I've been using bore tech for years and sweets 7.62 before bore tech was released. I have no reason to try anything else over the bore tech carbon remover. I haven't found anything better than their copper remover either but I've never used JB bore paste. For those of you who have used both... How does the use of JB bore paste compare to bore tech copper remover. Is there situations where it would be necessary/beneficial or save time to used both?