If you take only shots that are within about 50 yards or so, broadside and/or no “obstructions” (i.e. not quartering) in the way and you are proficient with the rifle then I’d say it’s ethical. It’s killed plenty of deer in it’s day and they were most likely as above. Getting the bullet where it needs to be is the key - pretty much no matter the range, caliber and/or size of animal. I have a Winchester 1873 in .32-20 that I’ve taken out for deer but the “right” opportunity had not presented itself and as others have stated it’s about humanely dispatching the animal not “stunt” shooting to brag about how great YOU are.

PennDog