Chamber cast will tell for sure

https://militarycartridges.com/category/148-11mm-austrian-werndl/

SEE RIGHT on the above for a cartridge listing


https://forum.cartridgecollectors.org/t/11-3x50r-11x52r-dutch-beaumont-cartridges/6702

Fun reading

Mike
p.s. what fun if 50-70 smile

p.s.s. These 20 gauge 2.5 inch hulls might be good for you cape gun
https://www.grafs.com/catalog/product/productId/11078

Last edited by skeettx; 05/18/21 09:13 PM.