My current AP1 iron set has a D) swing weight (barley).  I have discovered with my 915 woods & hybrid that a D3 swing weight is ideal for me.

I would like to increase my AP1 swingweight to D3.

If I give you my current specs can you tell me what the swingweight would be for some different shafts.  Specifically, I am considering the Nippon NS Pro 950 Stiff and the UST Mamiya Recoil 95.

My current specs:

712 AP1 irons (5-PW), 2 FL, NS Pro 850GH Stiff shafts @-1/4``, GP New Decade Bl/yellow grips -1/64``

Thank you.