Were I in your situation I believe I would set the scope where the cross hairs are centered between the tow groups, accept the 4" grouping you mentioned. Reason being you will always know the right and left barrels are going to shoot to their respective side. I believe for me it would be easier to remember to hold 2 inches left for the right barrel, or vice/versa, if I found need for a bit more precision...but that's just me.
Now, if the rifle were mine I'd be working up a proper load.
Last edited by sharps4590; 10/26/15 05:10 PM.
