If it's a melee item, then touch is enough no need to do a target
unless your talking about spells only. If it's a spell then you want it
on target unless it's a buff increase spell.
I would also consider a weakness to fire on that item, cut down on the
distance as its not really wanted. Increasing the magnitude, decreasing
the distance, making a weakness to fire will also help. You might find
that your item eats mana, and would require a lot of recharging.
>> Stay informed about: Enchanted Weap: Target or Touch