The future of rimfire is here. CCI Clean-22 uses an exclusive polymer bullet coating to greatly reduce copper and lead fouling in the barrel without leaving a residue. It also cuts lead buildup in suppressors 60 to 80 percent.The High Velocity loads features a 40-grain round nose lead bullet with geometry that's been optimized for accuracy. With dependable CCI priming and consistent propellant, Clean-22 provides flawless cycling through semi-automatics and all 22 LR firearms.