>Please support your contention with facts.
You obviously have no feel for bullet or metal prices.
Copper is 3.6 times as expensive as lead by weight.
Copper has 79% of the density of lead.
So say we want to make a bullet made purely of the respective metals. The lead bullet, due to density, will require about 26% more metal by weight.
Thus if we compensate for the density difference, copper is still 2.85 times as expensive for making bullets.
in comparison, how does copper respond to impact?
You forgot the extra wear and erosion and deposit rates on the rifled barrel from copper bullets compared to lead.
Commercially, copper is REQUIRED for hundreds more uses than lead, thus demanding copper be used in bullets wastes this valuable resource in ways it cannot be readily recycled.
Demanding copper is a typical liberal/socialist/communist/democrat “feel-good” way to “hate guns, gods, and goods”