How to Determine Which Bushings You Need:
The easiest way to determine the proper diameter bushing, is to measure the neck diameter of several loaded or dummy cartridges with an accurate micrometer. Subtract .001?- .002? from the average neck diameter and this diameter bushing will generally size case necks to create the proper press fit for the bullet.
Another method is to measure the neck thickness with a ball micrometer or Redding?s Case Neck Gauge. Double the wall thickness and add this number to the bullet diameter. The result is the neck diameter of a loaded cartridge, and bushing size can be determined as above.
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REDDING STEEL BUSHING(73XXX)
By selecting the correct bushing, you are now able to provide just the right amount of neck tension to properly hold the bullet without excessive resizing.
External dimensions are 1/2″ O.D. x 3/8″ long. They can freely interchange in all Redding Bushing style Neck Sizing Dies.
They are available in .001″ size increments throughout the range of .185″ thru .368″, covering all calibers from .17 to .338 and clearly marked with size I.D.
Heat treated steel. The sizing diameters are hand-polished with a surface hardness of Rc 60-62 to reduce sizing effort.
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Brand:Redding




