6.5 imperial

I have a round headstamped, IMPERIAL 6.5 M Sch is this the Imperial of Canada that was ?, I thought that they only made the larger Magnum calibers if so did they make any other metric calibers ?, if not Imperial of Canada, who are they . many thanks Randy

Imperial ( Imperial chemical industries) continued the Dominion production ( Imperial was first used by Dominion for their shotshells).

They loaded other metric rifle cartridges like the 6.5 x 55, 7 x 57 and 8 x 57 J

Imperial was the headstamp of which succeeded DOMINION hs on cf ammo made by the ammo division of Canadian Industries Ltd which was owned by ICI. CIL made a wide range of ammo.