The copper-washed bullets are generally a little cleaner (especially to handle.) But I think the lead residue has more to do with the shape of the bullet, it's fit into the case, the lubrication, the contour of the gun's loading ramp, the angle the magazine feeds, etc.
Dirty bullets, I think, are caused more by the powder and primer. I've found Remington Target and Winchester Wildcat to be far dirtier than anything else I've tried.
You will always get some lead residue in the chamber area. It's no big deal. Use a toothpick or brush to clean it off. The main thing is to use a cartridge that functions well in the gun. Some rimfires are pretty picky about this.
Ok that's what I thought. Makes sense.


















































