As says Minenaz16, visit here : http://www.guerredesgaz.fr/Agression/artillerie/francaise/Munitions/Munitions.htm , you will find all the answers.OK - I didn't expect that. Mine weighs approx 36.5kg is that consistent with your projectile. Is that your projectile in the picture.
So what is the adapter I am looking for - what dimensions please 40/55 ? Is that correct ?
Cheers
Nathan