unidentified projectile

[smle2009]

Morning to all,
I have this projectile,that at the time I got it,was told it was a 20mm practice Hispano.
The problem that I have with this is that it has a diameter of 18mm,even the simple test of putting it in a case results in it fitting like a dogs willy in a dustbin!(other hispano projs I have fit snug in said case).
Overall lenght is 82mm,has a copper drive band and is marked with BHM 259,the khaki paint(which looks original to me) I believe to be the colour code for early practice rounds?
Photographed with other 20mm Hispano projectiles and a 20mm MG 151/20 round.
Any help with this id would be muchly appreciated.

Cheers
Tony

 

[Chris 42 RQ]

Oerlikon Practice.

If we are talking about the first picture projectile then it is in fact a 20mm Oerlikon as the base is a smaller diameter below the driving band.
Grey was also the "practice" colour of the day.

 

[SG500]

Just to add to what Chris has written, the driving bands are usually narrower on the Oerlikon than on the Hispano.
Dave.

 

[smle2009]

Many thanks Chris,thats solved that one for me.

All the best
Tony

 

[smle2009]

Thanks Dave,this one certainly is.
Cheers
Tony