I have a friend with two almost yearling bulls that he just never got around to making them steers. I have never heard it was ever too late to castrate then butcher a bit later but he had some one tell him that the meat would be bad and very tough. I have never allowed a bull to become a bull as soon as the litter feller gets home its off with them so I can not advise them. Bulls like most male animals are a dime a dozen so I dont think he would be able to sell them except at an auction as they are nothing special. I drool when I look at them though, if they where steers I would have already put them in my freezer.