Hey, just because they have mental problems is no reason to use them for target practice.

I killed my first deer with a .410 and a slug but the shot distance on the small doe was only about 30 yards. So yeah it will kill a deer but I think there are other choices that don't kick any worse that would be better. I don't see many rifled barrel .410's with decent sights on them and accuracy from a smooth barrel with just a front bead sight is pretty poor. I'd even take a rifle firing a pistol cartridge like a 357 mag or a rifle chambered for the 7.62x39 mm over a .410. Both barely kick and the bullets would be of a higher jacketed quality than the simple chunk of lead from the .410.