just doesn't seem like a very clean kill
I've never had a problem. And its a hell of a lot better than having to track the damn thing for hours sometimes when you go out with a bow. Sometimes having to call of the search because of darkness, leaving the thing to suffer and roam until death.
Dang right it is not clean. You would have to get very, very close to kill a deer with a shogun. You can do it with fowl due to their size where shotgun damage can kill effectively if you are a good shot.
just doesn't seem like a very clean kill
Using double ought buckshot or a slug is a fine way to take down a deer at close range. I know, I've done it.
A shotgun slug, either rifled or a sabot shot from a rifled barrel (yes a rifled shotgun barrel!) Has ballistics somewhat like the old .50 and .75 caliber rifles and muskets. Lots of venison got put on the table by those. A slug carries alot of energy, sloww but heavy and it doesn't overpentrate. It'll drop a deer at least as well as a rifle bullet, at an appropriate range of course.