I have been advised by some to run a course of fire lapping on the barrel of a hunting rifle to improve the lousy groups and extreme copper fouling. The company recommended to buy the kit from was NECO Products. Description of their kit is here: www.neconos.com/details2.htm Tell me if you or a close associate has tried fire lapping of a barrel. Of particular concern to me is whether this process accelerates throat erosion. Thanks!