Bronze contamination of stainless steel shot

Hoping someone has the answer to this…

Can tumbling bronze contaminate stainless steel shot? I tumbled a
bronze ring and later tumbled sterling (with fresh water and
abrasive) and it all had a bit of a bronze/goldish hue. Will
tumbling my shot with borax or abrasive powder clean it up?

Thanks for any suggestions.

Jodis Strother