105 & 106 Recoilless rifle cartridges. Any differences?

[Dianaa]

In my restoration of my 106 RCL carrier (Land Rover) I have been trying to acquire 6 of the cardboard cartridge storage tubes for the amunition racks. Unfortunately without success to date.

However I have recently found a source for some 105mm rcl tubes and am wondering what, if any, differences there is size of the rounds and associated storage tubes?

Anyone have experience of these two weapon platforms?