Stan,
it's not hard to learn the technique or "Engineering" involved if your task is to match the sleeves to the "hakenstuck"(?) or finish them for bluing. On the otherhand, if your task is to change the balance to get the "feel" you want; the "art" involved will be more difficult to learn. I suggest you buy a couple sets of "ragged out" barrels to practice on. Don't be afraid to grind your files to create safe edges or different shapes. Different people use different tools, but I find a couple different size Barrett files very handy. Be careful around the ribs, you can file a groove in the barrel, before you know it. Remember, they are your barrels, if you mess them up, it's none of our business.
Mike
