C.I.P. Minimum Wall Thickness Recomendations

[Drew Hause]

Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives (C.I.P) http://www.cip-bobp.org/

Shotgun recommended minimum wall thickness p.4
http://www.cip-bobp.org/sites/defaul...e/A-4-1_EN.pdf

Assuming Categorie 1 is Standard Steel, for 12g the MWT numbers are:
Just past the forcing cone/ 4” from breech - .075”
8” - .043”
12” - .030”
16” - .024”
20” - .022”

[Drew Hause]

The actual chart is up

[Eldon Goddard]

1in=25.4mm