For all of you experienced shooters out their what is the major differences between lead vs copper bullets . I know that California banned the use of lead bullets . i Was just wondering if their are any advantages of using copper over lead or guilded metal bullets . I shoot a new sendero 7mm rem mag the farthest kill shots i feel safe taking is 500 yards but hope with time and practice i can extend my range .would it be worth it for me to give copper bullets a try. i hunt primarily mule deer , and elk. any advise will be well appreciated thanks to all.