I have been waiting for a reply to your post from someone more schooled in old line Polled Hereford genetics than I am, but it appears that your post is going unanswered.
It looks like your bull traces back to some good old Polled Hereford genetics that were popular during their time - John Rice(JR) breeding, 15G, Enforcer, etc.
Since there is no EPDs available for recent ancestors it's impossible to talk about those.
Sorry that I can't be of more help.
George