Are you talking about guessing the weight of a hog? If so I've been close I raise show pigs for years.
I can guess the weight of show pigs within a few pounds every time, but when it comes to the wild ones I still suck at it. I am getting closer these days but I have missed up to 30 pounds both ways before.
I like to weigh the big ones so I dont feel like an idiot when someone calls BS on my guess work.
I've had people that have helped me drag them and load them and still be off over 100 pounds!
Check it out.
http://www.cabelas.com/cabelas/en/templates/links/link.jsp?type=product&cmCat=Related_IPL_226749&id=0039339227925a
