This of course will lower the ballistic Coefficient of the round making it less accurate and shorter ranged.
Not to mention the cost enhancement.
I think what the military is doing is a mistake, and a waste of copper, but the Barnes bullets I use for hunting give up nothing to lead. The Triple Shocks, with the three recessed rings, get better velocity with lighter loads than conventional lead bullets. I also use lighter grain weights with the copper bullets to avoid over penetration, and to get good expansion. That probably wouldn’t be a consideration for military purposes.
No, it makes it quite a bit more accurate. Using a bullet core that is essentially the same density as the jacket negates the consequences of jacket sidewall variations in thickness. Dr. Mann's "X-Factor" is thereby eliminated.
“This of course will lower the ballistic Coefficient of the round making it less accurate and shorter ranged.”
I was just wondering about that. Thanks for answering the question. And copper isn’t going to do wonders for the environment either, but I’m sure we could spend lots of money studying it.