Found this bullet last Sunday. Can anyone ID this? Never found one like this before. The Diameter is .57, Length is .73, #13 small cavity depth is .14, it has 7 grooves from being fired and the weight is 325.1 gn. Any guesses? The closest I could come to is M&M 271 but it doesn't specify what make. CSA or Union, any help please!
[attachment 13561 113_1370.jpg]
[attachment 13561 113_1370.jpg]