Just curious on what the advantage, or disadvantage, would be in on the two on a handgun pistol cartridge used for primarily for SD. Specifically, most premium rounds like Speer Gold Dots, Winchester Rangers, Federal HST's, Hornady TAP, and a bunch of others use copper.........but the Remington Golden Saber uses a brass jacket. I'm no metallurgist, other than knowing that brass is an alloy of copper+zinc in some ratio. The guy that designed the Golden Saber for Remington, Dave Schluckbier, previously worked at Winchester, and in tandem with Alan Corzine, who at least then was the VP of R&D at Winchester, they designed the now defunct Black Talon, which had a copper jacket. Not sure if this was just a marketing thing or copyright thing or what. I plan on doing my own "ballistic testing" in the spring on most of the above mentioned rounds, but am curious if anyone knowledgeable about the subject could shed some light on it for me beforehand. Thanks!