I have some T7 in 2F and a TC new englander 12ga with screw in chokes,Iam wanting to work up a load for turkeys I was wanting to use the T7 and ox yoke felt wads and number five shot. But have no idea what a good starting point would be because the T7 is stronger, I did not know if you can get good patterns with it you can not go by the volume to volume starting point with it or is it a no-no to use this in a modern black powder shotgun I wish someone here in illinois sold the new black mag powder. Hate to pay the shipping on it from cabelas. Thanks for any help on the load recommendations.