Nope. It's a rimless. 7.92mm x 57mm ("8mm Mauser") from Poland. DZ - the supplier code (Dziedzice Walcownia Merali)- 67 (67% copper in the case), 1932. Should be a "Pk" (Pocisk - "projectile", their equivalent of "ball" ammo) on the headstamp as well.
Further research shows it was fired from a BREN light machine gun - made under license pre-war in Poland or supplied to commandos based in England. Distinctive oblong firing pin nose. First image is Polish commandos training in Scotland (no magazine in the gun). In 8mm it has a straight magazine instead of the curved .303 British version.