Unknown training rounds

[kradman]

Picked up these also today , there is nothing marked on them , has anyone any idea on what they used with ? thank you for any help

[Sarge]

A WAG - from the size I'd say ruskie, 11.7 or 12.5.
Sarge

[lithgow]

Rimmed rounds aren't Soviet/Russian for heavy calibre stuff-the general shape of the projectile end says A/T to me-possibly something like a Boys .55" A/T rifle sort of thing but the complete lack of markings is a puzzle unless they're home made/trench art things.

edit-Nearest thing looks to be the 13.2 x 92mm SR for the Mauser 1918 A/T rifle but again, only a rough approximation of it.

[kradman]

These were found in with some British ww1 items so the Mauser A/T rounds make sense , thank you