Please help ID


I bought this as a 43 Spanish shot cartridge, the only thing correct is that it is a shot cartridge. Here are the dim.
RIM .675
Under rim .570
Shoulder .520
Neck dia .480
Case length to shoulder 1.490
Case length not including formed bullet 2.070
Overall 2.415
Formed bullet dia. .458
Thank You for any help Carolyn


Carolyn, this is a Dutch 11 mm Beaumont (11.3x51R) shot loading. Regards, Fede.