The REVOLVER DEBURRING TOOL by BROWNELLS is designed to remove burrs from the outer edge of the forcing cone, improving accuracy without disassembling the gun.
It can be used on the chamber throat to ensure rounds drop in easily, reducing the chance of lead shaving or spitting with one or two passes.
The tool comes with a high-speed steel cutter and an aluminum handle, with the 3/8" size being suitable for .17 and .22 revolvers.