I find some folks opinions about BW interesting here on SP. Who really cares if the calf's birth weight was 70 lbs. or 150 lbs., I mean really, Carl is happy with the calf and his cow had the calf with no problems so why argue rather he was 88 to 90 or not.
I purchased a bull several years ago that had 105 pound birth weight and bred him to 40 heifers out of that 40 I pulled 1 calf and he had a front leg down. And I weighted everyone of them to see what they weighted, they hit the ground between 92 and 108 lbs.. The calves were long and smooth and problem free. We all breed our cattle as we see fit and to our own standards if we want to breed them to 110 pound birth weight bull we know the consequences and have to except that when we breed them. No one is holding a gun to your head telling you to make that decision. Birth weight is only a factor as we place it in our category of importance and if you want to use a 72 pound birth weight bull that is your decision and if I want to breed to a 110 pound birth weight bull that is mine.
Carl that is a heck of a nice calf, hope you find a great home for him.