Bushing die help

[Diver]

I neck sized some 223 lapua match cases using my Redding competition bushing dies this evening. I was using a .246" bushing. My brass has an average .012" thickness. I am trying to get a .002 neck tension. When I measure the resized brass neck diameter, I get .244". Am I missing something? I tought the sized neck should match the bushing size or rebound a bit after sizing.

Am I overworking my brass? Should I consider using a larger diameter bushing? My fireformed brass has a diameter of .252" prior to sizing.

Thanks for any insights.

 

[NormB]

I neck sized some 223 lapua match cases using my Redding competition bushing dies this evening. I was using a .246" bushing. My brass has an average .012" thickness. I am trying to get a .002 neck tension. When I measure the resized brass neck diameter, I get .244". Am I missing something? I tought the sized neck should match the bushing size or rebound a bit after sizing.

Am I overworking my brass? Should I consider using a larger diameter bushing? My fireformed brass has a diameter of .252" prior to sizing.

Thanks for any insights.

The brass should come out of the bushing near the size marked on it. Maybe this bushing is miss marked. You had better try a set. .245, 246, 247 bushings. Use the one that gives best results.

NormB