Will a few points of Rockwell hardness make much of a differance in barrel life? If so why wouldnt everyones use a harder barrel? I was reading about douglas compared to Pac nor and how the douglas is harder and will last longer and possibly errode less(but is not hand lapped). In the past I always heard that Lothar Walther barrels were harder than snot(I could not find their hardness listed). Im just thinking that for large magnum cartridges given that the barrels are well lapped and machined the same that one would last longer than another. Of course next would be if their barrels are actually as hard as they state, I have heard of batches of softer barrels and what not. Krieger 28-32RC Pac Nor 26-28RC Douglas 28-30RC Lilja ? LW ? Shilen ?