My 14 year old son hunts squirrel. He has a New England Firearms 410. He wants a deer rifle. We live in the mountains of Tennessee with very little chance for a long shot. He is looking to get a 12 ga. shotgun. What would be the best shotgun for hunting squirrels and shooting slugs. What barrel type. I like the safety features of the New England Firearm shotguns.Any help you can give me would be appreciatedT. Prince