Fill you with brass ? I don’t think they made solid brass bullets or copper bullets right ? Of course it would not sound right ?Have it your own way, but my experience wasn't good.
Anyway, did you ever see an old Western where the good guy said, "Put your hands up or I'll fill you full of brass." Just doesn't sound right does it? ;-).
And a whole lot of dead animals could tell you that a jacketed lead core (real) bullet does the job well. Bonded bullets are even better.