338 edge brass ?

[yama49]

hornadys book says trim length 2.840"

 

[txlongrange]

hornadys book says trim length 2.840"

I'm going off of my new batch of 300 Ultra Mag brass that I will neck up to 338 to "create" the 338 edge. I checked 10 new pieces and found them all close to 2.85.

Also, for reference:

http://www.accuratepowder.com/data/...M Remington Ultra Magnum pages 272 to 275.pdf