No Longer Here, BY CHOICE
I think I found a solution to this problem.
I always draw witness marks across the cutline before cutting the blank into 2 pieces and drilling.
Once the tubes are in, and before I start turning away my witness marks, I take a Sharpie and draw a line inside the brass tubes, effectively copying the witness marks from the outside of the blank to the inside.
Nobody can see the internal mark in the barrel that has the transmission, and after I've assembled the cap components into the top barrel I just clean up inside the open end of the brass tube with some 320 or 400 grit sandpaper.
Thats definately a solution. I never thought of marking them inside. I will definately start marking them though. I sand the ends of my finished barels and I hate picking one up and then trying to remember which end went where.
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