While today's scope rings are of the best quality they have ever been, many can still be improved using a simple process called lapping. Larry Potterfield, CEO and Founder of MidwayUSA, explains this process using the Wheeler Engineering Scope Lapping Kit. This kit includes a steel bar that when coated with 220 grit lapping compound is worked back and forth inside the assembled rings. This smoothes out any high spots and increases the surface contact between the rings and the scope body. This prevents damage to the scope body, which more rigidly holding the scope to prevent any shifts in point of impact that can result from continuous use.