Ebay has a kit. Anything under 5000,it only takes a few stokes. I take my rifling down all the way near about. Start with 1000gr,3to 4 stokes,then 2000gr 6 stokes,and so on. Anything below 5000 takes metal away,becareful. I push a pellet thru with a rod,look at results,feel how easily it...