Wartime relic

I glanced down as we navigated the undercliff of Mupe Bay and spotted a 1945 type guilded metal clad steel .303 cal. projectile.  You can tell it's 1945, or after, by the position of the crimp; pre-1945 the crimp would have been lower down the projectile. The bullet was unmarked, I suppose it could've hit something soft, though I think it was more likely a dropped round later set off in a bush fire on the coastal grassland above. I saw lots of examples of that on Godlingston Heath, another wartime training ground, projectile and case often laying less than a meter apart.