A few years ago the home made guide was the rage, if the cleaning rod wore the steel barrel brass guides would indicate fast ware. Again, it is assumed the cleaning rod wares the muzzle. I do not push the cleaning rod through the barrel, I make every effort to pull. And I use a cleaning rod system that is unlike other systems. I thought there has to be a better way when someone brought me a rifle with a bore snake stuffed into the barrel.
Years ago a photograph escaped notice but won an award in the art world, seems the photographer managed to take a picture of a projectile at the moment it left the barrel. Anyhow the picture has not been seen in years but it was s shock to those that thought they had it all figured out; the picture was taken long before the term "are you kidding me?".
F. Guffey
I have no doubt that, eventually, a rod would wear the lands and crown. I'm in the camp that dirt and debris from the cleaning process, that ends up on the rod(and brush) itself, is of more importance, as the dirt will make either abrasive. I don't know how to calculate the amount of pressure generated by pushing, say, a 44"x.250 diameter ss rod@x amount of resistance and convert that to how hard the rod would actually be bearing against the bore, under normal circumstances..but I think this is what is all comes down to. That's aside from ever getting a tight patch..and hitting the rod handle with the palm of your hand, for example. I have no doubt that this can and likely will damage the bore with a ss rod.
I don't use ss rods, or any other steel rod, for that matter. I prefer carbon fiber but I also own a couple of coated Dewey rods.
The test I did that I mentioned above, was a couple of years ago and I don't remember every value that I used in the test, but it went like this...I used pieces ss rod and a carbon fiber rod and chucked them into a chuck in my mill. I put an old barrel stub in the mill vise. I used a digital trigger pull gauge to approximate equal pressure of both rods against the piece of barrel stub and cranked up the machine so that the rod would spin against the od of the ss barrel stub. The test may not be the end all, be all on this subject, but it wasn't even close. The ss rod ran for a matter of seconds against the barrel stub before galling and gouging both the barrel stub and the rod. The carbon fiber rod ran for several minutes against it before I shut it off and examined both the rod and the barrel stub....You could hardly see where it had been running against one another.
Again, this test may be leaving out some important variable, in the real world. I don't recall how much pressure or RPM I used for the test but I think that both were way, way, WAY above what is generated in normal use. Either way, this dispelled the claims that carbon fiber was too abrasive to be used for a cleaning rod..to me.--Mike