Randall McCoy is
NUTS.
I'm not sure if the show is completely accurate as I don't know every detail of the feud, but damn Randall McCoy definitely didn't fully return from the war. He sure seems like an impossible person to get along with.
I've only seen the first episode so far but I don't expect he will change. Especially after seeing him going schiZo about Roseanna.
By the way big thumbs up on this series.