I still have a box: .350 inch for .36-caliber rifle.
Back when I was writing a guns and reloading column, Remington asked me what caliber I wanted.
"thirty-six," I replied, thinking I'd get .375 inch balls.
Wrong!
The lead balls are brass-plated. Purely a gimmick. Looks nice, though.
I still have a box of 100 .350 balls. Never could bring myself to melt them down for the lead.