AAHHH! I can't believe that I didn't catch that, I reworked the entire problem for hours and couldn't find a way to get .557s, which was apparently the answer, but that was my mistake every single time. The correct mass is .992kg, I feel like such an idiot, thank you so much for the help!
So I've been working on this problem for a while and can't seem to come up with anything and I don't really understand why I'm wrong in what I did. I could just get the answer online, but I actually want to understand what's happening.
Homework Statement
A rifle bullet with mass 8.12g and...