Gregory's ServerI came to comment on the bullet as well, it seems unusual. It's always hard to guess the size of things in photos like this, but the casing appears to be semi-rimmed, suggesting use in an autoloading rifle, and the bullet looks larger than 30 caliber.
Measuring the bullet diameter and case length with a micrometer would really help narrow it down. I'm guessing it's a .35 Remington: