I started this deer season with 3 slugs and killed three deer.

Can't say I remember more than 2 I EVER wounded. One with a bow and 1 with a shotgun but I feel pretty safe saying I haven't wounded more than 3 deer in all my 30 years of deer hunting with every type of weapon.

If yer missing enough to even think about percetages I'd say you've got a real problem to figure out. More time on the range or maybe a better guide or something.