What is the primary goal of adjusting barrel harmonics by changing seating depth?

The primary goal of adjusting barrel harmonics by changing seating depth is to improve accuracy. When a bullet is fired, the barrel vibrates in a specific manner, which is referred to as barrel harmonics. The seating depth of the bullet can significantly affect these vibrations, influencing the point of impact and overall precision of the shot. By fine-tuning the seating depth, a shooter can alter how the bullet interacts with the barrel's vibrations, leading to tighter shot groups and improved accuracy.

This approach takes advantage of the fact that different bullets may behave differently depending on how deep they are seated in the cartridge case. Finding the optimal depth allows the bullet to exit the barrel at a moment when the harmonics are at their most favorable, thus enhancing performance.