quick question...what is the real issue if you dont chrome line the barrel or bolt. is it just an issue of ease of cleanning...or is corrosion issues involved?
As far as gun oil,(lube) I've been mixing my own.. 40% mobil1 40% dura lube 20% marvel mystery oil .. Usually around the ring area there is/was carbon , since using this mixture even after 500-1000 rds its almost as good as when it was freshly cleaned & oiled..