Hoping to identify what I assume would be described as a 10.75x52R. I have found reference to a “Roth Hunting” version of this designation, but dimensions indicate a noticeable bottleneck. This cartridge has a straight taper case with a blunt round nose Ni jacketed hollow point (looks drilled rather than swaged) magnetic bullet which if quickly glanced at looks like a 45-70-500.
Primer: Flat Cu w/ purple anulus sealer
Bullet Dia. .423"
Neck Dia. .452"
Base Dia. .485"
Rim Dia. .541"
Case Lgth. 2.047"
Rim Thck. .043"
Thanks for any info that can be provided.