I have no idea if this is relevant. I have been told that the blanks coming from most manufacturers are iffy. One count was 1 in 5 are good enough for a precision build. The numbers are a little better with the biggest of the makers like Bartlein and Krieger. Fred had problems with suppliers( I don't know what that was about though) and has/had stopped doing any barrels unless the customer supplied it. Good luck guys and I hope you get your stuff soon.