Seems to me that with the 148gr wadcutter, my load was always 2.5 gr Bullseye. There was a 700X load that worked ok also but don't remember it right off. Got 8# of pistol powder #6 from a friend that died and have been using it with 150gr semi wad cutters. #6 was discontinued years ago.
148gr wadcutters and Bullseye go together like peaches and cream.
Let me start off by saying I am not a farmer.
I am a deer hunter and I do own a tractor and have all of the equipment - but that does not make you a farmer any more than standing in the garage makes you a car - well, you get the picture!
Having said that - and with most of my ineptitude fairly well hidden - I do think that buckwheat is one of the most under rated cover crops out there.
I say cover crop because I see mixed results as it relates to the deer eating the plants.