What copper alloy for turning bullets?

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this is a .509 450gr I did up awhile back for the 50 Alaskan. I didn't expect much or any expansion, but a big blackie never crossed my sights to see for sure.


[ http://i432.photobucket.com/albums/qq47/Al_in_Mi/510brass450grjpg.jpg ]

Probably only a fellow sportsman will tell you, those are beautiful. Little precision works of art....with a dark side.

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Okay, a change in direction. What about resizing a Barnes 300gr .458 45-70 to .451? Would that work using Lee resizing dies? And if so, what are the steps? I've looked through a lot of the old posts on resizing but couldn't find anything specific to solid copper.