+1(really hate using that) Will a CHF barrel last longer? Yes/probably/maybe/who the hell knows since nobody has really provided any solid data for me to dissect.
I understand(to some degree) the metallurgy that says a CHF barrel should last longer, but it really seems like there isn't much hard data that says if it will last an extra one hundred rounds or an extra ten thousand rounds under a similar firing schedule as a traditional button rifled barrel made from steel that meets B-11595E.

