I have killed, butchered and processed a bunch of hamburger cows over the years. We usually process our deer and elk as well. But i always take my steers to a meat processor.
Funny side story-
I had two pigs for sale about 10 years ago, so i put them in a classified ad. A fellow called and wanted them both, provided they could butcher them at my place and then take them home to process. I agreed and they showed up. It was very obvious neither man had any experience, but they finally dispatched both pigs and began the process of cleaning them. 5 hours later, after i got them a tractor to hang the hog off of and a barrel for waste, they had 1 hog done!!!!

The second hog only took 3 hours. It was just about dark when two, bloody, exhausted guys were getting ready to leave and head into the city. Before they left, i asked why they had decided to tackle such a big undertaking? And they still have a bunch of work at home to do. The guy who had called me explained that processing a pig at a butcher was way to expensive, because he had "heard" it was $500.You should of seen their faces when i said my processing fees were $83.00 on the pig i picked up the week before. That included curing the hams and bacon. The second guy threw a fit at his buddy and called him every name in the book. Then he said to me, "Can we haul these two dead pigs to your butcher and have them process them"? He almost cried when i told him that was against the law and they would have to process them themselves. I bet that was a long, quiet ride home that night!!!