Question! If I shoot 50 rounds of unplated, bare lead .22LR ammo through a pistol and then follow it with 50 rounds of copper plated/jacketed ammo, will the copper rounds scrub out the lead fouling? Chore Boy or no Chore Boy, I just can't get my pistols clean after shooting bare lead ammo. The black fouling just keeps coming out, patch after patch, no matter how many times I brush scrub the bore with Hoppe's No. 9 or similar. I figure it must be lead. Any thoughts on the strategy of following the lead rounds with copper jacketed?