- Got A Copper Problem? Hoppe's Bench Rest Copper Cleaner Can Fix It. Shooting Rounds Down Your Barrel Causes Copper Fouling Where The Jacket Of The Bullet Meets The Grooves.
- Hoppes' Cleaner Removes The Residue Restoring Your Barrel Back To Bare Steel. As Copper Builds Up, It Can Change The Velocity Of Your Rounds Causing Issues And Carbon To Build Up.