Thanks, James!
I'll pursue those lines of enquiry! It would be good to get more info if I can - hubby's mother (Robert's grand-daughter) and her sister are both keen to know anything about him as they only have a few things their mother wrote down from memory before she died.
Even then, when Robert died his wife had died a year earlier in 1917 from a brain tumour, leaving 6 children orphaned!
I know he came from a family involved in the gun trade in Birmingham - pistol finishers and engravers and allied trades, so i suppose it's not surprising he knew how to handle firearms!
Thanks again for your input!
Regards, Stoney