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Old 03-16-2009, 8:19 AM
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ar15barrels ar15barrels is offline
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Quote:
Originally Posted by smokingloon View Post
What makes the Type S match dies better than the other combo?
http://www.redding-reloading.com/pag...shseatdie.html

The Type S dies take neck sizing bushings which come in 0.001" steps so you can choose the minimum amount of neck sizing necessary.
You also have the ability to adjust how much of the neck length you size.
Partially sizing the neck and leaving 25% un-sized will force the cartridge to center within the chamber, therefore holding the bullet in better alignment for it's trip down the barrel.

Standard dies size the neck down smaller than necessary and then expand it back out.
This shortens case life and does not make ammo quite as accurate.
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