Manville 25MM

Does anyone know. Wikipedia says the Manville guns were made in 12 Bore, 26.5mm and 37MM. Why are the shells marked 25MM?

Manville 25MM

Thanks,
Dan

Because there was a manville 25mm not a 26.5mm.

Thanks Kap! A nice simple answer that explains it!
Dan

Here is a good quick read

2 Likes

Dan, somehow your image does not work.

Thanks, I’ll try this:
Manville 25MM

Dan, thanks! Is there a side view too maybe?

Yes there is, but I didn’t save it. It was in Vic’s auction. I have a fe I’ll picture later, and if I 4get, it will be available when the last auction is archived.
Dan - edit to add pictures.
Manville hs


Knurl
I lightened bottom pic to see knurling.

It appears much like this is a 25mm like the French were using them for flare guns. The composite case is very typical.