Why does missile bounce off of target before exploding?

For example, I shoot a missile at a wall, and it bounces off slightly before exploding so the full impact isn't received by the wall! Here is a simple collision script for a missile that was shot by one of my helicopters - Also, I am using BodyVelocity to make the missile fly through the air if that even matters.

part = script.Parent
-- Variables

part.Touched:connect(function(hit)
	ep = Instance.new("Explosion,part)
	ep.Position = part.Position
	ep.Hit:connect(function(HIT)
		if HIT.Name == "BuildBrick" then
			HIT.Velocity = Vector3.new(0,10,0)
			HIT.Anchored = true
			game.Debris:AddItem(HIT,1)
		end
	end)
end)

Your hit velocity probably.