i could probably tell you what it is,there any markings or stamps?

old rifles for hunting, 300 yards is ok, thats a carbine though, martini .303 carbines if you get a good one with enfield instead of metford rifling are a nice rifle, your spoiling him with a scope you know, but its all good,
for a long barreled rifle there is a wide range but a good one you should be picking up at 500 yards though thats a bit excessive for deer, carbines probably the best choice, i wouldnt object to my gf buying me old rifles as long as they were legitimate.
practical things do make good presents.