Leather Containers. Cordite Carriers? Please help.

[Andy Naude]

What are these ? And could they be cordite carriers?

270 mm x 100 mm.

I could find no markings any where.

 

[AE501]

They look like a variation on the Clarkson case and other charge carriers used by RN.
British ones usually had a calibre marked on them. The navy had the same calibre, although the gun may change, for a hundred years or more.
The cases never wore out and were used with BL charges when naval guns were being served and in RNADs. A popular calibre was 4.5".
Pictures of some can be found towards the back of BR 932, which is in downloads