Unknown 25mm or 1-inch head

[Depotman]

I recentlybought a collection of British 1-inch machine-gun and aiming rifle ammunitionand found an ‘oddball’ head in with the ‘standard’ items. I don’t recognise it from the documents Ihave and wonder anyone can identify it? It’s approx. 25mm dia x 66mm long and pictures are attached. Depotman.

 

[ron3350]

I also have this projectile with the base cut-out plus another similar with a flat base.
I also have no reference and was going to put mine on the forum also. These do not match the reference in P.Labbett's book on page 143. Wrong weight and base.

 

[MINENAZ16]

Hello,
I know this shot as Italian 25mm Perforante (for Nordenfelt guns)
Regards

 

[ron3350]

My two projectiles. Obviously two variations or the base was not trimmed?
The flat base is 204 grams (7.2oz or 3148 grains). Overall length is 66.2mm.
The cut-out base is 202 grams (7.1oz or 3117 grains). Overall length is 67.4mm. A bit longer below the driving band.
Photo in Labbet p.143 is the same approx weight.
I am happy to call it Italian as MINENAZ16 said. I have not seen an Italian 25mm case or headstamp. Any photos ?

 

[Depotman]

Hello,
I know this shot as Italian 25mm Perforante (for Nordenfelt guns)
Regards

Thank-you very much - do you have any information on the date of introduction and how long it was in service? Depotman

 

[MINENAZ16]

Thank-you very much - do you have any information on the date of introduction and how long it was in service? Depotman

Sorry, no more details, I'm sure member Fert could help.