Ww1 british shell indentification

[zevs]

Hello, I ve got these two shrapnel shells. It seems like 18 pounder/ 84 mm shells. They are both diametr 84mm. But other dimensions are different.
All dimension on the photo

If you have any ideas, please let me know.

Thank you.

 

[Andysarmoury]

they are both 18 pdrs the short one is a Mk XII

 

[ArtilleryManiac1916]

they are both 18 pdrs the short one is a Mk XII

Could you give a scheme?

 

[Andysarmoury]

Could you give a scheme

Basically to reduce cost as they found it would do the same job as the earlier shells

 

[ArtilleryManiac1916]

Basically to reduce cost as they found it would do the same job as the earlier shells

Its understandable , i just need it for the album.