Interesting Raimey. Thank you.

I also cast the smoothbore. Measurements indicated 24ga, not 20 as I had thought. 60mm long chamber. Bore is 0.594" or 15mm. Case is 0.660" as the base and rim cut for chamber is 0.722".

Pics below of my casts. I'm not good at that and I need to buy better calipers. First is shotgun. Next 3 are rifle.

[Linked Image from up.picr.de]

[Linked Image from up.picr.de]

[Linked Image from up.picr.de]

[Linked Image from up.picr.de]