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Old 11-12-2019, 06:01 PM
Daryl Daryl is offline
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Join Date: Sep 2006
Location: Prince George, B.C. Canada
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If the die is not sizing the necks small enough, then reducing the expander button will increase neck tension, yes.

If you are attempting any form of crimp on a bullet that does not have a crimp groove, ie: crimping cannelure, the case shoulder will likely be buckled when attempting to crimp the case into the sides of the bullet.

The use of a Lee Factory Crimp die, will allow (allows) crimping bullets that do not have a crimping groove. The standard seating die crimping ring will not allow this process without bucking cases. The collet principle
of the Lee die, crimps the case by applying side pressure all around the case neck pressing the case into the bullet - from the side. The crimp ring inside the standard seating die, forms the crimp by pushing the case
up against a fixed restrictive ring inside the die, thus buckling the case shoulder as the pressure is vertically administered.
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Last edited by Daryl; 11-12-2019 at 06:06 PM.
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