The Bisley rifle/pistol wool mops is an alternative accessory to the wire brush, a wool mop can ensure a smooth barrel which helps reduce shot clipping.
 
Features
Suitable for different gauges of gun - female thread
Attach to a gun rod for a softer clean than a wire brush
Can be used to apply gun oil inside a gun barrel
Will reduce shot clipping and give a better shot
Size options: .22, .30,  .40, .45, .50 and .60 Calibres