Hi Hoochie, and Welcome to Rootschat!!
I think you'd benefit in the first instance by gathering a bit more basic information about him, ie his full name, date of birth, place of birth. Could be there are several men called Beasley in the Berkshires, and you need a bit more.
Also, did he survive the war? Do you have any later references to him?
If he was indeed in the Royal Berkshire Regiment in the Boer War, it would have been the 2nd Battalion (1st Bn wasn't in South Africa).
I'm interested to hear about the ring. Not come across one before. Presumably he had some connection to the town of Windsor?
Neil