Lead bullets typically have lube of some sort. Ranges from waxy to greasy. Lube may have undesirable characteristics in some situations. Its characteristics change with temperatue, and some lube comes off, and or picks up contamination. Target ammo is pretty much all lubed lead. Copper plated is just cleaner to work with. Might keep your chamber cleaner on a semi auto.
you have a much better chance of wearing out your barrel with improper cleaning than you ever will shooting 22 ammo
Are there any advantages to copper-plated bullets over plain lead bullets?
Thanks in advance.
GL