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Old October 26, 2012, 08:12 AM   #3
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 5,476
Yes, Remington anneals their case necks to make them more ductile than the case body. So does all case makers.

How much is probably the issue. Also the more a case neck expands when fired plus the more it's sized back down in the die, the more work hardened the case neck gets. This, coupled with harder brass to start with, results in cracks in the case neck to appear sooner.
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