Hope not highjack this thread, but I was reading you guys talking about washing, etching and take out the lube of the core.
Well, I was teached by one of the best bullet makers in US to do exactly this to the core: cut, degrease with detergente on very hot water, dry. It comes with a etched light grey color. Then you seat the core. This process looks like a standard with bullet makers.
But, talking with one of the top BR shooters in the world (american), that does make his own bullets (sometimes he uses my "teacher" bullets too), told me that he does not take the lube out of his cores, as he believes that it helps the core seating to be more precise, even and without any air bubbles.
From my point of view, I think that degrease the core and have a light etch is a good thing for the core to adhere better on the jacket. But I really cannot argue with the success that my other friend has with his bullets on real world BR matches.
What do you think about this?
I would like to hear your opinions on this subject, as this theme seems to be around on this thread.