English gunmakers may have coated barrels with "boiled" linseed oil in the past. However, just like most things "boiled" linseed oil is new and improved from the old days and it is not boiled but processed and part of that process includes chlorine. Do you know what chlorine and chlorides do to steel, especially when the steel or the solution is hot?
One of Jack Rowe's colleagues used boiled linseed oil instead of the regualr "raw" linseed oil that he normally used to heat and bend stocks. Guess what, he had to reblue and re-color case hardened the gun, as the hot boiled linseed oil with it's chlorine did a trick.
Play it safe and use something less likely to play havoc with your shooting instrument.
