Just a word of caution here at this weight stage. If you try and push him up to 3# grain at this point in his life --he MAY burn out too soon and just flat quit eating when you need to be at his best.
Here, and not saying I have done it right, I GROW them at about 2# grain a day, on 2 feedings, wit hfree choice grass hay untill they weight 800. Then all bets are off, and you can go up to the 3# grain slowly in little additions over a week or two time.
I am saying this for your benefit, if you burn em uptoo soon, you will have the chance of causing liver absceses as well, and then they will shut down. Keep lots of fiber inthem at this point -- a 3lb per day gain now is certanly adequate. I know you have something like 165 days to get there in mid July, but a straight Angus will get over fat early --
As far as fat goes, we feed High Noon Feeds for everything from the hfrs growing ration to warm up and finish on the steers. They have a very unique mix, lots of cotton seed hulls and a special high fat molassis mix that is second to none. They also keep the grain at a course texture -- VERY important there -- they use roasted corn, and it is not ground -- but just pressed enough to crack the shell -- it is whole kernel out of the bag! A course grind will stimulate rumen action and not make them sour. I have never had one get loose or scour on thier feed ever.
These are just tips -- I am no proffesional show guy, but have learned alot in 30 some years. Keep the rumen happy, and they will gain like crazy --if they get sour --it's over!
Any way -- good luck on your steer --sounds like you really like what you do and are excited!! Keep that thought !! hehe
Terry