Lots of different ways to lap a barrel and it helps sometimes. You could buy some JB Bore Paste, apply the past to a few cleaning patches and run them evenly up and down your bore on the jag about 25 times each for a total of about 200 strokes. Then clean the paste from your bore. Lapping basically does the same thing your bullets will do after enough shooting so you could also shoot about 100 tightly patched round balls and call it lapped! JB Bore Paste is good because it is a VERY light abrasive and will remove very little metal. http://www.midsouthshooterssupply.com/item.asp?sku=00048083065002 is one source but the have a $40 minimum order.