Hi Joe,
I agree. With respect to personal guns, unless an officer was a wealthy land owner in Britain or well connected, he likely would never have the opportunity to hunt big game and maybe limited chances to hunt upland game or waterfowl. However, while serving in America and perhaps, India, those opportunities would have existed. Because we focus so much on battles and campaigns, we forget that there was a lot of down time while on garrison duty, between campaigns, and during winter and Spring. Officers probably took advantage of an abundance and diversity of hunting opportunities in NA and India. They might use their service arms but I suspect quite a few brought over personal hunting guns particularly if they had been hunters in Britain.
dave