OK. For those that read my last post about ramrod wear I deleted it after I found the article. I'll start over.
Back in the November 2008 issue of
Muzzle Blasts, the official magazine of the National Muzzleloading Rifle Association the Bevel Brothers wrote in their "Stump the Experts" column about ramrods causing muzzle wear.
To test this they rigged up an electric drill with a piece of steel mounted in the chuck. This served as a crank to which they attached the ramrod. As the drill ran, the ramrod would move in and out of the test barrels muzzle.
They tested Hickory, brass, stainless steel and fiber glass for the ramrod materials.
A different barrel was used for each ramrod material so they could see what, if any, damage was done.
They coated the wooden ramrod with, "some of the powder residue and set it up in the Wipe-o-Lator to run all by itself. At the end of one hour I came back and smeared another coat of powder residue on the rod and let it run for another hour...."
"Each test got the same treatment starting with a dirty rod and bore, followed by a supplementary application of powder dirt half way thru the two-hour cycle...."
"...the only rod that did any real damage ws the stainless steel, and it was significant. All the other barrels sustained such minor effects that we couldn't even measure the difference before and after with a caliper...although they did take on a polished appearance at the points of contact..."
My only regret with their test is it might have been a little more realistic if they would have handled each rod after handling a few oiled shooting patches and then put each rod on a somewhat dirty bench.
That might have come closer to reflecting what happens a lot of the time.
Cheers.