Vance, the ballistics tech at Western powders told me that the Barnes copper(XPB) data would work just fine of the CEB's.

What I found is that it is just not possible to fit enough slower "pistol" powder under these ultra long coper bullets. With Ramshot Enforcer/Accurate4100 (as long as you load to the crimp groove) you can just add as much powder as it takes for the bullet to just "Bump" the powder charge,,,and this is your load. You will still be quite a ways under the starting load for an equal bullet weight.

I think faster powders like A#7, and HS-6 are going to prove to be just what the doctor order for these long, light weight coppers..

http://www.ramshot.com/wp-content/uploads/2010/09/WP_LoadSpec_1-23-14.pdf