from pulling off center during the expanding procedure


Forster Products Full Length Sizing Die

Full-Length Sizing Die

Produces ammunition that has a “glove fit” to your chamber. Use after each firing or after several firings, when the resulting brass flow will require the case to be full-length sized.

Because they offer maximum flexibility, most reloaders start their collection of Bench Rest dies with full length sizers. The die sizes the case neck and body, sizes shoulder to set headspace (length), deprimes, and expands the case neck.

Full Length Sizing Dies are available in more than 70 calibers, either individually or as part of the Bench Rest Die Set with a Bench Rest Seater Die.


  • Sizes the case neck, shoulder, and body and deprimes and expands the case neck
  • Allows the case to be re-chambered in a SAAMI minimum size rifle chamber
  • Vent hole located in the threaded portion of the die prevents damage from trapped air and lubricants
  • Machined by hand with one-piece reamers
  • Exclusive elevated “E-Z” out expander ball system

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