These four round ended bullets for the 303 Lee-Enfield Rifle are from Amble Beach. Centre is a pointed end 303 bullet in its cartridge case, for comparison. [All fired or inert]
Now the pointed bullet was introduced in 1911*; this fixed some of the ballistic instability of the round end bullet that had given the shooter and rifle a bad name. After this it was onwards and upwards for the Lee-Enfields.
*Many other countries had adopted a pointed bullet earlier, so we were behind the curve on this one)